Newly upgraded Locking Fuel Gas Cap 3 1/2" Course Thread 5.5 TPI Vented Semi Truck 3In-5.5 TPI Compatible with Kenworth Peterbilt Freightliner Western Star 572.1036, SNV 431089 2 Keys (2PCS)

Locking Fuel Tank Cap: Compatible with Peterbilt before 1980, Freightliner before 1984, Western Star before 1983, Kenworth after 1984, Diesel only, Manufacturer Part Number: 572.1036, SNV431089 Fuel Tank Cap Specifications: Fuel tank locking cap for semi truck with 3 1/2" Male Pipe Filler Neck Size, TPI 5.5 Tank Port, Special Thread Diameter 3.5", Female Thread Fitting Premium Aluminum: The diesel fuel cap lock features an aluminum construction for durability and stability against vandalism attempts. Locking fuel tank cap with vent and pressure relief gas cap to regulate internal pressure in the fuel system and improve overall safety Prevent Diesel Leakage: The locking diesel fuel cap has a rubber seal, installing a sealed gas cap will improve efficiency and ensure that the fuel tank does not leak, ill-fitting locking gas cap can cost your truck up to 30 million gallons of gasoline each year Fuel Tank Cap with Lock: The locking gas caps for trucks adopts high quality lock cylinder and two matching keys to prevent diesel theft. 7" safety chain, lifting ring and steel crossbar keep the fuel cap attached to the fuel tank without worrying about losing or falling off when refueling