The ARA1501L is a locking ring designed to retain and seal the fuel sender unit within the fuel tank on applicable Land Rover models. It secures the sender unit flange against the tank aperture, preventing fuel leaks and ensuring the sender unit remains correctly seated for accurate fuel level readings. A deteriorated or incorrectly fitted locking ring can result in fuel odour, leaks at the tank, or sender unit movement causing erratic gauge readings. Key Features Locking ring format designed to thread onto the fuel tank aperture and clamp the sender unit seal in place Not compatible with TD5 Defender variants - confirm engine type before fitting Matches original Land Rover specification for direct replacement without modification Inspect the sender unit seal and O-ring simultaneously, as these are commonly replaced together Vehicle Fitment Fits Defender (1986–2006, excluding TD5), Range Rover Classic, and Series 3 109-inch models up to chassis suffix C, all for fuel sender unit applications. Not sure about fitment? Feel free to get in touch at [email protected]