Autolite 5503 Copper Resistor Automotive Replacement Spark Plugs (4 Pack) Timing Vacuum 2007 -2007 GMC Sierra 1500

2007 -2007 GMC Sierra 1500 Classic

Replacement For Stens Part Number: 255-299

2000 Yz125M1

Whether for restoration projects or performance upgrades

Precision-engineered for smooth trunk operation

Autolite 5503 Copper Resistor Automotive Replacement Spark Plugs (4 Pack) Timing Vacuum 2007 -2007 GMC Sierra 1500Autolite Copper Core Spark Plugs Deliver Quick Starts, Good Fuel Economy, And Smooth Acceleration. The Copper Glass Seal Bonds Insulator And Terminal Post Center Electrode Together To Ensure Full Required Voltage At Spark Gap, Creating A Gas Tight Seal That Is 100 Percent Leak Proof. Copper Core Spark Plugs Feature A Cold Formed Steel Shell And Precision Rolled Threads, And A One Piece Terminal Post That Adds Strength. The Multi Rib Insulator Reduces