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Transmission Cooler Lines 21101404 For GM 6.6L LLY Duramax LB7 2001-2005
Manufacturer Part Number: 21101404
Features: Heavy Duty，1/2” Inner Diameter & 3045 PSI hydraulic pipe;
Type:Cooler Line
Fitment Type:Direct Replacement
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Fitment:
For Chevy/GMC 6.6L Duramax Diesel LB7/LLY ONLY 2001- 2005. (6.6L LBZ/LMM Duramax Diesel (w/ Allison Transmission ONLY))
Transmission Cooler Lines 21101404 For GM 6.6L LLY Duramax LB7 2001-2005
Perfect Fitment for Chevy/ for GMC 2001-2005 Duramax Diesel Trucks: Engineered specifically for Chevy Silverado 2500HD 2001-2005, for Chevy Silverado 3500 2001-2005, for GMC Sierra 2500HD, and for GMC Sierra 3500 2001-2005 with 6.6L Duramax LB7/LLY diesel engines, ensuring seamless installation and optimal performance.
Transmission Cooler Lines 21101404 For GM 6.6L LLY Duramax LB7 2001-2005
Direct Replacement for OEM Part Number 21101404: This transmission cooler line is a direct replacement for the OEM part number 21101404, making it an ideal solution for restoring the cooling system in your Duramax-powered truck without any modifications.
Ideal for 6.6L Duramax LB7/LLY Diesel Engines Only: Please note that this cooler line is ONLY compatible with the 6.6L Duramax LB7 and LLY diesel engine versions, ensuring proper fitment and function exclusively for these specific engine models.
Made from good materials, these transmission cooler lines are engineered to provide long-lasting reliability, protecting your transmission and ensuring efficient cooling for optimal engine performance.
Transmission Cooler Lines 21101404 For GM 6.6L LLY Duramax LB7 2001-2005
Designed for direct replacement without the need for special tools or modifications, this cooler line is quick to install, making it a hassle-free solution for maintenance and repairs.
The kit includes one transmission cooler line, providing everything needed for a smooth replacement process and ensuring your vehicle’s cooling system is back to full functionality.
Features: Heavy Duty，1/2” Inner Diameter & 3045 PSI hydraulic pipe;
Type: Cooler Line.
Fitment Type: Direct Replacement.
Thomas
Reviewed in the United States on March 3, 2025
Nice kit except one cooler line was about 6” to short and had a 45* on one end instead of a straight. And no sealing washers to connect to the radiator. Thanks to KB diesel performance for the washers $15.95 + tax. They’re gonna tell me I used the wrong hoses in the wrong position.. trust me I tried the hoses in every possible position!
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