The seat rail bushings wear out, causing excessive seat movement. Poor quality OEM bushings in the seat subframe tracks can wear, perish, or disintegrate, leading to increased rail movement. Install our upgraded seat runner bushings to eliminate excess movement. Our bushings are designed to outperform OEM parts and are built to last the lifetime of the vehicle. This is a common issue resolved with our repair kit. Compatible with: BMW Z3 Coupe, all Z3 models, Z3 E36, E37, E38, 1994–2002 Roadster and Coupe, Z3M, M Roadster, M Coupe. Associated part numbers: 52108401291, 52108401292, 52108399593, 52108398812, 52107137499. Color: Silver Material: Rubber Package Contents: 8x bushing Note: Only the items listed are included. Other products are not included. Due to lighting and display differences, the item color may vary slightly from the images. Measurement may vary by +/- 1-3 cm.