Shift Detent Spring Retainer

The Sonnax 28116 Shift Detent Spring Retainer is an essential component crafted for GM Powerglide transmissions to ensure precise gear engagement. Engineered to hold the shift detent spring securely in place, this hardened steel retainer preserves consistent tension against the detent lever, often called the "rooster comb", which is vital for achieving crisp, accurate shift feel and avoiding false detents.

Sonnax’s 28116 retainer serves as the go-to replacement, delivering reliable performance in both everyday driving and high-demand, high-mileage applications. Its robust construction endures repeated load cycles without deforming or losing retention, helping to maintain smooth shift lever movement and transmission longevity. Whether you're completing a full rebuild or simply restoring shifter precision, the 28116 retainer offers a straightforward, durable upgrade that improves both function and peace of mind.