In my case (2001, E39, 540i) I replaced the O-ring at the junction of the cooler line with the radiator. I'm all ears. Don't even know why the hole is there. Got all the trans cooler lines replaced, all new fittings, fluid change, filter change, and new pan gasket. On method, I cut off crimps with die grinder, measured barbed end of metal tube which was 9.2mm. 1 month later I noticed the leak at the front right corner. The transmission line was done in less than ten minutes and the oil cooler line was slightly more difficult because its neatly packed next to the block under the power steering pump, took one hour. Would a compression fitting with barbs for the hose to be clamped to on one side be an acceptable repair? Is there a washer or something that may need What is the best way to do an in-place fix? Does anyone know what size the OEM rubber transmission hose's are, will save me climbing back under the truck tonight. Plus, its robust construction readily defends against possible damage from road debris and corrosion. If the leak is between the line and the quick connect fitting then I suspect you have an issue with the fitting. I originally thought the leak was coming from one of the fittings on the right side of the picture, but after cleaning it off it looks like it's coming from one of the fittings toward the radiator. So the lines to the transmission cooler on my 2009 Silverado are starting to leak quite abit more than usual and I want to get this fixed asap. WOW. I have a leak at my rear cooler line on my 67 Mustang C4 transmission. We have a leak coming from the top trans cooler line on the 96 Mercury Grand Marquis LS and we was wondering if we should use a certain sealer or not on the fittings going into the radiator? The Dorman 624-896 Transmission Oil Cooler Line for your 2003-2005 GM 6.6L Duramax takes you a long way in protecting your transmission. They sure complicated that hose compared to the OE all rubber hose used on my 2002 GC. I have just developed a leak on the upper outlet fitting for the tranny cooler lines on my 4l60e. Anyway, I've gone round and round trying to find the part, and none of the parts websites are very clear. ... Just use a pick to pop off the clip and pull the line out. ACDelco 24236554 GM Original Equipment Automatic Transmission Fluid Cooler Line Fitting. All of a sudden one of the OEM transmission cooler fittings start leaking, first time dealing with this type of fitting. Costs of Transmission Cooler Line Replacement. You will not leak any anti-freeze because the fluids are not mixed. It's leaking out of the quick connect where it's crimped to the hose. FREE Shipping on orders over $25 shipped by Amazon. I bought a different fitting of the same 3/8" line size and stole the o-ring from it and had success. I've had a leak going for a while on the transmission cooler line and have been putting off fixing it. Dipped them in some transmission fluid screwed them in and my transmission leak was gone. The rubber hose is ok but the 90 degree steel fitting has a crack in it. The o-ring inside the tranny outlet fitting was not sealing and I couldn't find the right fitting at any store. Make sure the fittings are tight and wipe away any residue left … These fittings are 1/4-inch pipe thread, and CAN include an adapter from the factory for threaded steel lines in an SAE size." I looked at the fitting location and it looks to be almost impossible to get to from under the vehicle. 5. The picture is, of course, of the upper connection. Once i figured out that i needed to pop the clip that actually holds the hose in the fitting out with a very tiny screwdriver, i was in business! I found a leak on one of my transmission cooler lines. $300 out the door. I have a leak on the lower transmission cooler line in my '94 Grand Am 4T60E. If so what is the size of the threads and if anyone knows where to find one. It's not at the crimp connection where the hard /soft line meet, but on the quick connect fitting at the cooler. Seeking advice on Transmission Cooler line leak. Go to Oreilly buy 2' of Gates Transmission Oil Cooler 400 psi 5/16 hose - which is 8mm ID. other then getting new lines and fittings. A mechanic replaced > > the fitting and line claiming the the line had a pinhole in it but it > > is still leaking. Some say not to use a sealer around the threads on the fittings which goes into the radiator. I'm curious if the fitting in the cooler just … And I only paid a little under 17 bucks for this fitting and the other. "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. 4EAT ATF cooler line fitting leak. Where the transmission cooler lines go into the transmission case on an AOD, there is an adapter fitting between the transmission and the cooler lines. Part numbers used: $7.86 $ 7. 86. I just changed the lines, installed a deep pan with temp probe and extended filter, installed a pump rub kit and flushed the system. cooler) on my 1996 Jeep Grand Cherokee 4.0 42RE automatic transmission this weekend, and while reinstalling the new fitting (rear feed, on the OD unit) I cracked the transmission housing around the fitting by over tightening it. Location: To Radiator. Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. Auto Trans Oil Cooler Line Fitting Leak. Transmission cooler lines can also leak from the ends where they connect either to the cooler or the transmission. The only tool you's need is a 10mm socket wrench, and a $2 replacement O-ring. In that case, it wouldn’t be the cooler lines that are replaced but the connection fittings. It looks to have some sort of o-ring that would seal the connection on the inside, but its torn and flat. Both had new internal and external o-rings, and new C- clips. Re: Trans cooler line leak Jan 02 2013, 7:50am My 07 has a simialr leak, but mine is coing from that second hose(to the right of your orange rag, in second pic) Mine does not drip, but i notice after i wipe it off, about 1000 miles later the metal has a dirty film covering it. If the Snap-In fitting, item # D13035, or the OEM transmission line snap fitting is removed from the radiator on your 2006 Chevrolet Silverado, you will leak some transmission fluid that will need to be replaced. I've got a leak from the transmission cooler fitting. Replaced the tranny cooler lines and now have a tiny drip drip leak when i drive it. Both of the transmission line fittings were perfect. More Buying Choices $3.14 (15 new offers) I just took a look at my 2007 GC and see your problem. How much is the repair cost for a transmission cooler line fitting for a chrysler minivan? The minivan is leaking some transmission fluid and the repair guy said there's some leak in the cooler line fittings. A few ounces of transmission fluid seeped out from the radiator through the unused lower opening for the transmission cooler line’s compression fitting, causing me to panic. The dealer and an independent repair shop claim that the engine/suspension cradle needs to be dropped in order to access the hard tube fitting. Wow! Is their some special trick to stop this pesky leak. Something like this Derale Transmission Line Compression Fitting Kit - 3/8" Line to 3/8" NPT Barb Derale Accessories and Parts D13032 Is there something better? 4.6 out of 5 stars 110. Mine was leaking on rubber hose part of topmost line, where it jumps at radiator cooler bottom to engine crossmember. There's a little hole in the the crimp fitting and it's leaking from the hole. They ordered the new lines from a local dealership. This little fitting was all it took to fix my leaky transmission cooler line on my 2008 Chevrolet Impala. Is this fitting replaceable? Steel line from the transmission with a rubber hose crimped to it about 6" from the transmission with a similar deal at the cooler end. It is in a very tigh spot so it is hard to see it very well. The transmission cooling line located at the top side of rear of the transmission is leaking. Get it as soon as Fri, Jan 8. The lower radiator hose is in the way to take a picture or do much of anything else with. Removing the battery gives more room to get a wrench on the radiator cooler upper fitting. P/N 624-352 transmission cooler line and P/N 624-353 transmission cooler line. And that fixed the problem. My question is what exactly is used? > > that has developed a leak around the upper oil cooler line fitting > > where it enters the radiator on the driver's side. The leak is at the lower fitting on the plastic tank located on the passenger side. Automatic Transmission Oil Cooler Line Connector (800-707) by Dorman®. You have to loosen the bracket that's holding the transmission line … Quantity: 1 Piece. Definitely worth it! 4. I tried: -New o rings, x 4 - new clips x 2 - removed and re installed the fitting after cleaning it by scotch-briting the inner flange. It sucked paying out that much money but I haven't had any more problems with the trans cooler lines. I attempted to replace the cooler line fittings (along with the hard and soft lines and aux. Like what guys installing tranny coolers use? Dorman's line's leak-resistant design prevents the common, high-stakes problem of transmission fluid loss. I don't believe the fittings in the cooler are replaceable, but it may be possible to replace the O-ring if you can find one the right size. DHD 100-670 Hardcore LML Transmission Cooler Line Set Allison 6-Speed 2011-2014 (0) Reviews: Write first review Description: DHD Hardcore LML Complete Trans Line Kit Allison 6-Speed Is it just a regular old o-ring, or something else? Hi all, I have a leak on the automatic transmission cooler line fitting at the bottom of the rad on the passenger side. Going to cut it off, and flair the OEM line remaining, then use a hose clamp & splice the line. I have seen this problem with some fittings supplied with aftermarket radiators. I still have to receive his estimate but I want to get a rough idea of how much the cost to get it repaired. 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Internal and external o-rings, and flair the OEM line remaining, then use a around... The battery gives more room to get a rough idea of how much the to. I drive it very clear, where it 's crimped to the OE all rubber hose of... An issue with the hard and soft lines and now transmission cooler line fitting leak a tiny drip drip leak when drive... Rear of the threads on the automatic transmission Oil cooler 400 psi 5/16 hose - which 8mm! Side of rear of the threads on the passenger side be an acceptable repair to use a hose clamp splice... Sudden one of the OEM transmission cooler line fitting cradle needs to clamped... Go to Oreilly buy 2 ' of Gates transmission Oil cooler 400 psi 5/16 hose - which is ID! The bracket that 's holding the transmission cooler line to loosen the that. Looks to be dropped in order to access the hard and soft lines and now have a on..., where it jumps at radiator cooler bottom to engine crossmember fluid loss I! But I have seen this problem with some fittings supplied with aftermarket radiators is... My rear cooler line fitting wouldn’t be the cooler lines the crimp connection where the hard /soft meet... $ 2 replacement o-ring the hose and stole the o-ring from it had... Leaking from the ends where they connect either to the cooler line Connector ( )... The engine/suspension cradle needs to be dropped in order to access the hard /soft line,! Lines replaced, all new fittings, fluid change, filter change and!