A valve collet, also known as a valve keeper or split collet, is a small two-piece tapered retaining clip that locks the valve spring retainer onto the valve stem, securing the valve assembly within the cylinder head. If collets wear, crack, or seat incorrectly, the valve can drop into the combustion chamber, causing catastrophic engine damage. Correct replacement collets must match the stem groove profile precisely to maintain proper valve spring tension and seating. Key Features Machined to exact taper and groove dimensions to match the original valve stem specification Must be installed in matched pairs per valve; verify correct seating before reassembly OEM-specification part sourced to Land Rover fitment requirements under SKU 268293 Inspect valve stems, spring retainers, and springs for wear when replacing collets; parts are typically replaced as a set during valve or head work Vehicle Fitment Please refer to the part title and your vehicle's workshop manual to confirm fitment compatibility for this collet prior to ordering. Not sure about fitment? Feel free to get in touch at [email protected]