NGK 94524 Spark Plug

NGK Laser Iridium Spark Plug 94524

NGK 94524 is a Laser Iridium spark plug built for modern GM applications that call for precise ignition performance and long service intervals. It uses an iridium center electrode tip, a copper core, and a 0.028 in. pre-gap to support consistent spark delivery in vehicles such as the Buick Envision, Cadillac CT4, CT5, XT4, XT5, XT6, Chevrolet Blazer, and GMC Acadia.

Key Features

• Laser Iridium spark plug with iridium center electrode tip material
• Copper core center and ground electrode construction
• 0.028 in. pre-gap for OE-style setup
• 5000 ohm resistance
• Standard ground configuration with one ground electrode
• 12.00 mm thread diameter, 0.98 in. reach, and 7 heat range
• Stud-style electrical terminal

Laser Iridium Design Details

The Laser Iridium line is NGK’s premium spark plug family for applications that require stable ignition performance and durability under everyday driving conditions. Part number 94524, also identified as ILNFR7A7G, combines an iridium firing tip with copper core construction to help maintain reliable spark characteristics over extended service intervals. This makes it a direct-fit choice for drivers searching for an NGK 94524 spark plug for Cadillac CT5, Chevrolet Blazer, or GMC Acadia service.

Vehicle Fitment

• Fits 2021-2025 Buick Envision, N/A
• Fits 2024-2025 Cadillac CT4, N/A
• Fits 2021-2025 Cadillac CT5, N/A
• Fits 2021-2025 Cadillac XT4, N/A
• Fits 2021-2025 Cadillac XT5, N/A
• Fits 2021-2025 Cadillac XT6, N/A
• Fits 2021-2025 Chevrolet Blazer, N/A
• Fits 2021-2023 Cadillac CT4, N/A
• Fits 2021-2023 GMC Acadia, N/A
• Fits 2020 Cadillac CT4, N/A
• Fits 2020 Cadillac CT5, N/A
• Fits 2019-2020 Cadillac XT4, N/A
• Fits 2020 Cadillac XT5, N/A
• Fits 2020 Chevrolet Blazer, N/A
• Fits 2020 GMC Acadia, N/A
• Fits 2019 Cadillac CT6, N/A

Common Service Uses

• Replacing worn spark plugs that can cause rough idle
• Addressing hard starting or extended crank conditions
• Restoring misfire-related drivability concerns
• Helping correct hesitation or uneven acceleration
• Supporting maintenance for factory-recommended 60,000-mile service intervals

Installation Notes

Verify the OE part number and application before installation. Check the specified gap and confirm the plug matches the engine’s thread diameter, reach, and heat range requirements. Use proper spark plug service procedures to avoid thread damage and ensure correct torque during installation. For fitment-based searches, this NGK 94524 spark plug is commonly selected for Buick Envision, Cadillac XT5, and Chevrolet Blazer maintenance.

Quality Assurance

NGK is a long-established OE supplier and manufacturer serving domestic and import vehicle applications in North America. The brand’s OE-focused manufacturing and distribution network supports consistent product standards for ignition service, and part number 94524 reflects NGK’s Laser Iridium spark plug engineering for modern GM platforms.