Fuel Caps

Fuel Caps: sealing the tank and finishing the look

A fuel cap does two plain jobs. It seals the filler neck so fuel and vapor stay where they belong, and on a locking design it keeps the wrong hands out of your tank. On motorcycles and older bikes the cap is also a visible piece of hardware sitting right on top of the tank, so a lot of buyers here are chasing both a proper seal and a finished look. Whether you are replacing a worn OEM cap, adding a lock, or swapping to billet, the fuel caps below cover the common reasons someone pulls the old one off.

What ThreePiece stocks

There are 13 fuel caps in stock right now, spread across 7 brands: Kuryakyn, SPARCO, Bikers Choice, Fleece Performance, Performance Machine, Titan Fuel Tanks and Banks Power. Prices run from $57 to $225 for what is currently on the shelf, so this is the live range rather than a fixed promise.

The mix leans two ways. Motorcycle caps come from Kuryakyn, Bikers Choice and Performance Machine, like the Kuryakyn Flush Mount Pop Up Gas Cap in chrome, the Bikers Choice dual-cap chrome pop-up billet set, and the Performance Machine Apex cap in Black Ops. The car and truck side includes SPARCO's locking brushed aluminum cap and its non-locking counterpart, plus the Banks Power Revolver billet diesel and DEF cap for the 19-23 RAM 1500 3.0L.

How to choose

Start with the split every buyer here faces: locking or non-locking. The two SPARCO caps are the clearest example - same brushed aluminum family, one with a lock for security and one without for simplicity and a lower price. If you park in public or run a shared lot, the locking version earns its keep.

Next is the vehicle type. Bike caps like the Kuryakyn and Performance Machine pieces are chosen mostly on finish and mount style; the truck-side caps like the Banks Power Revolver are chosen on fitment first. Diesel owners also need to mind DEF versus fuel filler - that Banks cap is built for the diesel and DEF application on the RAM it lists. Finish is the last call: chrome, brushed, or black, matched to the rest of your hardware.

Fitment

Only one product in this set carries specific fitment data, and it covers Dodge, with the Dodge Cummins named across a 2013-2018 year range. Product names also reference Dodge and Ram. Most caps here are sold on thread or mount style rather than a vehicle list, so confirm your filler before ordering. If you are unsure, use the fitment calculator or call fitment help at 813-535-5801.

What else to look at

Fuel caps sit in the Exterior section alongside plenty of finishing parts. If you are dressing a truck, check Mud Flaps and Tow Hooks, or the broader Truck and SUV range. Bike builders often pair a cap with new Handlebars or Mirrors.

Ordering

Every order ships free, and Affirm and Katapult financing is available at checkout. Questions on a specific cap? Reach us through contact.

Fuel Caps: sealing the tank and finishing the look

A fuel cap does two plain jobs. It seals the filler neck so fuel and vapor stay where they belong, and on a locking design it keeps the wrong hands out of your tank. On motorcycles and older bikes the cap is also a visible piece of hardware sitting right on top of the tank, so a lot of buyers here are chasing both a proper seal and a finished look. Whether you are replacing a worn OEM cap, adding a lock, or swapping to billet, the fuel caps below cover the common reasons someone pulls the old one off.

What ThreePiece stocks

There are 13 fuel caps in stock right now, spread across 7 brands: Kuryakyn, SPARCO, Bikers Choice, Fleece Performance, Performance Machine, Titan Fuel Tanks and Banks Power. Prices run from $57 to $225 for what is currently on the shelf, so this is the live range rather than a fixed promise.

The mix leans two ways. Motorcycle caps come from Kuryakyn, Bikers Choice and Performance Machine, like the Kuryakyn Flush Mount Pop Up Gas Cap in chrome, the Bikers Choice dual-cap chrome pop-up billet set, and the Performance Machine Apex cap in Black Ops. The car and truck side includes SPARCO's locking brushed aluminum cap and its non-locking counterpart, plus the Banks Power Revolver billet diesel and DEF cap for the 19-23 RAM 1500 3.0L.

How to choose

Start with the split every buyer here faces: locking or non-locking. The two SPARCO caps are the clearest example - same brushed aluminum family, one with a lock for security and one without for simplicity and a lower price. If you park in public or run a shared lot, the locking version earns its keep.

Next is the vehicle type. Bike caps like the Kuryakyn and Performance Machine pieces are chosen mostly on finish and mount style; the truck-side caps like the Banks Power Revolver are chosen on fitment first. Diesel owners also need to mind DEF versus fuel filler - that Banks cap is built for the diesel and DEF application on the RAM it lists. Finish is the last call: chrome, brushed, or black, matched to the rest of your hardware.

Fitment

Only one product in this set carries specific fitment data, and it covers Dodge, with the Dodge Cummins named across a 2013-2018 year range. Product names also reference Dodge and Ram. Most caps here are sold on thread or mount style rather than a vehicle list, so confirm your filler before ordering. If you are unsure, use the fitment calculator or call fitment help at 813-535-5801.

What else to look at

Fuel caps sit in the Exterior section alongside plenty of finishing parts. If you are dressing a truck, check Mud Flaps and Tow Hooks, or the broader Truck and SUV range. Bike builders often pair a cap with new Handlebars or Mirrors.

Ordering

Every order ships free, and Affirm and Katapult financing is available at checkout. Questions on a specific cap? Reach us through contact.