Fuel Safe Standard Fill Cap - 2.5" 121017 is 5" x 9"

is 5" x 9"

brass safety valve

090" aluminum for light weight and excellent strength

Hydraulic - Magnum: Great for street machines

Universal design fits 5 on 4-1/2"

Fuel Safe Standard Fill Cap - 2.5" 121017 is 5" x 9"2. 5" Fill Cap Threaded Non Vented (Fits FN250 & FN250A) Fuel Safe Fuel Cells have provided the safest, most dependable racing fuel cells for decades. From the high banks of Daytona to the low groove at Knoxville, Fuel Safe Fuel Cells have provided the safest, most dependable fuel cells and accessories for championship winning teams and drivers around the world. Regardless of your type of racing, Fuel Safe Systems will provide you with the best Fuel