Big Block GX390 and Clone - Keepers - GX390-Predator420-Duromax 440-Wildcat 460-GX500

Steel high groove keeper for 6.5mm valves with single groove for automotive style retainers and keepers. 

Not for use with stock Honda GX390 valves

Sold in sets of four

Works with steel and billet aluminum retainers, but not with titanium retainers. 

Also fits Zongshen GB620 and Duromax 500 engines.