BRAKE PROPORTIONING VALVE KNOB ADJUSTABLE PFE386 300 to 400 series AF4250-5049 & AF4250-5055 Automatic Starter

AF4250-5049 & AF4250-5055 Automatic Starter Motors Only

They have two AN6 ORB ports on the bottom and come with both barbed and AN6 straight fittings

composition

Grey Silicone

- GM LS Series Engines

BRAKE PROPORTIONING VALVE KNOB ADJUSTABLE PFE386 300 to 400 series AF4250-5049 & AF4250-5055 Automatic StarterPart Number : PFE386 BRAKE PROPORTIONING VALVE KNOB ADJUSTABLE PFE386 Proflow brake proportioning valves are adjustable between 100 and 3,000 psi (depending on model) with a twist of a knob or the flip of a lever, and most can reduce pressure up to 57 percent. They let you adjust brake bias quickly and easily to compensate for changing track conditions, or for big and little tire combinations.