Mopar V8 Hydraulic Lifter

The COMP CAMS Mopar V8 Hydraulic Lifter (Part Number 822-1) is a high-energy hydraulic flat-tappet lifter engineered for small block Mopar, B-series, and RB-series V8 engines, as well as AMC V8 and inline-six applications. This OEM-compatible lifter delivers reliable valve actuation across naturally aspirated and moderately boosted engine builds, making it a cornerstone component for both restoration projects and performance upgrades seeking dependable hydraulic valve train function.

The lifter features a 0.904-inch outside diameter, a critical dimension that ensures proper fitment in OEM and reproduction valve train assemblies for these engine families. COMP CAMS' high-energy design provides positive valve opening characteristics and maintains consistent oil pressure control throughout the engine's RPM range. The hydraulic mechanism automatically compensates for thermal expansion and component wear, eliminating the need for frequent valve lash adjustments—a significant advantage for street-driven and vintage racing applications where frequent teardowns are impractical. Each lifter is sold individually, allowing builders to replace worn components selectively or establish a complete fresh lifter set.

This lifter is essential for builders restoring original Mopar muscle cars, upgrading tired B-block and RB-block engines in vintage Dodge and Plymouth vehicles, or assembling AMC V8 powerplants with period-correct valve train integrity. It serves both show-quality restorations and functional builds where reliable, maintenance-free hydraulic actuation is preferred over adjustable alternatives. The compact 0.25-pound weight and standard dimensions integrate seamlessly into existing crankcase passages without modification, preserving original engine architecture.