NGK 96329 Spark Plug

NGK Laser Iridium Spark Plug 96329

NGK Laser Iridium Spark Plug 96329 is an OE-style ignition component built for direct replacement service on select Chevrolet, GMC, Buick, and Cadillac applications. It uses an iridium center electrode tip, a nickel ground electrode, and a 0.044" pre-gap to support consistent spark delivery and stable engine operation.

The Laser Iridium line is NGK’s premium spark plug family, focused on OE-equivalent fit, long service intervals, and dependable ignition performance for modern gasoline engines. Part number 96329 is also identified as ILTR5L11.

Key Features

• Iridium center electrode tip for precise spark and long service life
• Nickel ground electrode with standard tip design and standard configuration
• 0.044" pre-gap for OE-style installation on listed applications
• 5,000 ohm resistance for ignition system compatibility
• Tapered seat, 14 mm thread diameter, 5/8 hex size
• Copper center electrode core for efficient heat transfer
• Manufacturer heat range 5

Detailed Product Overview

NGK 96329 is engineered as a direct replacement spark plug for vehicles that call for an iridium plug with a tapered seat and 0.044" gap. It is listed for 2021-2022 Chevrolet Colorado and GMC Canyon, 2021 Chevrolet Blazer and GMC Acadia, plus earlier coverage including 2013-2017 Cadillac ATS, 2013-2015 Chevrolet Malibu, 2014-2016 Chevrolet Impala, 2015-2016 GMC Canyon, and other select Buick, Chevrolet, and GMC models. If you are servicing a Chevrolet Colorado, GMC Canyon, or Buick Envision and need an OE-equivalent spark plug, NGK 96329 is built for that application.

This part cross-references DENSO Auto Parts 4718 and Bosch 96301 for the same application.

Common Issues This Part Can Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire codes related to plug wear or gap drift
• Reduced throttle response from inconsistent spark delivery
• Service interval replacement on OE-recommended maintenance schedules

Installation Notes and Tips

Verify engine application by year, make, model, and OE service interval before installation. Confirm the plug gap matches the vehicle specification, and inspect coil boots, ignition coils, and threads during service. Use proper torque procedures for the tapered seat design to help prevent damage to the cylinder head or plug body.

Quality Assurance

NGK is a long-standing OE supplier and ignition specialist with broad coverage across domestic and import vehicles. The brand’s manufacturing focus on original equipment standards supports consistent fit and operational performance for service replacement use.