Part Number Fitment:234-4112, 234-4337, 234-4018 Type:4-wire Product fit:Direct Fit Position: Upstream Left and Upstream Right Downstream Left and Downstream Right Fitment: for 2007 Escalade Base - 6.2L 2007 Escalade ESV Base - 6.2L for 2006 1500 - 4.8L 2006 1500 - 4.8L 2006 1500 - 4.8L 2006 Base - 4.8L 2006 - 4.8L 2007 - 5.3L 2007 - 5.3L 2007 - 6.0L 2007 - 5.3L 2007 1500 Classic - 4.3L 2007 1500 - 4.3L 2007 - 4.8L 2007 - 5.3L for 2007 1500 Classic SL - 4.3L 2007 1500 Classic - 4.3L 2007 1500 Classic - 4.8L Classic Body Style 2007 1500 - 4.8L Classic Body Style 2007 1500 - 4.3L 2007 - 6.2L 2007 - 4.8L 2007 - 5.3L 2007 XL 1500 - 6.2L 2007 XL 1500 - 5.3L 2007 XL 1500 - 6.0L 2007 XL 1500 - 5.3L 2007 XL 2500 - 6.0L 2007 XL 2500 - 6.0L 2006 1500 SL - 4.8L 2006 1500 - 4.8L 2006 1500 - 4.8L 2006 SL - 4.8L 2006 - 4.8L Colour:As Shown Material:Metal+ABS Package Contents: 2 x Upstream Oxygen Sensor 2 x Downstream Oxygen Sensor Only 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.