BD Diesel Upgraded Exhaust Manifold Kit for Select 1999-2020 GM Truck & SUV LS Engines (Pair)

Fits select 1999-2020 Cadillac, Chevrolet, and GMC trucks and SUVs including Silverado, Sierra, Tahoe, Yukon, Suburban, and Express with LS-based engines.

The BD Diesel Upgraded Exhaust Manifold Kit (MPN 1041400) provides a heavy-duty solution for the common failure of OE exhaust manifold bolts. Engineered with a significantly thicker wall design and cast from high-silicon ductile iron, these manifolds are built to resist the thermal warping and cracking common in factory units. To address fastener stress, the kit utilizes 15mm longer bolts and precision-machined spacers that allow for thermal expansion without snapping the bolt heads. This kit includes both driver and passenger side manifolds, gaskets, and all necessary hardware for a complete installation.

• Constructed from high-silicon ductile iron to prevent warping and stress risers
• 15mm longer bolts and spacers reduce fatigue on fasteners during heat cycles
• Uniformly increased wall thickness for superior durability and crack resistance
• Machined bolt mating surfaces ensure a secure, leak-free joint
• Includes heat shield mounting bosses in optimized locations
• Kit includes both manifolds, gaskets, spacers, and fasteners
• SEMA Certification No. SC-BDD01-0136
• Also available individually: Passenger Side (PN 1041401) or Driver Side (PN 1041402)