Stainless. With +1/8″ oversized head. Direct OEM style replacement for 1:6 high compression WLDR racing models. Will also fit regular WL models. Use with 971198 WLDR 1:6 high compression cylinder heads and 971250 WLDR camshaft set for maximum performance in WL models. Repl. 163-32T.
WLDR intake valve, + 1/8"