Transmission Lines/Cooler Hoses with Allison For 2011-2014 Duramax 6.6L DP0345

Transmission Lines/Cooler Hoses for Allison 2011-2014 Duramax 6.6L DP0345

These transmission cooler lines and hoses route fluid between the transmission and cooler on 2011-2014 Duramax 6.6L trucks with the Allison transmission, replacing worn or leaking originals to keep fluid temperatures in check.

Overview

These transmission lines and cooler hoses are built to carry automatic transmission fluid between the Allison gearbox and the cooling circuit on 2011-2014 Duramax 6.6L applications. They restore proper fluid flow when original lines corrode, crack, or leak at the fittings. A solid choice for owners servicing a high-mileage Duramax drivetrain.

Built For Performance

• Direct-fit routing for 2011-2014 Duramax 6.6L trucks with the Allison transmission
• Constructed to handle pressurized automatic transmission fluid at operating temperature
• Crimped hose ends and metal lines for a secure, leak-resistant connection
• Replaces corroded or damaged factory lines that restrict fluid flow
• Sold as a matched set so both supply and return paths are covered

Fits These Machines

• for 2011 Duramax 6.6L with Allison transmission
• for 2012 Duramax 6.6L with Allison transmission
• for 2013 Duramax 6.6L with Allison transmission
• for 2014 Duramax 6.6L with Allison transmission

On-The-Job Use

• Replacing leaking cooler lines during transmission service
• Restoring fluid circulation on high-mileage tow vehicles
• Fixing rusted or cracked lines on trucks used in northern climates
• Routine maintenance on Duramax work trucks and haulers

Specs At A Glance

Good To Know

Q: Do these lines come as a complete set? A: The listing describes transmission lines and cooler hoses as a matched set. Confirm the quantity included and the exact positions covered before ordering.

Q: Will these fit my Duramax truck? A: Fitment depends on model year, engine, and Allison transmission configuration. Verify your VIN or serial number with the seller before purchase.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.