Top 10 Locking Fuel Cap Diesel – Automotive Replacement Fuel Tank Caps

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1. Stant

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Green, Stant Diesel Only Locking Fuel Cap

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Stant #ad - Unlike other aftermarket fuel caps, Stant fuel caps include all of the safety features found on the original equipment cap. Comes with 2 keys. Fit type: Vehicle Specific. Durable locking fuel cap made for a long lasting life. Customer safety is an important feature of Stant products.
BrandStant #ad
ManufacturerStant #ad
Height3.6 Inches
Length3.8 Inches
Weight0.24 Pounds
Width3.1 Inches
Part Number10591D
Model10591D

2. Stant

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Stant Saddle Tank Locking Fuel Cap for Ford L-Class Heavy Duty Trucks 1990-1998

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Stant #ad - Fit type: Vehicle Specific. Comes with 2 keys. Customer safety is an important feature of stant products. Unlike other aftermarket fuel caps, stant fuel caps include all of the safety features found on the original equipment cap. Heavy duty locking fuel cap made for a long lasting life.
BrandStant #ad
ManufacturerStant #ad
Height3.5 Inches
Length3.5 Inches
Weight0.69 Pounds
Width3 Inches
Part Number10413
Model10413

3. Flow Security Systems

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Flow Security Systems | VersaLock | Vented Locking Fuel Tank Cap | For Transfer Tanks & Above Ground Commercial Tanks | Prevents Theft & Secures Fuel Tanks | Includes Adapter | FSS 754

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Flow Security Systems #ad - The versa lock utilizes the patented free spinning design, perfect for all business owners who want to secure their transfer fuel tanks. But if you prefer a different key, that option is also available. Prevent unauthorized use: the flow security systems pre-vent fuel cap is a quick and inexpensive way to safeguard costly fuel and oil from theft, tampering, siphoning and vandalism.

The versalock has weather proof self-closing latch covering the face of the lock to prevent dust, dirt, debris and moisture from entering the lock. Pressure vent valve allows pressure relief valve to open at 1. 5 lbs and vacuum release to open at 1. 5 oz. Built in valve: the fss-754 uses built in valves to equalize the pressure and vacuum. Keyed differently or the same: the versa lock can be keyed alike so that multiple fuel caps can be secured with the convenience of having only one key.

This heavy duty lock is make from hard non ferrous alloy and fits standard 2 inch male thread. When the cap is in the secure mode the cap will free spin making it virtually impossible to remove. Perfect for those who have multiple transfer tanks and don't have to carry different keys for each tank. It is designed with our patented "free-spinning" technology.
BrandFlow Security Systems #ad
ManufacturerFlow Security Systems, Inc. #ad
Height2 Inches
Length2 Inches
Width2 Inches
Part NumberFSS754+adp
ModelFSS754+adp

4. Stant

#ad

Stant Diesel Only Locking Fuel Cap, Green

#ad
Stant #ad - Fit type: Vehicle Specific. Customer safety is an important feature of Stant products. Durable locking fuel cap made for a long lasting life. Comes with 2 keys. Unlike other aftermarket fuel caps, Stant fuel caps include all of the safety features found on the original equipment cap.
BrandStant #ad
ManufacturerStant #ad
Height3.6 Inches
Length3.7 Inches
Weight0.24 Pounds
Width3.1 Inches
Part Number10510D
Model10510D

5. Fuel Tank Accessories

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Fuel Tank Accessories 2 3/8" Locking Diesel Fuel Cap for Freightliner M2 Small Semi Box Trucks

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Fuel Tank Accessories #ad - Locking 8. 00 chain & 6. 50 bail with "Diesel Fuel Only". Sold individually. Includes 1 locking Gas Caps and 1 Set of Keys. Cap assembly aluminum Inside Diameter 2 3/8". Keys will match if bought in pairs. Made for smaller Box/Day Trucks.
BrandFuel Tank Accessories #ad
ManufacturerFuel Tank Accessories #ad
Weight1 Pounds
Part NumberFTAC13

6. Gates

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Gates 31836 Locking Fuel Tank Cap, Yellow

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Gates #ad - The package height of the product is 2. 72 inches. The package length of the product is 6. 02 inches. The package width of the product is 4. 41 inches. Country of origin : china. Fit type: Vehicle Specific.
BrandGates #ad
ManufacturerGates #ad
Height0 Inches
Length0 Inches
Weight0.19 Pounds
Width0 Inches
Part Number31836
Model31836
WarrantyPlease contact retailer/seller for assistance

7. Gates

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Gates 31778 Locking Fuel Tank Cap

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Gates #ad - Comes with 2 Keys. Two-way action pressure relief/vacuum relief valve allows the fuel tank to breathe while preventing the escape of fuel fumes. Seals are compounded from fuel-resistant rubber. Lock opens with 1/4 Turn of Key. Locking mechanism Deters Fuel Theft & Vandalism.
BrandGates #ad
Manufacturernobrandname #ad
Height3 Inches
Length3 Inches
Weight0.02 Pounds
Width3 Inches
Part Number31778
Model31778

8. MotoRad

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MotoRad MGC-791SK Locking Fuel Cap

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MotoRad #ad - Manufactured with OEM quality materials and safety standards. Deters vandalism and fuel theft. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. Fit type: Vehicle Specific. Keyed alike. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
BrandMotoRad #ad
ManufacturerMotoRad #ad
Height5.25 Inches
Length3.5 Inches
Weight0.46 Pounds
Width3.5 Inches
Part NumberMGC-791SK
ModelMGC-791SK
Warrantycontact manufacturer

9. Road King Truck Parts

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Keyed Alike, Road King Truck Parts Pair of 4" Lever Style Locking Diesel Fuel Caps for Peterbilt

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Road King Truck Parts #ad - Caps are male fitting and do not contain threads, caps are not vented, caps contain pressure relief. Includes rubber o ring and 13” safety chain with 7” bail. Designed to fit peterbilt trucks with 4” diameter fuel filler neck. Supplied with 2 matching keys each keys are not available separately. Made of heavy-duty die cast aluminum.
BrandRoad King Truck Parts #ad
ManufacturerFasttech International Co., Ltd. #ad
Height2.4 Inches
Length4.4 Inches
Width4.4 Inches
Part NumberRK-6004021
ModelRK-6004021

10. Stant

#ad

Stant Diesel Only Locking Fuel Cap, Green

#ad
Stant #ad - Customer safety is an important feature of Stant products. Fit type: Vehicle Specific. Comes with 2 keys. Durable locking fuel cap made for a long lasting life. Unlike other aftermarket fuel caps, Stant fuel caps include all of the safety features found on the original equipment cap.
BrandStant #ad
ManufacturerStant #ad
Height3.6 Inches
Length3.8 Inches
Weight0.24 Pounds
Width3.1 Inches
Part Number10508D
Model10508D