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Mishimoto MMTC-DMAX-01SL Transmission Cooler Duramax - 2001-2003 6.6L LB7

(Chevrolet Silverado 2500 HD 2001-03, Silverado 3500 2001-03; Toyota 4Runner 1990-95, Highlander 2020-21; GMC Sierra 2500 HD 2001-03 + 4 more models)

Part of: Mishimoto Transmission Cooler for Ford Powerstroke

Other options in this family: Mishimoto MMTC-F2D-17SL Mishimoto MMTC-F2D-03SL Mishimoto MMTC-DMAX-15SL Mishimoto MMTC-F2D-11SL Mishimoto MMTC-F2D-20SL

Manufacturer

Picture for manufacturer Mishimoto

Part Number

MMTC-DMAX-01SL
9 reviews
Sale Price

$498.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Mishimoto MMTC-DMAX-01SL automatic transmission oil cooler is a high-performance direct-fit upgrade designed specifically for 2001-2003 Chevrolet and GMC trucks equipped with the 6.6L Duramax LB7 engine. This heavy-duty cooler provides significantly enhanced cooling capacity to protect your transmission during towing, hauling, and demanding driving conditions.

Key Features:

  • 174% greater core volume than the factory cooler for superior heat dissipation
  • 192% greater external fin surface area compared to stock for maximum cooling efficiency
  • Direct-fit design for easy installation on all 2001-2003 Duramax LB7 applications
  • CNC-machined adapters included for seamless connection to stock transmission fluid lines or aftermarket AN lines
  • Durable construction designed to withstand high pressures and extreme temperatures
  • Backed by Mishimoto's Lifetime Warranty for peace of mind

This transmission cooler is an essential upgrade for Duramax owners who regularly tow heavy loads or operate in hot climates. By keeping transmission fluid temperatures in the optimal range, this cooler helps extend transmission life and maintain consistent performance under stress.

Products specifications

Fits

Chevrolet Silverado 2500 HD 2001-03, Silverado 3500 2001-03; Toyota 4Runner 1990-95, Highlander 2020-21; GMC Sierra 2500 HD 2001-03, Sierra 3500 2001-03; Pontiac Bonneville 1995-99; Suzuki XL-7 2007-09; Land Rover Range Rover Velar 2018-21

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

TechSpec Core Length (in)

27.95

TechSpec Core Height (in)

5.78

TechSpec Rows

13

TechSpec Engine Codes

6.6L Duramax

TechSpec Note

This kit fits with early 2003 trucks with orange clips. Late 2003 trucks with purple clips should use MMTC-DMAX-03

TechSpec Core Thickness (in)

1.25

Install Difficulty

2

TechSpec Chassis Codes

LB7

quick cheap and easy. love it!

I received the tires in a reasonable amount of time. The shipper was listed as FedEx, but the parts were shipped via SAIA. Once I figured this out, I was able to track the parts to my door. This was probably due to the size of tires.

I had a little trouble placing the order initially. The second time was super fast.

So far, so good

Super fast and easy. Great price, discount code, and FREE SHIPPING!!!

great service so far!

The product reviews given are not specific to the item I was interested in ordering. However, my order was processed the same day it was received. One of the two items shipped the same day and the other was shipped the following day. Both items were received within four days from the date ordered. Packaging was sufficient as neither item was damaged. Both items were exactly what was described on the website. Pricing, (including shipping) was better than any other retail or online price that I could find.

It was easy to operate.

the part was in stock and for a good price

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