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Black Friday Doorbuster Fleece Performance Transmission Cooler Lines For 11-14 Gm 2500/3500 6.6l Duramax With A 95% Price Cut [zENVtwSi]

$47.99 $153.99 -69%

Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your LML truck! With an increased diameter over stock and heavy duty hos

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Black Friday Doorbuster Fleece Performance Transmission Cooler Lines For 11-14 Gm 2500/3500 6.6l Duramax With A 95% Price Cut [zENVtwSi]

Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your LML truck! With an increased diameter over stock and heavy duty hose wrap, these lines will increase overall flow and protect against future failures.

 

Features:

  • Lifetime Warranty
  • Made in the USA!
  • Increased diameter over stock - 5/8" hose
  • Explosion proof polyester hose protection sleeve

 

Fitment:

  • 2011-2014 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax
  • 2011-2014 GMC Sierra 2500HD/3500HD 6.6L Duramax

 

Included:

  • (3) 5/8" ID transmission lines with AN fittings
  • (6) 7/8"-14 O-ring to -10AN fittings
  • (2) Large OD washers
  • Double hose clamps, locking cable ties, and fir tree cable clamps

 

Note:

  • Not for use on Cab and Chassis applications

What Our Customers Say

January 17, 2026

Absolutely no complaints!

This product is a superb find. It's a high-performance item.

- Idris O..

January 17, 2026

Absolutely no complaints!

This product is a great find. It is a pleasure to have and use.

- Joyce X..

January 17, 2026

Absolutely no complaints!

The quality is fantastic and the product is very versatile.

- Lorelai I..

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