2006–2010 (LBZ / LMM) Performance Allison Transmission CoolerBolt on high performance transmission cooler for 20062010 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 30F vs stock Extends transmission and fluid life, improving longevity and reliability Direct bolt on replacement no custom plumbing required Features 60% more
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