BlackPath - (4x) Universal Fit Oxygen Sensor Extension [Straight] O2 Sensor Spacers M18 x 1.5 CEL Fix Kit Fits: All vehicles and exhaust systems with M18 x 1.5 oxygen sensor holes FOR OFF-ROAD AND RACING USE ONLY Includes [(4x) Straight] Oxygen O2 Sensor Spacer Adapter Extenders Quick and easy installation to remove check engine light Backed by a Lifetime Warranty and our 100% Satisfaction Guarantee [(4x) Straight] Oxygen O2 Sensor Spacer Adapter Extender Hardware w/ Installation Notes (1x) Drive Your Way Keychain Tag