Porsche High Performance Valve Spring Set | 1965-1994 SMC-105-901-50 644-521-505-21 Left & right converts engine

Left & right converts engine to latest design oil pressure fed tensioners

the Bentley manual is the ideal resource

Porsche Hose clamp for exhaust system 911 (1975-1983) and 930 (1986-1989) models

have created an archive depicting Porsche® production that captures all of the nuances of each era including the "Outlaw" style '56 Speedster with cast headlamp guards and cap-less wheels

Porsche Great road test book with 400-450 illustrations on 208-220 pages

Porsche High Performance Valve Spring Set | 1965-1994 SMC-105-901-50 644-521-505-21 Left & right converts enginePorsche High performance valve spring spring set for 911 (1965 1989), 912 (1965 1969), 930 (1976 1989), 914 6 (1970 1972), C2, C4 (1989 1994) and 911 Turbo models (1996 1997)