Tru-Cool Max Transmission Cooler 40,000 GVW Fluid Oil 40K True Long Brand 4739-1 LPD47391 Automatic

OPT Product Code: LNG-47391
UPC Code: 621859473915

(4.8) 12 Reviews

$123.50
Tru-Cool Max Transmission Cooler 40,000 GVW Fluid Oil 40K True Long Brand 4739-1 LPD47391 Automatic

Product Details


Tru-Cool Max transmission cooler by Long Manufacturing

Part number: LPD47391

GVW Rating: 40,000 GVW

BTU Rating: 45,000

Cooler size: 8.5" x 22.75" x 1.25"

The fittings on this cooler are 3/8" inverted flare.

Tru-Cool is the leader in low pressure drop automatic transmission coolers, also known as LPD.

This is the ultimate cooler for heavy towing and is a must for heavy duty applications, including racing. Heat is what kills an automatic transmission. If you want to extend the life of your transmission and avoid a premature, costly rebuild, this is very cheap insurance.

All parts and instructions are included to mount and plumb this cooler. 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.  Upgraded line and fittings would need to be purchased separately.  

Retail price is $200+.

All True-Cool coolers come with a manufacturer's limited lifetime warranty. 

Alternate part numbers: OC-4739, OC-4739, LPD-4739

UPC: 621859047390

(Purchase Part number LNG-4739 for this same cooler with the thermal-bypass.)

Tru-Cool Max Transmission Cooler 40,000 GVW Fluid Oil 40K True Long Brand 4739-1 LPD47391 Automatic

OPT Product Code: LNG-47391
UPC Code: 621859473915

(4.8) 12 Reviews

$123.50

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5
It just works
Lance
07/21/2019
Verified Buyer
I have a built Allison transmission in my 2011 Duramax; factor that in with the west Texas heat and the factory transmission cooler just couldn’t keep up. After installing the Tru Cool Max I’m seeing 30 to 40 degree lower transmission temperatures now! Great, effective, quality product. Highly recommended!
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5
40k trans cooler
Isaac M Ramos
07/13/2019
Verified Buyer
I recently purchased a 40k transcooler for my 08 Chevy 2500 and man did it do exactly what I needed. My gauges changes 35-50 degrees cooler and I couldn't be any happier. Shipping was 5 days like planned. Thanks Oregon performance
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5
OPT
TD
06/26/2019
Verified Buyer
Great cooler. Great Price. Well packaged arrived quickly. No damage THxs
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5
Tru Cool 4739-1
David Farrell
05/02/2019
Verified Buyer
The cooler came quick and with no damage. Installation was easy. Trans is running so cool now I can't believe it. Great product. I should have done this years ago.
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3
Large well made cooler - Hard to find AN fittings
Dejay
02/01/2018
Verified Buyer
The cooler is large and appears to be very well made. No doubt it is going to help keep everything cool. Only problem I had was the fittings on it are 3/8 inverted flare. I was not able to find fittings to convert this to 6-AN so installed it with the bard fittings that were supplied.
Very sorry for any issue you may have had. There are a few options on the inverted flare to -6 AN fittings. Russell brand, part number 640380 is a 5/8"-18 to -6 AN adapter that will work.
2 of 2 customers found this helpful.
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5
Fast shipping
G
12/21/2017
Verified Buyer
Shipped cooler right away. Nice product. Keeps my F250 cool.
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5
Tru-Cool Max 40,000 GVW 4739-1 LPD47391
Dave N.
09/20/2017
Verified Buyer
Great Service, Great price, Fast Shipping, Cooler Arrived in perfect shape installed on my 2013 Silverado with some fabrication Huge difference in lowering the temperature Death Valley tested, I'm extremely Pleased Thanks OPT.
6 of 6 customers found this helpful.
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5
40.000 gvw Tru cool trans cooler
Bryan
06/03/2017
Verified Buyer
This 40k cooler fit with some fab work in in my 2008 sierra1500 very easy,Dropped trans temp from 195* to 160* works very good ran it inline with radiator cooler
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5
Awesome Cooler
Ruben
05/14/2017
Verified Buyer
Awesome Cooler & Great service from Oregon Performance Transmission.
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5
Best cooler ever
Ahmed Al-Abri
04/05/2017
Verified Buyer
the strongest cooler in the market unti now, amazing for hot desert climate and extreme sand driving. thanks oregon for the fast service.
1 of 1 customers found this helpful.
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5
NICE COOLER
CODY
02/10/2017
Verified Buyer
THE COOLER IS GREAT. JUST WHAT I NEEDED. SHIPPED RIGHT AWAY.
1 of 1 customers found this helpful.
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5
Top quality!
G.D.
02/03/2017
Verified Buyer
The Tru-Cool Max cooler fixed my customer's transmission overheat where the prior installed "10,000 pound RV" cooler could not. The Tru-Cool Max design improved air flow through the radiator and dropped his engine temperature as well. The thermal bypass appears to be aircraft quality and allows quick warm up. Good mounting hardware too. In a separate class from common parts store coolers.
3 of 3 customers found this helpful.
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