INSTALLATION INSTRUCTIONS

The COOLMASTER 49471K is a purpose-built Single Core Transmission Cooler Kit, designed to improve transmission longevity and performance for vehicles equipped with the Duramax 2.8L Turbo Diesel engine and 6-speed 6L50E automatic transmission.

Compatible with the Holden Colorado RG, Colorado 7 RG, and Trailblazer RG, this kit is ideal for everyday use, light towing, and general off-road driving, ensuring transmission fluid temperatures stay in the safe zone under load.

Key Features:

• Single Core Cooler – Compact, efficient, and ideal for most conditions
• Supports 6L50E Transmissions – Matched to GM’s 2.8L Duramax platform
• Direct Fitment for RG-Series Colorado, Trailblazer & Colorado 7
• Includes Rubber Hose Kit, Brackets & Fittings
• Reduces Transmission Overheating – Helps protect against fluid degradation
• Ideal for Work, Touring & Light Towing

The COOLMASTER 49472K is the trusted solution for Jeep JK owners who need reliable transmission cooling performance — whether they’re tackling rocky trails or hauling gear through the outback.