ATS Stage 4 Transmission Package 04.5-05 6.6L GM Duramax LLY RL-88-33110 and 125% greater fin surface

and 125% greater fin surface area than the stock 2006–2010 Duramax transmission cooler

5% Full Span over temperature range of -20C to 85C and +-2

check out this new direct replacement from Industrial Injection

Whether its time to replace the engine in your 2nd Gen 24 Valve Cummins

With a 4" inlet x 6" outlet and 9" inch length

ATS Stage 4 Transmission Package 04.5-05 6.6L GM Duramax LLY RL-88-33110 and 125% greater fin surfaceThe Allison 1000 has no doubt proven itself since its mating in 2001 behind the first Duramax equipped GM trucks. Its longevity, even when pushed with moderately heavy loads and higher horsepower have put it at the forefront of transmissions until recently. However, as miles and horsepower accumulate, these transmissions will find their failure points, and ATS has the cure to ensure your horsepower is getting to the ground efficiently. By increasing