Cir Clip Pinion Retainer

The Cir Clip Pinion Retainer from Quarter Master is a precision-engineered starter component designed for reverse mount and reverse rotation starter applications. This retainer clip secures the starter pinion gear assembly, preventing unwanted movement and ensuring reliable engagement during engine cranking. Built from natural steel, this component is essential for technicians and engine builders who demand dependable starter performance and durability in high-demand applications.

Constructed from hardened steel in a natural (uncoated) finish, the Cir Clip Pinion Retainer provides superior holding strength and corrosion resistance suitable for engine bay environments. The circular clip design (cir clip) creates a secure mechanical lock that maintains pinion gear alignment under the extreme rotational forces typical of engine startup cycles. Quarter Master's precision manufacturing ensures tight tolerances that prevent slippage, vibration-related loosening, and premature wear on the starter system, contributing to extended service life and consistent cranking performance.

This retainer clip is ideal for hot rod builders, engine shops, and restoration specialists working with Quarter Master reverse mount starter assemblies. Installation is straightforward—the clip fits into a machined groove on the pinion shaft, requiring no special tools beyond basic assembly expertise. Compatibility is limited to Quarter Master reverse rotation and reverse mount starter systems (MPN 114030), making verification with your starter assembly documentation essential before purchase to ensure proper fit and function.