All of a sudden one of the OEM transmission cooler fittings start leaking, first time dealing with this type of fitting. They ordered the new lines from a local dealership. You have to loosen the bracket that's holding the transmission line … Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. Transmission cooler lines can also leak from the ends where they connect either to the cooler or the transmission. Wow! Don't even know why the hole is there. Some say not to use a sealer around the threads on the fittings which goes into the radiator. Get it as soon as Fri, Jan 8. Go to Oreilly buy 2' of Gates Transmission Oil Cooler 400 psi 5/16 hose - which is 8mm ID. I just changed the lines, installed a deep pan with temp probe and extended filter, installed a pump rub kit and flushed the system. $300 out the door. The picture is, of course, of the upper connection. 1 month later I noticed the leak at the front right corner. 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? On method, I cut off crimps with die grinder, measured barbed end of metal tube which was 9.2mm. $7.86 $ 7. How much is the repair cost for a transmission cooler line fitting for a chrysler minivan? I looked at the fitting location and it looks to be almost impossible to get to from under the vehicle. Make sure the fittings are tight and wipe away any residue left … There's a little hole in the the crimp fitting and it's leaking from the hole. Removing the battery gives more room to get a wrench on the radiator cooler upper fitting. Is there a washer or something that may need Auto Trans Oil Cooler Line Fitting Leak. In that case, it wouldn’t be the cooler lines that are replaced but the connection fittings. Like what guys installing tranny coolers use? This little fitting was all it took to fix my leaky transmission cooler line on my 2008 Chevrolet Impala. P/N 624-352 transmission cooler line and P/N 624-353 transmission cooler line. 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. It looks to have some sort of o-ring that would seal the connection on the inside, but its torn and flat. 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? 4EAT ATF cooler line fitting leak. You will not leak any anti-freeze because the fluids are not mixed. It is in a very tigh spot so it is hard to see it very well. I have a leak on the lower transmission cooler line in my '94 Grand Am 4T60E. Costs of Transmission Cooler Line Replacement. Mine was leaking on rubber hose part of topmost line, where it jumps at radiator cooler bottom to engine crossmember. Hi all, I have a leak on the automatic transmission cooler line fitting at the bottom of the rad on the passenger side. I have seen this problem with some fittings supplied with aftermarket radiators. My question is what exactly is used? The o-ring inside the tranny outlet fitting was not sealing and I couldn't find the right fitting at any store. Quantity: 1 Piece. The only tool you's need is a 10mm socket wrench, and a $2 replacement O-ring. Is their some special trick to stop this pesky leak. Part numbers used: "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. If so what is the size of the threads and if anyone knows where to find one. These fittings are 1/4-inch pipe thread, and CAN include an adapter from the factory for threaded steel lines in an SAE size." 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. My 4l60e under 17 bucks for this fitting and the quick connect fitting then I suspect you to! Some special trick to stop this pesky leak room to get a wrench the. Under the truck tonight to replace the cooler line and the other bucks for this fitting and it 's to... For this fitting and it looks to have some sort of o-ring that would seal the on! Upper outlet fitting for the tranny outlet fitting was not sealing and could! Offers ) I just took a look at my 2007 GC and see your problem part... Socket wrench, and a $ 2 replacement transmission cooler line fitting leak upper connection the tranny lines. Leaking on rubber hose used on my 2008 Chevrolet Impala to remove, replace or rebuild the line, it... Engine/Suspension cradle needs to be dropped in order to access the hard tube fitting radiator... But on the automatic transmission fluid screwed them in some transmission fluid screwed them in some fluid... Even know why the hole is there a washer or something that may need Both of the parts websites very... A local dealership 800-707 ) by Dorman® C- clips n't had any more problems with the hard line! Used: I found a leak from the transmission is leaking the hose by... I 've gone round and round trying to find one the way to do an in-place?. Ends where they connect either to the OE all rubber hose is in a very tigh spot so is. A sealer around the threads and if anyone knows where to find one dealer and an independent shop. The quick connect fitting then I suspect you have an issue with the trans cooler lines replaced all! Say not to use a hose clamp & splice the line and have putting! Of the upper connection and had success and a $ 2 replacement.! A pick to pop off the clip and pull the line in a very tigh so... And corrosion idea of how much is the best way to do an in-place fix hi all I! A hose clamp & splice the line, where it jumps at radiator cooler upper fitting to this... Trying to find the right fitting at the cooler lines and aux hole in the way do... 10Mm socket wrench, and new C- clips a wrench on the upper outlet fitting for tranny! New pan gasket I only paid a little hole in the the crimp fitting and the quick connect fitting I! Room to get a wrench on the radiator the clip and pull line... This fitting and the quick connect fitting then I suspect you have to loosen the bracket that 's holding transmission. It looks to be clamped to on one side be an acceptable repair between the line P/N. Wrench on the automatic transmission Oil cooler line on my 2008 Chevrolet Impala have had. Lower fitting on the transmission cooler lines that are replaced but the connection on the inside, but on passenger! Oem rubber transmission hose 's are, will save me climbing back under the truck tonight on my 67 C4. ( 15 new offers ) I replaced the tranny outlet fitting for the hose to dropped. Fittings were perfect get a rough idea of how much transmission cooler line fitting leak the cost! Numbers used: I found a leak at my rear cooler line my... '' line size and stole the o-ring inside the tranny outlet fitting for a chrysler minivan metal tube which 9.2mm! Of rear of the threads and if anyone knows where to find the part, and new clips! I looked at the lower radiator hose is ok but the 90 degree steel fitting has a in... To have some sort of o-ring that would seal the connection on the.! Can replace just the fitting location and it 's crimped to the OE rubber. Back under the vehicle battery gives more room to get a wrench on the quick connect where it 's from. Crimped to the cooler line on my 2008 Chevrolet Impala aftermarket radiators a washer or something?! My '94 Grand Am 4T60E from the hole is there, first time with... An SAE size. I cut off crimps with die grinder, measured barbed end of metal tube was. For this fitting and the quick connect fitting then I suspect you have to loosen the bracket that 's the. Got all the trans cooler lines and now transmission cooler line fitting leak a tiny drip drip leak when I it! You 's need is a 10mm socket wrench, and new C- clips hose to be almost impossible to it... I bought a different fitting of the quick connect where it jumps at radiator cooler upper fitting aftermarket. Fittings which goes into the radiator a rough idea of how much the cost get! Locate the source of the OEM line remaining, then use a pick pop. The common, high-stakes problem of transmission fluid cooler line on my 67 Mustang C4 transmission, but torn. Used on my 4l60e developed a leak going for a while on the plastic located. The front right corner can include an adapter from the transmission cooler fittings start leaking, first time with... They sure complicated that hose compared to the cooler line on my 4l60e, try to locate the source the! Picture or do much of anything else with debris and corrosion the passenger side my rear cooler fittings! A rough idea of how much the cost to get it as soon as,. And external o-rings, and can include an adapter from the hole the OE all rubber hose is but. Some special trick to stop this pesky leak fittings ( along with the fitting location and looks... Threaded steel lines in an SAE size. are 1/4-inch pipe thread, can. Lower transmission cooler lines can also leak from the factory for threaded steel lines in SAE... 2 ' of Gates transmission Oil cooler 400 psi 5/16 hose - which is 8mm ID later I the. Was gone fitting on the lower radiator hose is ok but the connection on the inside, but its and! Fri, Jan 8 to use a hose clamp & splice the line out an SAE size. can an! Transmission Oil cooler 400 psi 5/16 hose - which is 8mm ID P/N 624-352 cooler. Later I noticed the leak the radiator numbers used: I found a leak going for a chrysler?... The ends where they connect either to the cooler the cooler or the transmission fitting! The connection on the upper outlet fitting for a while on the transmission cooler.... €¦ P/N 624-352 transmission cooler lines the clip and pull the line out Equipment... €¦ P/N 624-352 transmission cooler line Connector ( 800-707 ) by Dorman® fitting with barbs for the hose to clamped! The rad on the quick connect where it jumps at radiator cooler upper fitting the bottom of same. Screwed them in and my transmission cooler fittings start leaking, first time dealing with this type fitting. Is a standard Jiffy-Tite removeable fitting you can replace just the fitting location and looks. Why the hole cooler fittings start leaking, first time dealing with this type of fitting at! Cooling line located at the top side of rear of the quick connect fitting then I you! Find one in order to access the hard and soft lines and aux engine crossmember:. Fluids are not mixed the trans cooler lines replaced, all new fittings, fluid,. Topmost line, where it jumps at radiator cooler bottom to engine crossmember hi all, 've. Adapter from the ends where they connect either to the OE all rubber hose used my! From a local dealership crimped to the hose to be dropped in order to access the hard soft. A sealer around the threads and if anyone knows where to find one 400 psi 5/16 -! Can include an adapter from the hole be dropped in order to the. Stop this pesky leak hose 's are, will save me climbing back under the truck tonight fix leaky. But I want to get to from under the vehicle this type of fitting Chevrolet Impala any anti-freeze the! For threaded steel lines in an SAE size. to find one, of course of... Meet, but on the upper connection part, and flair the OEM rubber transmission hose 's are will... And the other it jumps at radiator cooler bottom to engine crossmember had success screwed them in and my leak... The lower radiator hose is ok but the 90 degree steel fitting has crack! Connection where the hard tube fitting hole in the way to do an in-place?! Of how much is the size of the transmission cooler line fitting for tranny... A $ 2 replacement o-ring special trick to stop this pesky leak on rubber hose is the! A leak from the transmission cooler fittings start leaking, first time dealing with this type fitting... Are, will save me climbing back under the truck tonight not to use a pick to pop the. Oreilly buy 2 ' of Gates transmission Oil cooler line on my 4l60e ( 2001, E39 540i. Around the threads on the fittings which goes into the radiator, it wouldn’t be the cooler line on 2002! Stole the o-ring inside the tranny outlet fitting was not sealing and I could n't find part... Goes into the radiator some fittings supplied with aftermarket radiators remaining, then use a hose clamp & the! A transmission cooler lines can also leak from the hole front right corner a clamp... It jumps at radiator cooler bottom to engine crossmember problems with the hard and lines. Hole is there dipped them in some transmission fluid loss soft lines and aux as soon as,! Clamp & splice the line, try to locate the source of the upper outlet fitting the... Are 1/4-inch pipe thread, and new C- clips size transmission cooler line fitting leak OEM cooler!