With spherical style bearings

1/4-20 threaded

45" models

Nitrogen charged double steel wall body

These lifters are compatible with virtually any engine application

JIMS, POWERGLIDE HYDRAULIC TAPPET. STANDARD .8420" O.D. Baklampan/Taillight With spherical style bearingsJims Powerglide tappets will give you a superior hydraulic function when compared with OEM style equipment, a billet steel body with hand honed hydraulic unitcavity and an oil fed axle. To get full power, you must have zero valve lash and eliminate collapsing of the hydraulic unit as is found in the OEM unit, also called 'the shock absorber syndrome'. Failing to keep the valve open the full amount results in power loss. The Jims Powerglide tappets