Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line Kit

Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line Kit

Marsoni

M251S

$174.97

Get it in 3 business days with 1 day shipping. Friday, May 29

Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line KitSKU: MMTCL DMAX 01 UPC: 811580036088 Mishimoto 01 05 Chevrolet GMC 6. 6L Duramax (LB7 LLY) Transmission Cooler Line Kit Power your 2001 2005 Chevrolet Silverado 2500HD 3500 or GMC Sierra 2500HD 3500 with LB7 LLY Duramax engines to the wheels without transmission heat buildup. This Mishimoto kit replaces stock lines with high performance alternatives that ensure fluid reaches your upgraded cooler efficiently. Constructed for harsh conditions these

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These are quite nice and also sturdy. Only complaint I have is that I bought a couple of these, and on one of them, only one of them, it was difficult to get the hidden mounts to go into the holes. I think it was probably a manufacturing defect thing. Also, on that particular one, it wasnt as level as the other. Not a show stopper, but if you need a perfectly level type of mounting situation, I would be careful here.

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Reviewed in the United States on September 14, 2025

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NatKenneally

Battle Creek, US

★★★★★ 5

Great value/easy to install.

Size: 24x6 2Pcs, Color: Black, Size: 24x6 2Pcs, Color: Black

Great product and great value. Easy to install and adds a nice touch to a bathroom.

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Reviewed in the United States on March 21, 2026

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