Howards 93321 ultimate valve seals, set of 16. There are for 3/8" diameter valve stems and .531" valve guide diameter. Fits most aluminum head applications with 3/8" valves. Space age DuPont fluoropolymer material, alcohol and nitromethane tolerant. Controlled radial tension during changing temperatures. Design allows very small amount of oil for guide/stem lubrication. Great to remove that smoke upon startup due to leaking valve seals.  These are for single or duel springs applications. Will not fit stock iron heads unless the guides are machined to .531" to fit seals. 

Also fits other engines with 3/8" valve stems and .531" valve guides. This is for a set of 16 valve seals, for a V-8 engine applications. Fast and Free shipping.

BE SURE THESE WILL FIT YOUR VALVE GUIDE (.531") AND 3/8 DIAMETER VALVE STEMS.

NO RETURNS.