SKU: GMP19171528
MPN: 19171528
The Chevrolet Performance Valve Spring Retainers for LT1/LT4 engines represent OEM-spec components engineered for the GM LS-series platform. This set of 16 retainers maintains precise valve train geometry and spring preload under high-RPM operation, critical for engines pushed beyond factory power levels or rebuilt to original performance standards.
Each retainer features a 7-degree taper geometry matched to factory valve stem angles, a 0.640-inch OD step for single-spring configurations, and steel construction for durability under sustained load cycling. These specifications ensure correct spring seat pressure and prevent valve stem wear or float at elevated RPM. The set includes all 16 retainers required for a complete eight-cylinder engine rebuild, eliminating the need to source individual components from multiple suppliers.
LT1 and LT4 builds—whether stock restoration, performance modification, or racing preparation—depend on correct valve train components to maintain timing accuracy and prevent catastrophic valve-to-piston contact. Technicians rebuilding these engines or upgrading valve springs choose OEM Chevrolet Performance retainers to ensure compatibility with factory specifications and avoid the risk of mismatched aftermarket parts. These retainers work with both stock and performance valve spring packages designed for the LS platform.
Sourcing genuine Chevrolet Performance components eliminates guesswork during engine assembly. The LT1/LT4 platform remains popular across performance shops and enthusiasts due to its balance of power potential and parts availability. Having verified retainers on hand prevents delays when building or servicing these engines.
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