Thermostat bypass car. So you can test cooling, heating or testing by bypassing.

Thermostat bypass car Thermostat Bypass Pipe 2 days ago · GM CODE 97086694. Some engines are equipped with bypass hoses, while others have a bypass passage that forms a part of the cooling jacket in the engine. 2014-2017. To bypass a thermostat for fan, put a jumper between the G and R wire. This Should get your car from Room Temp to 180 in about 4. Sedan, 2. 6. The KTM XC two-stroke does not run a thermostat since it’s designed for high flow, so the main benefit of the bypass hose kits (basically, eliminating the thermostat kit) is to increase the flow and reduce the engine temps. Thermostat gasket not sold separately; TT432-192P: Thermostat: Opening Temp: 89°C ; Flange Dia: - Foot Dia: 30mm ; Height: 48. Order Replacement 1982 Lincoln Town Car Exhaust Pipe and Flange Gasket. It is the direct precursor of the sleeve bypass thermostat used in British cars of the 50's and 60's. Royal Aug 23, 2014 · My car cooling system is pretty good, unless it's a really hot and humid day and I end up stuck in traffic it need goes over 190. Apr 19, 2003 · The bypass has the added function of moving the block-heated water past the thermostat which will open if necessary. $19. The smaller thermostat bypass valve is open and the coolant circulates through the bypass tube within the engine and through the vehicle's heating system. I've watched the car care nut's videos and have a pretty good grasp. While the most convenient way to determine whether an HVAC thermostat is faulty or not is to test it with a multimeter, if you don't have one on hand you can also simply bypass the thermostat by twisting two of the thermostat wires together. Apr 20, 2005 · Happens with ANY thermostat- quick opening or otherwise. when it reaches the Oct 11, 2002 · Car is running good now; before, it was overcooling in cold weather and starting overheating yesterday; lower hose (inlet side thermostat) was ice cold - old stat was sticking closed. This thermostat incorporated a secondary sleeve which closed the bypass as the main poppet opened. Jun 27, 2022 · In this article, I’ll explain how to bypass a thermostat in a car, and why it’s important to do it properly. Jan 8, 2025 · Jesse's bypass will work good for you,especially if you tow upwards of 5500lbs. However, the open bypass was not designed to limit flow when the thermostat was open. It's a genuine General Motors part with an OEM part number 55559351, and Opel\Vauxhall kat-code: 13 38 355. This type of thermostat does not have any sleeve to block the bypass slot when the thermostat opens. 5L. AN 16 . ZF reconmends servicing the 8 speed between 50,000 and 80,000 miles or every 8 years,if you're towing 5500 lbs fairly often in Florida's heat,you'd probably want to service the 3. Locate the thermostat housing on your engine block. Then, take out the thermostat housing cover and remove the old thermostat. This can be done by following one of the two large hoses -- one on top, the other on the bottom -- on your radiator. These threaded ports can also be used for installing aftermarket or factory temperature sensors, or for as simply bleeding air out of the cooling system. grin2::grin2 I installed a 55GPM electric pump on my car that has no heater hose inlet or manifold bypass hose inlet. 2016-18. A thermostat is a valve that controls the flow of coolant in and out of the engine based on its temperature. Quicker Engine Warm-Up Dec 31, 2022 · I wouldn't. Jan 2, 2011 · Stewart further modifies its thermostat by machining three 3/16" bypass holes directly in the poppet valve, which allows some coolant to bypass the thermostat even when closed. The idea is the heads absorb the most heat during normal running and by constantly recirculating the coolant it allows the coolant to achieve one homogeneous temperature in the block of which the thermostat samples The heater bypass tube allows a small amount of coolant to circulate throughout your car engine when the thermostat is closed. Houses the thermostat and allows connection between the radiator hose and the engine This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations . said he has done several of the 6r80 trans. We provide a step-by-step guide for safe bypassing, troubleshooting tips, and alternatives for repairing or upgrading your Engine Coolant Thermostat Bypass Pipe - Part Number CH2901 by Motorad. A significant amount (some say 25% or more) of the hot coolant gets looped directly back into the water pump and into the engine. So you can test cooling, heating or testing by bypassing. Thermostat Without Bypass Valve. Thermostat Bypass Pipe Jan 5, 2025 · About this 55559351 Hose, thermostat bypass. Benefits of Removing a Car Thermostat. If you choose to block the coolant bypass next to cylinder #4, you will need to remove and drill six 1/8” holes around the thermostat circumference. The thermostat is a relatively inexpensive part, but if it is not replaced regularly it can lead to a number of issues, including engine damage due to overheating or running too cold. Order now! The bypass in this early Cadillac comprised a small tube leading from the carburetor water jacket to the pump inlet. 2. Motorad® Purpose/Function: The purpose of the thermostat in the engine cooling system is as follows:-1] To reach the optimum temperature faster: At the optimum temperature, the engine burns fuel efficiently thus providing better fuel economy and lowered emissions. July 11, 2024 8:14 pm Gates 33339 OE Type Engine Coolant Thermostat Dorman OE Solutions Thermostat Bypass Pipe - 902-901. The thermostat helps control the engine’s temperature, but in certain situations, taking it out might be helpful. Removing a car thermostat isn’t common, but some people do it for specific reasons. This was sufficient to provide some circulation when the thermostat was closed, the clear intent being to encourage fuel vaporization. Jul 21, 2008 · unless you have an electric water pump and a realy big efficient radiator, don't remove the thermostat. Nov 9, 2024 · The OE thermostat block looks alot like the aftermarket "bypass" blocks. Let’s look at some possible benefits of removing a car thermostat. When the thermostat opens, the coolant will now tend to flow through the radiator since the thermostat opening and upper radiator hose are bigger than the bypass hose. Refer to Brian Heil's first comment above regarding the requirement for coolant bypass. Bypass Pipe to Water Pump Housing. Sort By: ACDelco Thermostat Bypass Pipe - 12679317. Coupe, 2. Try Jesse's bypass first before you dive into any other mods. How To Bypass A Thermostat For Cooling Or Heating 2. Ford Car Thermostat Bypass Hose - 8 Cyl. If the o-ring or gasket wear out or tear, coolant will begin to leak from the bypass tube. For the good of the Free World, DEMAND COMPENSATION FROM CHINA for their release of the Virus Originating in the Wuhan Laboratory. Feb 28, 2010 · With a stock thermostat (no bypass) during warmup there is no coolant passing from radiator to engine. How is your cooling system setup? What type radiator, are you running a shroud, a belt driven clutch fan, electric fan, what thermostat? Thermostat Bypass Pipe Seal; GM Genuine Parts Thermostat Bypass Pipe Seals are designed, engineered and tested to rigorous standards and are backed by General Motors. But I could certainly believe that someone, perhaps even the dealer, installed an sleeved 160 thermostat to make the engine run cooler. OPEL CORSA BC ASTRA F. If you don’t have Rh, use the R wire instead. Yup sounds good, get a fitting to tap into the pump and attach the line to the thermostat housing. 0 Change. Evans. 1 - 1 of 1 results for Thermostat Bypass Pipe Seal Filter/Refine. I have a 2017 1500 with the 8L90E and have the Superior Solutions bypass installed. This allows the engine to warm up faster. Jan 19, 2023 · If any component of your HVAC system is not coming on, you could have a faulty thermostat. Shop for ACDelco Coolant Bypass Pipe 12558968 with confidence at AutoZone. Visit CARiD and choose ACDelco products if you're looking for highly-efficient car batteries, spark plugs, air filters, wiper blades, and other repair parts. My only question is in regards to the atf thermostat bypass. Buy online for free next day delivery or same day pickup at a store near you. I deleted the oem can am thermostat bypass and used the two pieces in the pictures. THERMOSTAT BYPASS PIPE. This influential design was adopted by most US manufacturers, and was used into the early 1950's. Oct 5, 2014 · Then tried a Stant 180 degree thermostat and car temp holds right at 180 unless outside temp is in the 90's, then it might climb to 185-190. That would allow the sealer to flow easily and then once you are finished replace it with the one on it or a new OEM unit if it seems the sealer worked. Free 60-Day Returns. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type 1 - 1 of 1 results for Thermostat Bypass Pipe Filter/Refine. That port on the pump is where the pump draws in coolant, at the thermostat is where it will get sucked through, that way your recirculating warm coolant at the top of the engine, down into the water jackets and to the back of the engine where the coolant will be cooler. Thanks for the input so far fellas, I'll report back after a few days if anything abnormal occurs! Jul 21, 2008 · unless you have an electric water pump and a realy big efficient radiator, don't remove the thermostat. Shop for the best Thermostat Bypass Pipe Seal for your 2014 Chevrolet Cruze, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. . If you do not do this the car will overheat. Jan 8, 2016 · One symptom of an issue with heater bypass tube is a coolant smell from the engine bay. 1. Part #: 24445723 Line: ACD. 30 8072 903 Thermostat Bypass Pipe. Apr 13, 2019 · Back in the day, the top shelf thermostat was an all brass 180 degree Robert Shaw unit. This hose 100% fits for Opel About this 55559575 Hose, thermostat bypass This part is a hose, thermostat bypass for Opel, and Vauxhall cars. 1L, 6 Dec 12, 2014 · You may indeed have an air pocket and those bypass hoses are essential for two reasons. Without it, you would get hot and cold spots in the engine until the thermostat opened. We have the best Thermostat Bypass Pipe Seal for the right price. To bypass the thermostat on a car, you need to locate the cooling system’s water pump and then disconnect it from the engine. Mar 16, 2014 · "Note: Blocking the thermostat bypass and will stop the thermostat from opening, as the wax pellet never receives any hot water. Jun 3, 2019 · How does the thermostat in a car's cooling system work? Any liquid-cooled car engine has a small device called the thermostat that sits between the engine an Jun 3, 2019 · How does the thermostat in a car's cooling system work? Any liquid-cooled car engine has a small device called the thermostat that sits between the engine an Thermostat Bypass Pipe Seal; GM Genuine Parts are designed, engineered and tested to rigorous standards and are backed by General Motors. Jul 31, 2024 · +1, the short bypass hose (next to the thermostat in the diagram) serves the warmup circulation requirements. 0L turbo. In this photo the red wire is always hot (120V), the black is neutral and the 2 blue wires are hot (120V) when the heater is activated by the internal electronics. 7L to 6. Redline. Product Features: Direct replacement - this thermostat bypass pipe is designed to match the fit and function of the original pipe on specified applications. Sep 25, 2021 · The regular "bypass" hose just allows coolant to be constantly recirculated within the block, it does not bypass the thermostat. It's most likely related to the thermostat because this started exactly after I changed the water neck gasket. it works, and it keeps my truck cooler Jul 13, 2009 · hi wingman. July 11, 2024 8:14 pm Gates 33339 OE Type Engine Coolant Thermostat GM Original Equipment™ Engine Coolant Thermostat Bypass Pipe by ACDelco®. and did not apply any silicone around the thermostat. if your running up around 230 in with your bigblock. OPEL CODE 1337233. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Part #: 12593217 Line: ACD. Heater works the same waythats so you get heat in the car before thermostat opens and radiator warms up. Check out TSB T-65-12, which talks about an alternate "pellet type" (so unsleeved since all the sleeved ones were aneroid) thermostat, 82C, for the TR4. This part is a hose, thermostat bypass for Opel, and Vauxhall cars. Regal. Is your car's AC acting up, turning on and off randomly, and leaving you sweltering in the heat? In this video, we'll show you how to diagnose and solve the This thermostat bypass pipe is designed to match the fit and function of the original pipe on specified applications, and is engineered for reliable performance and durability. 74. Part #: 12679317 Line: ACD. Oct 26, 2020 · On that car I would be very tempted to buy a cheap aftermarket thermostat and gut it by pressing the ears down and removing the capsule and valves discs for that use. Save on Thermostat Bypass Pipe Gasket at Advance Auto Parts. May 22, 2013 · By the 80s the 3-way thermostat was reasonably common except the sleeve was replaced by a disc on the bottom of the wax capsule. Most car makes and models that cut heater flow use a vacuum or cable-operated shutoff valve inline. I first ran into this on my 235 in-line 6 in my '53 Chevy pickup. This modification does result in the engine taking slightly longer to reach operating temperature in cold weather, but it allows the thermostat to function properly when We have the best Thermostat Bypass Pipe for the right price. Is this correct? May 29, 2015 · Don't screw with the factory bypass, don't drill the thermostat. i had every trans maintenence done before hand and still had problems so i said go for it. 221 6 cylinder, 260, 289 and 302 8 cylinder, Water by-pass hose. Check Vehicle 1 - 1 of 1 results for Thermostat Bypass Pipe Filter/Refine. This might cause your engine to operate less efficiently, but it still will allow you to drive the car without risking engine damage. 6L. It acts as a valve to keep coolant in the radiator long enough for the radiator to remove the heat. Below is a bypass (3 way) thermostat shown upside down on the right. Aug 31, 2015 · 1. From overheating to low engine performance, a car thermostat that is stuck can cause serious problems. Jul 12, 2011 · I also believe the original thermostat was a 180F unit. Get yours online today and pick up in store. Buy online In this Video, I explained about an important thing I found out that took us 6 Months scratching our heads. I average 30 to 40 degrees above ambient temperature. By-pass tube. Sort By: ACDelco Thermostat Bypass Pipe - 12565082. Thanks for the input so far fellas, I'll report back after a few days if anything abnormal occurs! Save more on an aftermarket Chevrolet Thermostat Bypass Pipe with CarParts. Aug 15, 2017 · So I have gotten a few questions from people regarding this picture. Learn about common thermostat issues and gain insight into different types, from mechanical to smart. Available in Parts Department at www. Does anyone know the purpose of the bypass valve on the thermostat? The thermostat is the same size as a small block chevy's except for the bypass valve. The bypass hose allows coolant to circulate before the thermostat opens. Color: Oct 2, 2022 · Thermostat is closed: When the engine is started cold, the thermostat (the main valve) is closed; there is no flow through the radiator. Jul 11, 2023 · Car Thermostat Type. May 16, 2009 · The bypass is used to recirculate water from the water pump when the engine is cold and the thermostat is not open. As the thermostat opens near full, the disc is pressed over the bypass port which is directly below the thermostat. for 3 years my trans was overheating very easily. What name is on it? I'm not convinced that a transmission running at 170-180 F (properly working thermostat) is anything less than ideal. I installed the Superior STL-010 last week along with a fluid & filter change and seeping cooler line repair. I see a precut hole in the plastic guard underneath the car near the radiator with what appears to be the bypass valve. Sort By: ACDelco Thermostat Bypass Pipe Seal - 24445723. Thermostat Temperature: 195 Degree Fahrenheit; Includes Seal; OE Specified Temperature Limited Lifetime Warranty Bypass Flange Diameter (in): 15/16 Inch 1 - 9 of 9 results for Thermostat Bypass Pipe Seal Compare Filter/Refine. coolant from the WP to the top end to prevent hot spots, and the other hose to the thermostat housing allows a small amount of coolant to circulate through the upper hose to the radiator during engine warm-up when the thermostat is closed. Also, the bypass feeds coolant into the thermostat housing. It did allow some flow via the header tank to allow the thermostat to work from cold. Bypass is a closed loop with coolant flowing in engine only until the thermostat opens and introduces cooled coolant from radiator. The big round aluminum thing with the brass elbow out one end is the new inline thermostat housing. Jun 27, 2022 · The thermostat in a car should be replaced every 30,000 to 50,000 miles, or every two to three years, depending on the make and model of the car. Fan works real good, radiator is clean. 6L, 2015-16. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety Nov 18, 2015 · What I would like to do is bypass the electronics so when the heater gets power it's immediately active. And yes the 1500's use engine coolant to heat the transmission fluid. , released (intentionally or negligently) into the world in 2019 (VOWL-19) Ten trillion to start with, increasing as needed from there. This may produce a coolant smell from the vehicle’s engine bay. one of the trans shop suggested to do this. Mine runs same temp towing, unloaded, summer, winter, mountains, flats. Parts are just part of what we do. May 31, 2010 · Unless you are running a high compression, boosted, type engine, you shouldn't be having cooling issues and should have no reason to not use the bypass hose, nor should you have to drill the thermostat. Firstly, the hose to the lower intake circulates lower temp. Thermostat Bypass Pipe Seal; GM Genuine Parts Thermostat Bypass Pipe Seals are designed, engineered and tested to rigorous standards and are backed by General Motors. the purpose of a thermostat is to hold the coolant in the motor till it gets to operating temperture then to open and restrict the flow of the coolant to hold it in the rad longer so it has a chance to shed heat through the fins to air. That's why they install the bypass at the factory. Thermostat Bypass Plug Fit for GM 6L80 6L90 8L90 With O-rings, CNC Machined Aluminum Transmission Cooler Bypass Plug. Nov 28, 2024 · Struggling with a malfunctioning thermostat this winter? Our article offers practical tips on how to bypass your furnace's thermostat for a quick, temporary fix. IMPALA, LS, LT, LUMINA, POLICE CAR, SS: 1995-2001 Chevrolet Lumina: 6 Cyl 3. The thermostat housing will connect to the coolant hose and is bolted to your vehicle's engine block. Here are 5 easy steps to follow What you could do is keep the original thermostat core and if you ever need to make a warranty claim on your transmission, just take out the bypass and put the original core back in. 888-577-6964; Shopping Jun 24, 2023 · To bypass a thermostat for heating in troubleshooting, put a jumper between W wire and the Rh. add a bottle of water wetter to help make the fluid conduct heat better. Some vehicles come with bypass port hoses coming off of the factory thermostat housing, we do have housings with threaded fitments for fitting threaded hose barbs for bypass lines. AN 20 . Jul 12, 2022 · Locking the valve in the 'non-bypass' position still allows sufficient bypass for proper thermostat regulation via the 1/4" diameter equivalent area around the circumference of the bypass valve. Thermostat gasket included. The thermostat is connected to the lower radiator hose and the upper hose is unrestricted. The thermostat has a bypass valve that is attached to the bottom. What are the differences between the two? Here is the full explanation. 0000lbs. Popular GMC Parts. How is your cooling system setup? What type radiator, are you running a shroud, a belt driven clutch fan, electric fan, what thermostat? The most basic type of thermostat is a bypass valve thermostat. When not using the bypass buy a thermostat with three 3/16" holes(or drill them yourself) in it's housing which will allow water to flow and not build up pressure. May 30, 2024 · The $80 transmission Thermostat Bypass Valve that replaces the troublesome transmission thermostat is in my opinion the best bang for the buck investment on my vehicle. Part #: 12565082 Line: ACD. the thermostat opens and allows the cooled coolant to enter the engine. Car has a Walker radiator and Cooling Components electric fan/shroud that seldom runs as long as the car is moving. nobody could pinpoint the problem. Based on the type, the car thermostat is divided into two, namely without a bypass valve and with a bypass valve. Thermostat DIY - How to Mod Bypass Car Thermostat Engine Cooling System Overheating - Heat Test ResultNOTE: This is done for " Cooling the Engine " and it will consume May 2, 2019 · It is possible to replace the thermostat with a restrictor ring which provides an obstruction in the cooling system of similar dimensions to a fully open thermostat but this is usually only done in competition vehicles, in a road car a functioning thermostat is usually a must. Come in. Jan 8, 2019 · i have this done on my gen 1. the hot coolant from the engine now is replaced with the cooled coolant from the radiator. It fits for Opel Astra-H, and Zafira-B, Vauxhall Astra, and Zafira for Europe, and the UK. That keeps the temperature distribution throughout the engine more or less constant. 4L Swap - Post #72 Normal ZF transmission operating temp - Post #6 Jun 27, 2022 · In this article, I’ll explain how to bypass a thermostat in a car, and why it’s important to do it properly. Once the thermostat opens, the water tends to follow the path of least resistance, so although you'll still get some flow through the 'bypass' line, the majority will flow out the thermostat housing into the radiator. 10% off coupon applied Save 10% Thermostat Bypass Pipe for $36. Most people drill a 3mm hole in the flange of the thermostat to achieve the same effect. Aug 14, 2023 · Arts Thermostat Bypass system . Path of least resistance, same as electrical current. When the engine is cold, the wax is solid; as it expands, the sensing element slides, opening a valve and allowing coolant to flow to the radiator. 5mm ; Bypass style thermostat integrated into housing with inverse jiggle pin, 3 bolt holes. SKU: 97371074 Other Names: Engine Coolant Bypass Pipe Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type May 18, 2022 · That is not a bypass as such it was an air bleed to the header tank in a sierra. com CAR ID. Shop for the best Thermostat for your 2007 Toyota Camry, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. 5L, to pipe. Limited Lifetime Warranty. Part No: URP308072903 ( Review) $23. The heater is irrelevant to engine operation. These have a sensing element containing a wax and aluminum mixture that expands when heated. Part #: 902-901 Line: DOR. 99. less than 10 min of offroading and the trans would overheat. com's Lifetime Replacement Guarantee. It. Canyon, Colorado. Fortunately, unsticking a car thermostat is relatively simple and you can do it in a few steps. Previously I'd seen trans temps as high as 205 in hot weather with stop and go traffic. Our Car / Truck Water Pump keep loosing Coolant + Aug 11, 2001 · Allows the water pump to circulate the engine coolant when the thermostat is closed. 5 mins no need to block rad off helps keep engine up to temp under caution and burns less fuel to keep engine warm. 1 1/2 push on hose. - 260 and 289 Item # C2OZ8597B . Bypass was inoperative and every morning my engine water temp would spike to +240F then instantly drop to 180F and stay there the rest of the day. I’m not sure if they still make them but I have one in my car and a spare in it’s original box on a shelf. 88. Envision. Bypass Flange 1 - 1 of 1 results for Thermostat Bypass Pipe Filter/Refine. com. Thermostat Bypass Pipe Jun 26, 2015 · GM Genuine Parts Bypass Pipes are designed, engineered, and tested to rigorous standards, and are backed by General Motors. It fits for Opel Astra-H, Astra-G / Zafira-A, Meriva, Vectra-C, and Zafira-B, Vauxhall Astra, Astra-G / Zafira-A, Meriva, Vectra-C, and Zafira for Europe, and the UK. It bypasses the thermostat, hence the name. Fel-Pro Coolant Outlet Gasket - 35729 Bypass style thermostat integrated into housing with inverse jiggle pin, 3 bolt holes. Jun 27, 2022 · How To Unstick a Car Thermostat? Sticking car thermostats is a common problem that can cause a variety of issues. Without the bypass pressure build up. This type of thermostat is usually used in old cars, it is very rare for new cars to still use this type. The brass elbow goes in place of where the thermostat was in the lower hose. Nov 7, 2022 · The thermostat is placed in thermostat housing next to the engine head, and it’s connected to the water pump and the radial impeller via a thermostat bypass hose. PPE - Thermostat Bypass Valve Bypass Valve Personal Experience: 5. A conventional thermostat is fitted in place of the proper bypass-sleeve thermostat. 88 $ 19. All parts are backed by the GM's warranty. Nov 20, 2024 · Planning to do a drain and fill on a 2019 Highlander xle awd. This modification does result in the engine taking slightly longer to reach operating temperature in cold weather, but it allows the thermostat to function properly when Jan 15, 2021 · ‎Note: *This performance thermostatic bypass valve only fits vehicles with 5-speed automatic transmissions, Fits: 2012-2018 Jeep Wrangler JK w/ 5-Speed Automatic Transmission|2007-2013 Jeep Grand Cherokee w/ 5-Speed Automatic Transmission|2006-2013 Dodge Charger w/ 5-Speed Automatic Transmission|2009-2014 Dodge Challenger w/ 5-Speed Automatic A "quick fix" for a bad thermostat can be to simply remove the thermostat, allowing coolant to flow unregulated into your engine. Vintage Burgundy 1966 Mustang GT Fastback Jul 22, 2021 · Car Thermostat Type. Most heater bypass tubes use an o-ring or gasket to seal the bypass tube to the engine. Weighs 1. Sort By: ACDelco Thermostat Bypass Pipe - 12593217. Sort By: Compare. carid. xfdnhqu txe wldn kvmq kiqww nst fqfmmf yvujy qvchbfxa kxv