Transmission cooler lines leaking at the radiator puts car owners in a distressing situation. How to replace leaking GM / Chevrolet / Chevy transmission cooler line fittings. As we’ve seen, there are a few ways to tell if you have a leak and there are also a few ways you may have a leak. Any type of transmission cooler you plan on installing will help reduce trans fluid temperatures. HOW-TO replace transmission cooler lines (2007 G6 3.5L Auto) Jump to Latest Follow 1 - 9 of 9 Posts ... having the same exact problem to the T I had my radiator replaced and that's when my problem started the shop said the fittings were defective had those replaced and still same issue that's why I ask please let me know how you fixed it also thanks ahead of time Allen . Learn more about how to install an automatic transmission oil cooler on your car, truck, or SUV. You can find transmission mounting kits here. I found it on amazon here is a link The shorter one was replace also prior to video. Aside from the purchase of a transmission cooler, additional costs may come from extra parts such as transmission fluid, transmission hose, clamps, fittings, and mounting pieces. There are a number of factors that determine if you should use your trans cooler as a stand alone unit or in series with the factor radiator transmission cool. This can be done with a double sided barb fitting, or by flaring the metal line and then clamping the new rubber hose to it. The best way to determine where the leak is coming from is to clean up the transmission, the cooler lines, and the transmission cooler. SKU # 301778. on both my cars i removed the metal lines and put these in on the trans, then just bought AN fittings back to standard rubber hoses, just double clamp the hoses on and route them out to a large cooler at the front. These heavy-duty, high-flow, flexible transmission lines are just what you need for trouble-free performance from your Allison Transmission. If you live in a very warm area, it may be better to bypass the factory transmission cooler in the radiator in favor of a larger, external transmission cooler. The Allison transmission cooler lines fix the old leaky transmission lines in your 2006-2010 GM 6.6L Duramax LBZ & LMM. The fitting for the transmission cooler line. Limited … When installing a transmission cooler on the condenser, using a transmission oil cooler mounting kit will make the process easy and hassle free. Home Delivery. An automatic transmission cooler will not only help keep your fluid temperatures lower, but improves the longevity of your transmission. I'm having to replace one of my transmission oil cooler lines and I have no idea how to get these fittings off. Get it as soon as Fri, Jan 8. Save Share. Reason being, the radiator can act as a heater and warm the transmission fluid higher than where you may be comfortable with it operating (200 + degrees), especially if you face a lot of stop and go traffic or other harsh driving conditions. Pull the caps back along the pipe. The factory cooler will help get the transmission temperature into a suitable range. Remove the transmission cooler lines and replace them with the new transmission cooler lines. The mounting kits come with heady duty plastic zip ties and rubber spacers. Delivery: Jan 13-14. 99. 99. Chevrolet / GM transmission cooler line fittings leaking solved! More often than not, most vehicles can utilize a transmission cooler to help prolong the life of their transmission. In most cases you’ll need to make a cut to the factory line and connect the new rubber line to it. Comes with 10 feet -6 An Stainless Braided 3/8” hose to cut to length, 2) -Fittings, 4) -5an To 6an Adapters,& 4) - Transmission And Radiator tubes 5/16". In most cases you’ll need to make a cut to the factory line and connect the new rubber line to it. Kit Includes: Transmission Lines Concave Washers Includes All Fittings/Hardware Note: In most cases, trucks with aftermarket … These fittings are 1/4-inch pipe thread, and CAN include an adapter from the factory for threaded steel lines in an SAE size." The spacers are used to space the cooler from the condenser to prevent direct contact between the two. There are different types of transmission coolers, and each one comes in different shapes, sizes, and has their own benefit. Very expensive. The line is usually made of steel, ranging in width from 5/16-inch to 3/8-inch with a flare nut on the end. Ultimately, the cost to install an automatic transmission oil cooler is dependent on what your needs are. Many trans coolers come with installation kits that contain rubber hose, clamps, fittings, and mounting hardware. Pull the line out of the transmission fitting, taking care not to bend the line. However, it is recommended to figure out what you need before buying a complete kit. Standard Delivery. Depending on where you live, steel transmission lines may rust out over time causing leaks, and will need to be replaced. Where ever your cooler is mounted, it needs to get enough air flow to help keep the fluid cool. 5.0 out of 5 stars 1. How to replace leaking GM / Chevrolet / Chevy transmission cooler line fittings. $9.83 $ 9. Est. How do you fix a leaky transmission cooler line? Depending on the cooler you purchase and your lines, you can spend as little as $20 extra to install a cooler, or in some cases, as much as $150 or more. Chevrolet / GM transmission cooler line fittings leaking solved! When figuring out how to install a transmission cooler, it is typically recommended to mount it in a location that gets a significant amount of airflow. In most applications where the external trans cooler is used in addition to the factory one, you will need to route the new transmission lines from the radiator to the external cooler. 83 $16.93 $16.93. When installing your new transmission cooler, it is important to figure out not only where you will mount it, but how to run the lines. That becomes your fitting the rubber line goes on. Dorman 624-284 Automatic Transmission Oil Cooler Hose Assembly for Select Chrysler/Dodge/Ram Models . Part # 800-613. Cut the line a couple inches back. A new 3/8" quick connect retaining ring; O'Reilly Auto Parts sells packages of mixed sizes. They typically resemble brake lines and are made of metal. If you plan to use rubber transmission hose and keep the stock cooler lines, you need to connect the cooler return line to your vehicle’s return line. There are two fittings a short one and a longer one. This type of transmission cooler line is found on your vehicle from the factory. Dorman Automatic Transmission Oil Cooler Line Fitting 800-613 $ 23. The biggest benefit to installing an auxiliary transmission oil cooler is that it will help do what its name indicates, which is cool your transmission fluid. It can be up to 5 feet in length, but it depends on the type of car. Thank you like and subscribe ! ADD TO CART. The easiest answer to this is, it depends. 4.7 out of 5 stars … When installing a transmission cooler in your car, truck or SUV, it is important to consider not only the cooler size, but where to mount it, and how to run the lines. This is typically found in more extreme applications such as those who drag race or tow for example. When installing automatic transmission coolers, there is often debate as to whether cooler orientation matters. You may find drops of fluid underneath your car, and it can be hard to pinpoint whether the leak is coming from the cooler lines or somewhere else. I went to replace the notoriously leaky transmission lines on steve's 1996 jeep cherokee classic when found they. TRANSMISSION COOLER LINE REPAIR KIT Item #: KCR100 $29.95 Add to Cart: BRASS 3-WAY COOLER LINE FITTINGS, 3/8" Compression to Female 1/4" NPT w/1/4" Female NPT (side) Item #: CR-1008 $2.05 Add to Cart: GM COOLER LINE REPAIR FITTING (Compression Type), 4L80E(Rear) Item #: 31285GC $10.95 Add to Cart : COOLER LINE REPAIR FITTING (Compression Type-Rear), GM … You want the already warm fluid to flow into the external cooler to help better control fluid temperatures, so the transmission cooler flow direction will look something like this: Transmission out (fluid hot) > radiator cooler in > radiator cooler out > external transmission cooler in > transmission cooler out > transmission in (fluid cool). $107.99 $ 107. When it comes to cooling your transmission, you can actually over cool it, and it may not be able to flow as well compared to warmer fluid. Typically, if the transmission cooler lines are malfunctioning, it will be because of a leak. You can use this video as reference for them. Mounting here provides significant air flow which will help keep temperatures low. If necessary, use a spray penetrating oil for corroded fittings. A new transmission oil cooler line. For a small investment, you can save thousands in repairs needed for replacing a failed transmission due to over heating. More often than not, transmission cooler orientation does not make much of a difference. Then, you can purchase stainless steel, 3/8 brake line and braided stainless transmission cooler hose with fittings from a place like Jegs and make up an awesome set. Depending on what causes the leak or where it’s at, then you have a few choices for how to fix it. If you were to just purchase the cooler then source the additional parts needed, there would not be much of an additional cost. The line pressure isn't huge, it's supplied from the torque converter but has to go back through the tcc valve in the pump and through a restriction cup hole before it comes out. Flexible Transmission Line Set -This allows flexible Trans lines to be run from the Trans to the radiator. 99. How to Check Transmission Fluid – Complete Guide, Mishimoto MMTC-WRA-07 Transmission Cooler, B&M SuperCooler Installation Instructions, B&M 70255 SuperCooler Transmission Cooler Review. A number of transmission coolers come with installation kits that contain most of these items aside from fluid. Only 12 left in stock - order soon. The new part is labeled 1 in the diagram, part number 15809054. Most transmission cooler installation kits may not be 100% complete for your application, so it would be best to assess what you need and what is included. They have brass compression fittings that directly replace the cast iron OEM press in fittings that you can only get by buying a radiator. This keep your transmission in a safe operating range which in turn will allow your transmission to last longer. I also found it on amazon here is a link https://www.amazon.com/gp/product/B0049OKZDA/ref=as_li_tl?ie=UTF8\u0026camp=1789\u0026creative=9325\u0026creativeASIN=B0049OKZDA\u0026linkCode=as2\u0026tag=mazonian-20\u0026linkId=f91b4d21e465453188698dc1367c4b46If your fittings are leaking coming from the fittings on the bottom of the transmission Save your self time and money replace them yourself. If this is the case, it is highly recommended to perform a full coolant flush to ensure no ATF got into the cars cooling system. *NOTE* Make notice of the cooler lines' proper fittings on the transmission as well as the way they are routed. These lines are bent to a strict tolerance to fit around the front end components as well as the oil pan. Get it as soon as Mon, Jan 11. 99. These heavy-duty, high-flow, flexible transmission lines are just what you need for trouble-free performance from your Allison Transmission. The below transmission cooler installation diagram shows the transmission fluid flow direction and how the fluid will be routed through a new external cooler. The BA had a radiator with a transmission oil cooler inside it. All of the parts places list a "long" (Delco 24236555 or Dorman 800-637) and a "short" (Delco 24236554 or Dorman 800-614). This also worked well… for a while. I can just barely get my hand in there. Disconnect the transmission cooler lines at the transmission and again drain the fluid into a drain pan. SKU # 825049. check if this fits your vehicle $ 17. While some may argue that you need to install a certain type of cooler inverted to prevent air bubbles, the transmission line pressure it strong enough to push fluid through the entire cooler to prevent this. Similar to the heat exchanger, when the radiator ultimately failed, coolant and transmission oil got mixed together, resulting in possible engine and transmission failure. Metal transmission cooler lines are typically pre-bent with fittings that are held on by a flare at each end of the line. In some applications however, it may be best to have a remote mounted transmission cooler that utilizes a fan to help cool the fluid. I might have some fluid leaking out of the transmission cooler line fitting at the transmission on my 05 GTP Comp G. Unfortunately, I can't find a fitting that matches what I've got. Transmission Cooler Lines Hoses with Fittings Adapters For 06-10 Chevy GM GMC 6.6L Duramax Allison Transmission Lines Repair. You will need to determine which line is the return for the transmission. 7. 5.0 out of 5 stars 1. Disengage the plastic clips from the quick connect fitting. 1/2" transmission line can be obtained from napa. FREE Shipping by Amazon. So, as soon as the transmission cooler lines at the radiator of your car are starting to leak, you should immediately take necessary steps to prevent a further issue from arising. HOW TO: Replace the transmission oil cooler line Things you will need: 3/8" quick connect tool OR; a tool capable of extracting the quick connect retainer (I used a small Allen wrench with the short end sharpened to a point). Small hard tubes at the radiator And To The Trans end, and flex hose the rest of the length. I'm pretty sure I can get the line off with a pick, but is it even possible to get the fitting off with a line wrench without dropping the tranny or the motor? Dodge ram transmission cooler line fittings. $107.99 $ 107. Attach the new cooler lines to the radiator and the transmission as well as any hangers that they may have been … It will be easier to install if you can remember how they were run before. If you have a desire to run custom lines and AN fittings, then the cost will certainly increase. Part # 800-5603. Transmission Cooler Lines Hoses with Fittings Adapters For 06-10 Chevy GM GMC 6.6L Duramax Allison Transmission Lines Repair. Hayden Automotive 397 Transmission Line Fitting Kit. It is recommended however to keep the factory radiator transmission cooler and use and external cooler if you live in a cooler climate. Mounting a transmission cooler is typically best in front of the air conditioning condenser so it gets ample air flow. Then you won't have to worry about that*ever failing again. The Fleece FPE-TL-LB7-LLY Allison Transmission Cooler Lines fix the old leaky transmission lines in your 01-05 GM 6.6L Duramax LB7 and LLY. Only 12 left in stock - order soon. While this is great, it is best to remember that these are universal kits that may not contain exactly what you need. Ive searched the DTS forums and have found no one who has attempted this on their own. Since the factory transmission cooler is typically found within the radiator, this means the whole radiator will have to be replaced as well. FREE Shipping. 8. These trans cooler line fittings are used on multiple GM, Chevy, Chevrolet vehicles. FREE Shipping by Amazon. Remove cooler line from transmission fitting. It kills me that a $10 part will cost hundreds to replace. There are a number of benefits to using a transmission cooler on your car, truck, or SUV. So, for this job my mechanic got a set of the aluminium pipes that the BA Falcon uses. How To Repair Leaky Transmission Lines On A Dodge Ram 2500 Play | Download. In addition, having the right parts to install a transmission makes the process easier. Do that for the cooler and the heat exchanger. SELECT STORE. This position will allow the trans cooler to get ample air flow while moving in addition to getting air from the engine’s cooling fans when stopped. Based on this, the best place to mount a cooler would be in front of the air conditioning condenser. 99. 4.8 out of 5 stars 301. are special tools needed to replace transmission cooler lines that connect to the compression fittings The only way to fix a bad transmission cooler or line is to replace it. Free In-Store or Curbside Pick Up. When installing a transmission cooler it is important to understand where to mount it, how to run the lines, and proper installation methods. When you install your cooler you will need to account for adding additional transmission fluid to compensate for the increased capacity of the transmission cooling system. Before you decide to install a transmission cooler, be sure to figure out what transmission cooler is best for your application. While installing basic rubber lines might work for most, in some cases, your vehicle may need custom lines, which are more costly than standard transmission lines. Reply. Dorman Automatic Transmission Oil Cooler Line Fitting 800-5603 $ 17. If you plan to use rubber transmission hose and keep the stock cooler lines, you need to connect the cooler return line to your vehicle’s return line. They channel hot transmission fluid to the radiator, where it is cooled, then return it back to the transmission. The hoses traveling from the transmission to the radiator are called transmission cooler lines. I'm keeping heat exchanger. "Transmission fluid cooler lines: on the 700R4 the bottom fitting on the right side of the transmission is the "out" line to the cooler and the top fitting is for the return line from the cooler. Frequently, they may get bent or broken during engine or radiator removal. The one we replaced in the video is the longer one. A common question we get asked is whether it is recommended to bypass the radiator with your external transmission cooler. 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