Taylor Spiro-Pro Spiral Core 8 mm Spark Plug Wire Set - Red - 90 Degree Plug Boots - HEI / Socket Style - Cut-To-Fit - 4-Cylinder H771003XL Works with all AutoMeter and

Works with all AutoMeter and Autopage tachometers

Performer Vortec V6

2007-2010 Silverado & Sierra 2500/3500 (Excludes 2007 Classic & Flareside Models)Vehicle Applications: 2007-2013 Silverado & Sierra 1500

3-1/4 in to 4 in ID

The holes are compatible to Penske M

Taylor Spiro-Pro Spiral Core 8 mm Spark Plug Wire Set - Red - 90 Degree Plug Boots - HEI / Socket Style - Cut-To-Fit - 4-Cylinder H771003XL Works with all AutoMeter andAvailable For Street Or Track Applications Spiro Wound With Stainless Steel Wire Covered With A Conductive Fluorocarbon Material Provides More Fire Power To the Spark Plugs OEM Resistor Core Wires Eliminates Radio Frequency Interference Two Layers Of 100 percent Pure SiliconeTaylor 8mm Spiro Pro Ignition Wire Set 73237 Universal Fit 90 Degree Boot 4 Cylinder Red Available For Street Or Track Applications Spiro Wound With Stainless Steel Wire Covered