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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1. Instant Visual Impact The biggest "wow" factor is how quickly it transforms chalky, sun-bleached gray trim back to a rich, factory-new black. It works exceptionally well on bumpers, window seals, side-view mirrors, and even windshield wiper arms. 2. Ease of Use Unlike professional ceramic trim restorers that require surgical-level surface prep, this is a simple "massage in, buff off" liquid. Massage it in: Use a microfiber or foam applicator to work the product into the pores of the plastic. Buff it dry: This step is crucial to prevent the "streaking" that some users complain about after a rainstorm. 3. Deep Cleaning Ability A unique feature of this formula is its ability to remove white wax stains. If you’ve ever accidentally gotten car wax on your black plastic trim, you know it's nearly impossible to remove—this restorer dissolves those stubborn white marks effectively.

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Reviewed in the United States on January 24, 2026

Verified Purchase

Stefano V

Bozeman, US

★★★★★ 4

It works.

Style: Trim & Plastic Restorer, 12 fl. oz.

Best product for restoration I've found so far.

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Reviewed in the United States on May 23, 2026

Verified Purchase

S. Bateman

West Palm Beach, US

★★★★★ 5

A Really Good Product

Style: Trim & Plastic Restorer, 12 fl. oz.

This is the best black vinyl restorer I've used. Some products don't dry completely and run with the first rain, leaving streaks that are unsightly. It restore blackness that lasts.

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Reviewed in the United States on May 24, 2026

Verified Purchase

Patti

Belleville, US

★★★★★ 5

Great product

Style: Trim & Plastic Restorer, 12 fl. oz., Style: Trim & Plastic Restorer, 12 fl. oz.

This makes my 15 year-old car look brand new… And in my experience, it lasts for several months before it needs re-application. Super easy… Just make sure the car surface is very clean and very dry and there won’t be any rain within a day or so.

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Reviewed in the United States on April 27, 2026