durable and easy to install.Fine workmanship and perfect style.Product Name: Knock Sensor with Harness and GasketManufacturer Part Number: 12601822 213-3521 89060413 12589867Interchange Part Number: 10456603, 12575869, 12589867, 12597415, 12601822, 81045-66030, 917-, 213-3521, MS96587, 89060413COMPATIBILITY: for Escalade Express 1500\/2500\/3500 1500\/2500\/3500 and So On(Complete Matching Models View Vehicle Adaptation)for Corvett 99-04 5.7L (LS1) 99-02Express 1500 \/ 2500 \/ 3500 4.8L 5.3L,6.0L 03-07 4.8L,5.3L, 6.0L 02-06 1500 \/ 2500 4.8L, 4.3L, 6.0L 99-06 3500 4.8L,5.3L, 6.0L 01-06 Classic 1500 \/ 2500 \/ 3500 4.8L,5.3L,6.0L 2007 5.3L 04-05Trailblazer 5.3L 03-05for 5.7L (LS1) 99-02,GTO 2004for Envoy 5.3L 03-05 1500 \/ 2500 4.8L,4.3L,6.0L 99-06 3500 4.8L,5.3L,6.0L 01-06 Classic 1500 \/ 2500 \/ 3500 4.8L,5.3L,6.0L 2007 \/ XL 4.8L,5.3L 00-06for Escalade 4.8L,5.3L,6.0L 02-06Escalade EXT 4.8L,5.3L,6.0L 02-06Escalade ESV 4.8L,5.3L,6.0L 03-06 2005for Bravada 5.3L 03-04for 5.3L 04-05for H2 03-07Material: Metalcolour: As ShownPackage Contents: 2 x Knock Sensor1 x Knock Sensor Harness2 x Intake Manifold GasketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.