Cummins 6BT / 4BT Oil Pressure Regulator and Relief Valve Kit

1 x Oil pressure regulator Plunger

1 x oil pressure regulator spring

1 x oil pressure regulator cap and O ring

1 x oil pressure relief

Low oil Pressure, check your regulator spring , also check your plunger for signs of galling or wear – could stick open causing low oil pressure

Pressure relief reduces flow to oil filter when pressure too high – can lower oil pressure when spring loses tension

Replace all these parts together to ensure healthy oil pressure in your 4bt / 6bt