Out of stock
SKU: PGEB4.1V6C
MPN: B4.1V6C
The Center Main Caps - Buick 3.8-4.1 V6 2-Bolt from PRO-GRAM ENGINEERING are precision-engineered billet steel components designed specifically for Buick V6 applications. These main caps play a crucial role in supporting the main bearings of the engine, ensuring stability and reliability in both high-performance and daily-driven builds.
Manufactured from high-strength billet steel, the Center Main Caps feature a straight 2-bolt fastening geometry that distributes clamping force evenly across the main bearing surface. This precision-machined design ensures zero runout and consistent bolt torque retention, which is critical for preventing fastener loosening during extended operation.
Professionals restoring or building Buick 3.8L and 4.1L V6 engines—whether for classic vehicle restorations, performance upgrades, or fleet maintenance—will find these center main caps essential for achieving reliable engine performance. Installation requires standard socket wrench tools and follows factory specifications for optimal results.
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