NGK 51033 Spark Plug Wire Set

NGK Spark Plug Wire Set for GM V8 Applications

The NGK Spark Plug Wire Set, part number 51033, is a specific-fit ignition wire set for select Chevrolet, GMC, Cadillac, and Hummer applications. Built with silicone insulation, blue outer jackets, and noise suppression construction, it supports stable spark delivery for GM truck and SUV platforms that use coil #12558693.

• Specific-fit NGK spark plug wire set for confirmed GM applications
• Silicone insulation with blue outer covering for heat resistance and durability
• Ferro Mag core material with noise suppression design
• Insulation outside diameter: 7.00
• Cross-reference: DENSO Auto Parts 671-8062
• Part number 51033 for ordering and catalog lookup

NGK Ignition Wire Set Details

NGK Spark Plug Wire Set 51033 is part of NGK’s ignition product line, which includes spark plugs, glow plugs, ignition coils, coil-on-plug boots, and wire sets. NGK applies its OE-focused manufacturing experience to replacement ignition components built for domestic and import vehicles. This wire set is listed for 1999-2007 Chevrolet Silverado and GMC Sierra trucks, plus Cadillac Escalade, Chevrolet Tahoe, Suburban, Avalanche, and GMC Yukon models with the specified coil application. It also covers Hummer H2 and Silverado/Sierra Classic variants with 10.5-inch leads where noted.

What This Wire Set Helps Address

• Misfire conditions caused by worn or damaged ignition wires
• Intermittent spark delivery from cracked insulation or heat-aged leads
• Radio-frequency interference in ignition systems that need suppression
• Hard starting or rough running tied to weak secondary ignition transfer
• Service replacement needs on GM truck and SUV ignition systems

Installation Notes

Verify engine code, coil part number, lead length, and routing before installation. This is a specific-fit wire set, so match the vehicle application and coil reference exactly. Inspect plug boots, coil terminals, and spark plugs during service to confirm the ignition system is in proper condition before final assembly.

Quality Assurance

NGK is an established ignition specialist with extensive OE experience and a long history of manufacturing ignition components to meet durability and operational performance expectations for replacement use. Part number 51033 is built for the listed GM applications and supported by NGK’s global ignition product expertise.