0.04 Inches

8 Pc NGK V-Power Spark Plugs Compatible with Chevrolet Silverado 1500 4.8L 5.3L 6.0L 6.2L V8 1999-2013. Compatible with Chevrolet Silverado 1500 1999 – 4.8L V8;Gap 0.040″. Compatible with Chevrolet Silverado 1500 1999 – 5.3L V8;Gap 0.040″.