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SKU #: XDP-XD309 MPN #: XD309

XDP X-Tra Cool Direct-Fit Transmission Oil Cooler 01-05 6.6L GM Duramax

$235.95
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Description
While most aftermarket transmission coolers are a universal, remote mount design, this unit is a direct replacement for your worn cooler. If your Allison transmission is asking for a cool off, look no further than this heavy duty unit. XDP's XTRA-Cool Transmission Oil Coolers are made using techniques borrowed from the HD and semi-truck industry to provide you with the ultimate in strength and durability. Built for more than just increased strength, this trans cooler features a high-efficiency core that is specially designed to maximize transmission cooling potential over the factory unit. Each kit comes ready to install with the needed fittings, brackets, and hardware to make this a bolt-on installation for your GM Duramax/Allison powetrain.

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While most aftermarket transmission coolers are a universal, remote mount design, this unit is a direct replacement for your worn cooler. If your Allison transmission is asking for a cool off, look no further than this heavy duty unit.

XDP's XTRA-Cool Transmission Oil Coolers are made using techniques borrowed from the HD and semi-truck industry to provide you with the ultimate in strength and durability. Built for more than just increased strength, this trans cooler features a high-efficiency core that is specially designed to maximize transmission cooling potential over the factory unit. Each kit comes ready to install with the needed fittings, brackets, and hardware to make this a bolt-on installation for your GM Duramax/Allison powetrain.

Vehicle Fitment
2001-2005 6.6L GM Duramax
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
FEATURES & BENEFITS:
  • Direct Fit
  • Replaces Factory Cooler
  • Upgraded Design for Increased Durability
  • High Efficiency Core to Maximize Cooling
  • 1 Year Warranty
SPECIFICATIONS:
  • Core Width: 12-1/2"
  • Core Height: 7-3/4"
  • Core Thickness: 2"
  • Overall Length: 16"
  • Cooler Fittings: 7/8-14 UNF
About XDP
XDP is Your Source for All Kinds of Diesel Accessories

Whether you're after engine dress up items, heavy duty gear reduction starters, transmission coolers, or anything in beteween, Xtreme Diesel Performance manufacturers a full breadth of products for your Cummins, Duramax, Powerstroke, or EcoDiesel to keep it on the road and running properly. Nowadays, its hard to find a manufacturer of OE level products that produces at least a little bit of everything. Instead, you're forced to buy your new injectors from one company, the injection pump from another, and then your gasket installation kit from yet another company. By maintaining and constantly growing their catalog of XDP Mfg. branded parts, you're able to stick with a single manufacturer in many instances, adding simplicity and peace of mind that components will work in tandem with one another.

From Exhaust Bolts to Radiators, Xtreme Diesel Power Has Your Needs Covered.

Due to their extensive knowledge in light duty diesel parts, XDP Manufacturing is able to determine shortcomings in factory parts and create a solution to ensure your diesel truck is as reliable as it can be. When it comes time to replace a damaged or worn part on your diesel truck, wouldn't you rather replace it with something that's proven to last, and hopefully last longer than the piece you're replacing? Of course you would! This is where you can trust in XDP's line of electronics and engine parts to keep your truck on the road for the long haul.

Overall rating: 4.071429 / 5 from 14 reviews.

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Reviews

XDP X-tra cool Duramax trans cooler

"Cooler was an easy install with fittings supplied, nice drop in operating temperature with normal driving conditions. Waiting to see how it works under towing conditions with 24ft enclosed cargo trailer"

DAVID A. (4/5)

Radiators

"Great product delivered fast buy all my parts from them"

Daniel W. (5/5)

Cooler

"Working great. I got the ppe trans pan as well. With both installed. Never gets over 200. Greatness."

Brian S. (5/5)

Bad bad bad

"Bad bad bad"

Jose P. (1/5)

Excellent

"Great customer service, great products at a great price. Perecto"

Andrew N. (5/5)

Nice cooler

"This cooler, paired with aftermarket lines, dropped my trans temp when towing at least 30 degrees. And the supplied brackets and adapters make sure you won’t have any mounting issues"

Andrew W. (5/5)

Wrong Fittings

"Order was supposed to come with two sets of 2 fittings (for different years is truck). My order came with 1 of each fitting type. After a month going back and forth with customer service I still do not a complete set of fittings. Be wary before taking problems to customer service, especially if you need it done quickly."

Jordan K. (1/5)

It worked great. stock one

"It worked great. stock one must have been really plugged up runs about 25 degrees cooler."

Colton F. (5/5)

Awesome trans cooler!

"Just put this in my truck and it runs right around 15 degrees cooler super simple easy to install product thank you and got some bitchin stickers!!"

Cam P. (5/5)

Super cool😎

"This thing definitely lower the temperatures of my transmission pretty impressed to see it in action on the gauges!"

Andrew M. (5/5)

Q&A

Bought this cooler but after market cooler lines I have have female fittings going to the cooler. Can I get adapter cuplers for them?
For something like this, with the variety of different fitting options depending on what aftermarket cooler lines you have. I would recommend giving our sales line a call, and we should be able to get you situated.
Will this fit with fleece lines?
These are intended to fit the factory hard lines. You may be able to find some adapters to convert the fittings to work with the Fleece lines. -Mark
I have the 2001 2500hd with allison 5spd with an 8.1 gas. Will this cooler work with it?
8.1 and diesel do not share the same cooler. This one would not work. DppSands
Wondering if the xtra cool trans cooler is useing the factory lines and fittings with the spring clips as i just replaced my lines and now found a leak in the cooler
Yes it uses the factory lines and clips. It is a direct fit replacement. DppSands
are the fittings fixed or do they screw out? I have the flex hoses that use compression fittings and do not use the factory lines so won't use the factory fittings.
These would be fixed to work in conjunction with the factory OEM style lines and fittings. - AW