NGK 51431 Spark Plug Wire Set

NGK Spark Plug Wire Set for GM Trucks

NGK Spark Plug Wire Set 51431 is a specific-fit ignition wire set built for select Chevrolet Silverado 1500 and GMC Sierra 1500 applications. It uses blue silicone insulation, a Ferro Mag core, and noise suppression construction to support stable spark delivery and reduced electrical interference.

Part of the NGK Spark Plug Wire Set line, this ignition component reflects NGK’s long OE-focused background in ignition products for domestic and import vehicles. The 51431 wire set is engineered for direct replacement use on compatible GM truck applications, including Silverado 1500 and Sierra 1500 models.

• Blue silicone insulation for heat resistance and durability
• Ferro Mag core material for ignition performance
• Noise suppression design to help reduce radio-frequency interference
• Specific-fit construction for direct application matching
• Insulation outside diameter: 7.00
• NGK part number 51431 / RC-GMX103

Detailed Product Overview

NGK 51431 is a spark plug wire set for 1999-2006 Chevrolet Silverado 1500 and 1999-2006 GMC Sierra 1500, plus 2007 Chevrolet Silverado 1500 Classic and 2007 GMC Sierra 1500 Classic on the GMT800 old body style platform. If you are searching for a spark plug wire set for a Chevrolet Silverado 1500 or GMC Sierra 1500, this NGK ignition wire set provides a direct-fit replacement option with OE-oriented construction.

This part cross-references Standard Ignition 7694 for the same application.

Common Issues This Part Can Address

• Worn or heat-damaged spark plug wires
• Ignition misfire caused by degraded wire insulation
• Electrical noise affecting ignition system operation
• Hard starting related to weak spark transfer
• Rough idle or hesitation from inconsistent ignition delivery

Installation Notes and Tips

Verify engine application and routing before installation, especially on 2007 Silverado 1500 Classic and Sierra 1500 Classic GMT800 old body style trucks. Match each wire to the correct cylinder location and inspect boots, coil connections, and plug terminals for wear before final assembly. Confirm the NGK 51431 part number and RC-GMX103 reference against the vehicle’s ignition layout before ordering.

Quality Assurance

NGK is known for OE-focused ignition manufacturing and global coverage across spark plugs, coils, boots, and wire sets. The 51431 spark plug wire set is produced to meet durability and operational performance expectations associated with OE replacement ignition parts.