The filler cap is in the shape of a piston inspired by the forged units in the legendary RB26DETT engine.

The size measures M32XP3.5mm and has been confirmed to work with all Nissan CA/SR and RB engines.

The item will also work with other Nissan Vehicles with the same pitch and enough clearance above the piston.

The items are on special order and normally ship in 3-5 days.