Porsche Early Oil Pressure Relief Valve - 944 82-86 RB104-81 PCG-531-003-26-GRV 911 Carrera 4S (2003-2003) and

911 Carrera 4S (2003-2003) and Boxster (1997-2004) models

and 930 (1974-1989) models

The Speed name may ring a bell for some– Lake Speed Jr

ARP head studs are proven and tested for a lifetime of reliability and performance and are required for use with Nickies cylinders

Porsche Caster block mounts for control arm bushings for 944 (1987-1991) and 968 (1992-1995) models

Porsche Early Oil Pressure Relief Valve - 944 82-86 RB104-81 PCG-531-003-26-GRV 911 Carrera 4S (2003-2003) andPorsche Early Oil Pressure Relief Valve For Porsche 944 (1982 1986) Models. NOTE: This is the updated one piece version that replaces the factory three piece valve. Comes complete with valve, alignment tool and crush washer.