4" Locking Fuel Cap

May be used with Non-Vented Tanks Cap Assy Alum 4.0-8 NPSL,

Full Function Vented, 255°F Thermal W/ Pressure Relief, 12.00” Chain & 8.35” Bail, W/ 'DIESEL ONLY KEEP CLEAN' Numbers on the underside of the cap 90-0482301A1