Best Dorman Transmission Cooling Lines in 2026

Direct replacement - this automatic transmission oil cooler hose assembly is designed to match the fit and function of the original equipment assembly on specified vehicle makes, models and years

Ideal solution - engineered to help ensure proper transmission cooling when the original assembly is leaking or has failed from corrosion, collision, vibration, or fitting damage

Durable construction - made of quality materials for reliable performance and long service life

Quality replacement - this transmission cooler connector matches the fit and function of the original equipment connector

Durable construction - this oil cooler line connector is made of quality materials for a precise fit and leak-free durability

Performance tested - this connector has been rigorously pressure tested to ensure reliable performance

PACKAGE INCLUDE - 2 x 52 inch 3/8 I.D. Stainless Steel Braided Hoses; 4 x AN-6 flared to 1/4 In NPT billet adaptors; 2 x AN-6 flared to 3/8 In NPT billet adaptors; 2 x 90-degree AN-6 inverted flare to AN-6 flare billet adaptors.

COMPATIBILITY - MuHize 52 inch transmission cooler hose fits for TH350 700R4 TH400 coolers of Chevy Ford Mopar GM GMC Buick Cadillac Cars and Trucks.

DURABILITY - This transmission cooling line kit is made of high-strength PTFE(Teflon), which is resistant to high & low temperatures and is anti-corrosion. The precision braided stainless steel on the outside of the hose greatly increases the strength of the tube.

[COMPATIBLE WITH] Compatible with 2006-2010 Chevy GMC 2500 & 3500 applications with the 6.6L LLY LBZ & LMM Duramax diesel engine.

[LONG LIFE-SPAN] Long life-span matters, that is why our Transmission Cooler Lines Hoses is crafted from double steel braided w/abrasion resistant exterior to prevents expansion under high pressure and protects lines against abrasion.

[HIGH TEMPERATURE RESISTANCE] The transmission of the driving vehicle will get warmer, and the temperature will be very high, our Transmission Cooler Lines Hoses with strong resistance to high temperature.

Compatible with: Turbo 350 (Some are 1/4 inch NPT), Turbo 400, Turbo 200 - 200R4, Power Glide (Some are 1/4 inch NPT), 700R4 - 4L60 - 4L60E - 4L65E, 4L80E: 1996 & Newer, fit for Ford C4 - C6 - AOD.

Transmission oil cooler lines kit is made of high-quality 304 stainless steel wrapped with PTFE hose, which has good protection effect, soft, tough and wear-resistant. It is not easy to leak when operating under high pressure.

Package includes: 2 x 70 inch & 3/8 inch I.D. Stainless Steel Braided Hoses; 4 x AN-6 flared to 1/4 inch NPT billet adaptors, 2 x AN-6 flared to 3/8 inch NPT billet adaptors; 4 x 90 degree AN-6 inverted flare to AN-6 flare billet adaptors; 2 x Aluminum 4L80E adapter fittings; 2 x AN-4 hose separator clamp.

Perfect Fit - Designed specifically for 2006-2010 LLY/LBZ/LMM Duramax models for a seamless installation.

Complete Kit - Includes everything you need for a hassle-free installation: 3 high-flow -10AN lines with 90° and 45° fittings, 8 fittings for a variety of connections, washers, and zip ties.

Superior Quality - Our high-strength nylon outer braid prevents expansion under high pressure and protects the line against abrasion, ensuring long-lasting durability.