The bypass works very well with other coolers, such as the, We sell the bypass individually under part number, If you would like to purchase a cooler with a bypass, we sell that package under part number, If you do not need the thermal bypass but. Optional: Thermal Bypass [+$40.00] Optional: Black Braided -6AN Hose Kit … $189.99 All components are available as a universal kit* or are sold separately. $189.99. This cooler has 3/8" inverted flare fittings and comes with a thermal bypass valve so you can use this cooler in cold weather and the fluid will bypass until the transmission comes up to operating temeratures. When an auxiliary transmission oil cooler is required for your vehicle, Tru-Cool Max delivers optimal protection with double the cooling performance of our other products. This cooler has 3/8" inverted flare fittings and comes with a thermal bypass valve so you can use this cooler in cold weather and the fluid will bypass … When the transmission is cold, the thermal bypass will "bypass" the cooler so it can bring the transmission up to operating temperature more quickly. If you would like to purchase a cooler with a bypass, we sell that package under part number LNG-4739. Ecommerce Web Development: Phosphor Media. Oregon Performance Transmission is the best place on the web to buy transmission parts! Tru-cool Thermal Bypass Transmission Cooler By-pass Cold Weather Use Long Brand Tru Cool - $52.04. 08z71bgm Supporting Member. I already own a cooler but it doesn’t have a bypass. Looked at a lot of different coolers on the market. }. The LPD4739 trans cooler includes a thermal bypass. NOTE: OPT uses javascript to enhance and secure your online experience. NOTE: OPT uses javascript to enhance and secure your online experience. We not only carry a wide range of performance minded transmission parts for your car, but we also provide the best customer service; before and after the sale. Be the first to review this product. Worked well for my application. Drive Hard. Good mounting hardware too. This is a stacked plate, low pressure drop unit. The LPD-4739 cooler includes the thermal bypass for lower temperature climates. This heat is absorbed by the oil in the transmission and is extracted through a cooling system. /* review stars */ The Tru Cool 40k comes with a complete installation kit with two variations, LPD47391, and LPD4739. The Tru-Cool Max cooler fixed my customer's transmission overheat where the prior installed 10,000 pound RV cooler could not. Transmission fluid is heated as it passes through the radiator, essentially removing the need for an external thermal bypass. Add to the 47391 or any other cooler with 3/8" or … Dieselsite.com shows that the E4OD requires it. I tow a 24 foot travel trailer with two ATVs on the back of my truck. { Oregon Performance Transmission will NEVER sell, transfer, show or otherwise cause your email to be seen by anyone else. Bump. The thermal bypass is an added valve that goes in the transmission line. It’s working good so far. Read honest and unbiased product reviews from our users. I have been told the E4OD will not get to the right operating temps if I don't run one. SKU: LPD47391. Can I buy the bypass separately and add it on? Thread is 5/8" - 18 UNF 2B thread (3/8" inverted flare). ... 248 product ratings - Tru-Cool Max 40,000 40K GVW Transmission Fluid Oil Cooler Heavy Duty and Towing. Keep your operating temperatures low, even in harsh conditions, and protect the vehicle you rely on. Tru-Cool 40,000 GVW LPD4739 Transmission Cooler Thermal Bypass 40K Fluid Oil 4739 Max True Long. If you live in an area that routinely experiences temperatures at or below 32F, you should consider using the Tru-Cool 40,000 GVW cooler that comes with the external thermal bypass. Driving out of the garage 10 miles or so the trans gauge barely registers above the 100* reading even with the 3200 stall (hwy driving). Top Rated Seller … If you live in a cold climate where it’s freezing in the winter a lot you can use TruCools thermal bypass so nothing flows until a certain temp. In the description of the Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass: "comes with a thermal bypass valve so you can use this cooler in cold weather and the fluid will bypass until the transmission comes up to operating temeratures." This one was rated high and has a lot of cooling capacity and the price is right. We not only carry a wide range of performance minded transmission parts for your car, but we also provide the best customer service; before and after the sale. Tru-Cool 40k Transmission Cooler. I assume the 44k has a 4k higher capacity.. Is that overkill? TRU-COOL MAX LPD4739 TRANSMISSION OIL COOLER. I'll have full bolt on & stall eventually. This valve will bypass the cooler until the fluid temperature reaches approximately 180 degrees. This cooler … Here in Texas, the summers get pretty hot. Would you think its a good idea to remove the small stock trans cooler when installing the Tru-cool or keep both. Tru-Cool 40,000 GVW LPD4739 Transmission Cooler Thermal Bypass 40K Fluid Oil 4739 Max True Long. 180 +-. This is a stacked plate, low pressure drop unit. The fittings on this cooler are 3/8" inverted flare. What about using the thermal bypass valve. All parts and instructions are included to mount and plumb this cooler. If you typically have days or nights below freezing during the winter, you should buy this cooler with the bypass. Hi, everyone I'm looking to install a Tru-Cool Trans By-pass Valve along with the Auxiliary Hayden 678 Trans Cooler... From my understanding the By-pass Valve fully opens at -/+ 180°. Jul 21, 2020 at 3:53 PM #50. Copyright © 2021 Oregon Performance Transmission. Mine is the same 180 degree cut over valve but the reality is it starts to close the bypass starting in the 165 sump temp range. If you want to extend the life of your transmission and avoid a premature, costly rebuild, this is very cheap insurance. I installed the cooler on my 2002 GMC 2500HD truck. When the transmission is cold, the thermal bypass will “bypass” the cooler so it can bring the transmission up to operating temperature more quickly. This is the ultimate cooler for heavy towing and is a must for heavy duty applications, including racing. Ecommerce Web Development: Phosphor Media. I'm in NJ so it can be pretty cold in the 10-20s sometimes Side note.. My tru-cool doesn't have the thermal bypass, didn't think I'd need one living in SC where our winters are usually mild. Copyright © 2021 Oregon Performance Transmission. Our most popular transmission cooler from Tru-Cool™, part number LNG-47391 , has a sister cooler under part number LNG-4739 . So if you already have a cooler you like, adding the bypass on is definitely okay. External thermal bypass for large coolers used in cold climates (32 degree -). A lot of people know about the great transmission cooling products Tru Cool™ offers, but sometimes it’s confusing as to whether or not a thermal bypass is needed with a cooler. #epSummary .fa, #etSummary .fa, .esSummary .fa, .epRating .fa, .etRating .fa, .randomStars .fa { color: #FFD700; font-size: inherit; text-rendering: auto; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }, Tru-Cool Max transmission cooler by Long Manufacturing. THERMAL BYPASS VALVE TWO STYLES OF MOUNTING HARDWARE. ivin74 and PNW VietVet like this. The 4739 comes with a thermal bypass, while the 47391 does not. We sell the bypass individually under part number LNG-4739P6. Manufacturer: Tru-Cool. Due to liability issues, we can't recommend a heat exchanger. The thermal bypass is a small added valve that goes in the transmission line. Yes. Im looking into getting a tru-cool 40k trans cooler and was wondering about getting the cold weather bypass kit along with it? This Tru-Cool Max 4739 unit is a 40K model. What is the thread on LPD-4739? *In the 94-97 Ford trucks, remove your factory cooler. }. Tru Cool 47391 40k GVW Transmission Coolers in Stock and Ready to Ship. Extend the life of your transmission and avoid costly repairs with Tru-Cool® transmission and engine coolers. This cooler is rated at 40,000 GVW and measures 8.5"x22.75"x1.25". If you want to install this cooler with upgraded hose and fittings, the 5/8”-18 threads in the cooler would allow you to convert over to AN style to use with braided or Socketless hose. Grab an Lsx Matt Hoodie or Tee here:https://teespring.com/stores/lsxmerchFollow me on Instagram! The thermal bypass appears to be aircraft quality and allows quick warm up. This new cooler is 4 times the size of the old one. Tru-Cool 40,000 GVW LPD4739 Transmission Cooler Thermal Bypass 40K Fluid Oil 4739 Max True Long OPT Product Code: LNG-4739 High Performance Truck Tru-cool Max 40,000 40k Gvw Transmission Fluid Oil Cooler Tru-cool Max - $419.95. Ecommerce Web Development: Phosphor Media. Alternate part numbers: OC-4739, OC-4739, LPD-4739. For many people, the busyness of summer travel has settled down, the kids are back in school, and there’s finally time to work on vehicle projects before the snow and freezing temperatures hit. For more information about transmission or engine oil coolers, please feel free to contact us at sales@oregonperformancetransmission.com. The bypass works very well with other coolers, such as the Tru Cool™ 49211 cooler. Use on 5/16" & 3/8" line sizes ONLY!! I received my tru cool tranny cooler in a couple of days. Our most popular transmission cooler from Tru-Cool™, part number, Yes. C $525.23. Tru-Cool Max 40,000 GVW Transmission Performance Oil Cooler. The easiest install ever, and my trans stays at 165-172 degree's in stop and go traffic in the Vegas Heat (100-115 degrees outside temp), and the hottest it has got towing a 6800 lb trailer was 202. Long Tru-Cool Max transmission cooler P/N LPD47391. I just had enough hose. Truck stays in a climate controlled environment around 68* in the winter. With a poor cooler or none then fluid temps in the sump can be 250+ degrees and potentially blow out the vent In the top of the trans. Upgraded line and fittings would need to be purchased separately. A bypass is not something that is typically needed unless you live in a fairly cold climate; for example, a place where temperatures in the winter are regularly below 32°F. Typical cooler installation. Also what's the cold weather bypass? Tru-Cool Thermal Bypass 4739P6 Long Brand Transmission Cooler External 708 4739-P6 True. Whats people lookup in this blog: Tru Cool Transmission Cooler Thermal Bypass; About author. Free shipping. As operating temperatures increase, the ATF heats up and becomes thinner. It took me a couple of hours and the kit came with everything I needed. Heat is what kills an automatic transmission. Tru cool max transmission cooler hd lpd4739 with thermal bypass tru cool max 40k gvw transmission cooler tru cool 40k transmission cooler review guide tru cool 40 000 gvw lpd4739 transmission cooler thermal bypass 40k. Top Rated Seller Top Rated Seller. Our most popular transmission cooler from Tru-Cool™, part number LNG-47391, has a sister cooler under part number LNG-4739. I installed the thermostat that came with this kit as well. This cooler is a "stand-alone" cooler designed to handle the heat load by itself, but in the 99-03 Ford trucks it can be used as an add-on cooler in addition to your OEM cooler. So far so good. Find helpful customer reviews and review ratings for Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass at Amazon.com. Ecommerce Web Development: Phosphor Media. New to these coolers as of 30 mins ago when found a tru cool 40k for 100 shipped and a 44k with the bypass for 130 shipped. Brand New. Some people elect to bypass the radiator for more cooling, but I did not. Tru-Cool 40,000 GVW LPD4739 Transmission Cooler Thermal Bypass 40K Fluid Oil 4739 Max True Long. Maintain lower temperatures in your transmission and lubricant with Tru-Cool and extend the life of the vehicle you depend on. What does it do and with me living in south GA (Very close to FL) would I need that and right now I have a 4L60e but will be upgrading to a 4L80e so I can swap it right, I wouldnt see why not? Rest Easy. Tru-Cool Max Transmission Cooler 40,000 GVW Fluid Oil 40K True Long Brand 4739-1 LPD47391 Automatic, Tru-Cool 29,200 BTU H7B Engine Oil Cooler External Motor Cooling 1/2 NPT Fittings 4263P52, Lubegard Kooler Flush Transmission Line & Cooler Cleaner, { Oregon Performance Transmission will NEVER sell, transfer, show or otherwise cause your email to be seen by anyone else. $51.20 (5) 1 Review. The Tru-Cool system then directs the ATF through the core, where it is cooled. OIL COOLER, TRU-COOL MAX WITHREMOTE THERMAL BYPASS. WITH COLD WEATHER BYPASS KIT. Tru-Cool 28k: 130* If you have a factory GM transmission cooler, the fluid path goes from Transmission > Radiator > Trans Cooler > Transmission. The only difference between the two? I installed the Tru-Cool 40k Cooler 3-4 years ago on my Silverado, I used the install kit sold by Time2Kill on PerformanceTrucks. I haven’t had the time to put it thru the real test as of yet. When the transmission is cold, the thermal bypass will "bypass" the cooler so it can bring the transmission up to operating temperature more quickly. Kit came with everything i needed different coolers on the web to buy transmission parts suited my... It thru the real test as of yet or any other cooler with manufacturer! Your transmission and avoid a premature, costly rebuild, this is cheap. It is cooled at 40,000 GVW LPD4739 transmission Oil cooler … Truck stays in a couple days. Ago on my Silverado, i used the install kit sold by Time2Kill on PerformanceTrucks sold by Time2Kill on.... 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Javascript to enhance and secure your online experience i tow a 24 foot travel trailer two... Temps if i do n't run one 180 degrees Oil cooler Tru-Cool Max 40,000 GVW! Do n't run one cooler until the Fluid temperature reaches approximately 180 degrees your vehicle to the Tru-Cool cooler! 24 foot travel trailer with two ATVs on the market environment around 68 * in the Tru-Cool brochure to your! Small added valve that goes in tru cool 40k thermal bypass sump can be pretty cold in the winter bolt on stall... Fluid temperature reaches approximately 180 degrees i Received my Tru Cool tranny cooler ’! Freezing during the winter, you should buy this cooler are 3/8 '' line sizes ONLY!... 4739 unit is a great time to consider installing a transmission cooler thermal bypass transmission from. Bypass on is definitely okay, while the 47391 or any other cooler with 3/8 or. Is right cooling, but i did not assume the 44k has a sister cooler under part number LNG-4739 335... 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