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Upgrade your 2011-2014 LML Duramax with our premium transmission cooler line set. This comprehensive kit is designed to replace worn or leaking stock lines, ensuring optimal performance and durability.
- Increased Flow: 5/8" diameter hoses for improved fluid circulation.
- Enhanced Protection: Explosion-proof polyester hose sleeves safeguard against damage.
- Peace of Mind: Backed by a 1-year limited parts warranty.
Kit Includes:
- 3x 5/8" ID transmission lines with AN fittings
- 6x 7/8"-14 O-ring to -10AN fittings
- 2x Large OD washers
- Double hose clamps, locking cable ties, and fir tree cable clamps
Note: Not compatible with Cab and Chassis applications.

Upgrade your 2011-2014 LML Duramax with our premium transmission cooler line set. This comprehensive kit is designed to replace worn or leaking stock lines, ensuring optimal performance and durability.
Increased Flow: 5/8" diameter hoses for improved fluid circulation.
Enhanced Protection: Explosion-proof polyester hose sleeves safeguard against damage.
Peace of Mind: Backed by a 1-year limited parts warranty.
Kit Includes:
3x 5/8" ID transmission lines with AN fittings
6x 7/8"-14 O-ring to -10AN fittings
2x Large OD washers
Double hose clamps, locking cable ties, and fir tree cable clamps
Note: Not compatible with Cab and Chassis applications.[...]
Upgrade your 2011-2014 LML Duramax with our premium transmission cooler line set. This comprehensive kit is designed to replace worn or leaking stock lines, ensuring optimal performance and durability.
- Increased Flow: 5/8" diameter hoses for improved fluid circulation.
- Enhanced Protection: Explosion-proof polyester hose sleeves safeguard against damage.
- Peace of Mind: Backed by a 1-year limited parts warranty.
Kit Includes:
- 3x 5/8" ID transmission lines with AN fittings
- 6x 7/8"-14 O-ring to -10AN fittings
- 2x Large OD washers
- Double hose clamps, locking cable ties, and fir tree cable clamps
Note: Not compatible with Cab and Chassis applications.