Bolt-on high-performance transmission cooler for 2006–2010 Chevy Silverado and GMC Sierra 2500HD/3500HD equipped with LBZ or LMM Duramax engines. Increases surface area for superior heat rejection to extend transmission fluid and component life.
Key Benefits
- Lowers transmission fluid temps up to 30°F vs stock
- Extends transmission and fluid life, improving longevity and reliability
- Direct bolt-on replacement — no custom plumbing required
Features
- 60% more surface area for improved heat rejection
- Retains use of factory oil lines for simple installation
- Durable construction designed for heavy-duty towing and hauling applications
Fitment
- Vehicles: Chevy Silverado / GMC Sierra 2500HD & 3500HD
- Years: 2006–2010
- Engines: LBZ, LMM Duramax Diesel
Why it matters
Reducing transmission operating temperature reduces wear, prevents premature failures, and saves repair costs — making this cooler a cost-effective upgrade for towing and heavy-duty use.