Big Block GX390 and Clone - Keepers - GX390-Predator420-Duromax 440-Wildcat460-GX500

Steel high groove keeper for 6.5mm valves with groove to accept automotive style valve retainers and keepers. 

Sold in Pairs - You will need two pairs for each engine.

Works with our billet aluminum retainers and 65lb dual springs. 

Also fits Zongshen GB620 engines.