u瞳秤 "Relief valve"
MG: MGB with D-type Overdrive to November 1967 - Roadster to GHN3-138360, GT to GHD3-137795
Triumph: Spitfire MK3 and MK4 to chassis no. FH60000 and FM10000 (January 1967 to August 1973) ? Vitesse (1962-71) ? GT6 (1966-73)
Volvo: PV444 (1947-58) ? PV544 (1958-65) ? Amazon (1956-70) ? P1800S, P1800E and P1800ES (1963-73)
D-type overdrive