Bostech EGR354 Remanufactured EGR Cooler Kit GM 6.6L Duramax LMM Van

The Bostech EGR354 is a remanufactured Exhaust Gas Recirculation (EGR) cooler kit designed as a direct-fit replacement for the GM 6.6L Duramax LMM engine in van applications. The EGR cooler reduces exhaust gas temperatures before recirculated gases re-enter the intake manifold, lowering peak combustion temperatures and reducing harmful NOx emissions.

Bostech engineers this cooler using an all-new 304 stainless steel tubing heat exchanger core, addressing a primary failure point of the factory unit. The stainless steel construction provides superior resistance to the extreme thermal cycling demands of the Duramax exhaust system. Each unit undergoes multi-point pressure testing during production as well as end-of-line pressure and fitment testing to ensure reliable, leak-free performance.

Key Features:

• Remanufactured EGR cooler with all-new stainless steel internal tubing
• 304 stainless steel core for improved heat transfer and corrosion resistance
• Direct-fit, ready-to-install design — no modifications required
• Gasket kit included for a complete installation
• Multi-point and end-of-line pressure tested for quality assurance
• Backed by a 24-month unlimited mileage warranty against material and workmanship defects
• Proudly manufactured in the USA

A core charge applies to this remanufactured unit. Return your original, undamaged EGR cooler core to receive a core credit. All returned cores must be intact, matching units with no missing parts. An RMA number is required for all core returns.

This EGR cooler is not CARB certified — please verify state and local regulations before ordering.