Crower 87057-1 Features:

Crower chromoly steel valve spring retainer for 5/16 in. valves 7-degree lock style with standard retainer design for dual-spring setups Heat-treated construction with black oxide finish for rust and corrosion resistance Fits 1.000 in. outer spring OD and 0.650 in. middle spring OD

Retainers Chromoly For 5/ 16 In. Valve, 7-Degree, Dual-spring Features:

• Heat-treated chromoly steel construction for high-strength valvetrain durability and reliable spring retention in demanding engine applications.
• 7-degree lock style with standard retainer profile for secure fit on 5/16 in. valve stems and consistent installed geometry.
• Dual-spring compatibility with 1.000 in. outer spring OD and 0.650 in. middle spring OD for matched valvetrain setup.
• Black oxide finish helps resist rust and corrosion while supporting long-term service in performance and racing environments.
• Sold individually; valve locks not included, ideal for replacement, custom builds, or precise valvetrain component selection.