Crower 87057-16 Features:

Crower 87057-16 chromoly steel valve spring retainers for 5/16 in. valve stems, engineered for Viper valvetrain applications. 7-degree retainer design supports proper valve lock engagement and must be used with matching 7-degree valve locks. Precision-machined chromoly construction helps deliver valvetrain stability and reliability in high-performance V10 Viper engines. Complete 16-piece set for valvetrain builds or upgrades requiring durable steel retainers for intense operating conditions.

Retainers Chromoly For 5/ 16 7-Degree Steel Retainers Viper Features:

• 7-degree chromoly steel retainers for 5/16 in. valve stems, precision-machined for secure lock fit and consistent installed height in Viper valvetrain applications
• High-strength chromoly construction for improved retainer integrity, reduced deformation risk, and dependable valvetrain control under high-rpm operating loads
• 16-piece set for V10 Viper builds, matched for complete valve coverage and convenient installation during valvetrain service or performance upgrades
• Compatible with 7-degree valve lock systems, promoting proper seating, stable spring retention, and reliable valve spring alignment on 5/16 in. valves
• Engineered for high-performance Viper engines, supporting valvetrain stability, durability, and long-term reliability in demanding street or racing use