Shop › Adjustable Oil Pressure Regulator Kit, Each Image 1 of 1 Adjustable Oil Pressure Regulator Kit, Each $19.95 Allows you to adjust the oil pressure with the twist of a wrench. Use with stock pressure regulator spring. Add To Cart Added! Allows you to adjust the oil pressure with the twist of a wrench. Use with stock pressure regulator spring. C=398-9198-0 You Might Also Like Heater Hose Connector Pipe to Stock Muffler Pair $7.95 Seal, Oil Filler Tube, Type 1 50-74, Ghia 56-74, Type 2 50-71, Ea $2.95 Cylinder Deflector Tin, For 10mm Studs, Zinc Plated 1500-1600cc $2.95 Retainer Buttons, Fits Mahle and AA, Set of 8 $32.95 Piston Ring Set Cast Top Ring, 85.5mm, 1600cc (2 x 2 x 5mm) (Ref. P/N: 311 198 169A) $34.95