NGK 97100 Spark Plug

NGK Ruthenium HX Spark Plug 97100

NGK 97100 is a Ruthenium HX High Ignitability spark plug built for direct-fit service in a wide range of GM vehicles. It uses a ruthenium center electrode tip, copper core construction, and a projected high-ignitability ground design to support consistent ignition performance in everyday driving.

The Ruthenium HX line focuses on stable spark delivery and OE-style fitment. For applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Pontiac Grand Prix, this spark plug is specified with a 0.060-inch gap and a tapered seat for the listed engines.

Key Features

• Ruthenium center electrode tip material for durable ignition performance
• Projected square platinum ground electrode design with high ignitability
• Copper core center and ground electrodes for efficient heat transfer
• Pre-gapped at 0.044 inches; application notes specify 0.060-inch gap for listed vehicles
• 14 mm thread diameter, 0.708-inch reach, tapered seat
• 5,000 ohm resistance and non-removable nut terminal
• NGK part number 97100, stock number 97100, cross-reference TR4BHX

Detailed Description

NGK 97100 is part of the Ruthenium HX High Ignitability Spark Plug line, engineered for drivers who want OE-level service parts from a manufacturer with long-standing original equipment supply experience. NGK manufactures spark plugs for domestic and import vehicles, and this part reflects that focus with a tapered-seat design, copper core construction, and a ruthenium tip for dependable ignition characteristics.

Compatible With 1997-2014 Chevrolet Silverado 1500, 2007-2014 Chevrolet Express 1500, 2005-2009 Chevrolet Equinox, 2000-2005 Chevrolet Impala, 1997-2002 Chevrolet Camaro, and other listed GM applications. It also fits 1997-2008 Pontiac Grand Prix, 1997-2005 Pontiac Bonneville, 2005-2006 Pontiac G6, and 1999-2013 GMC Sierra 1500 applications that call for this plug specification. NGK 97100 is a direct replacement choice for many Buick, Chevrolet, GMC, Pontiac, Oldsmobile, Saturn, and Cadillac-era GM platforms in the fitment table.

What It Helps Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent spark delivery
• Misfire conditions tied to aged ignition components
• Reduced throttle response from degraded plug performance
• Service intervals requiring OE-style spark plug replacement

Installation Notes and Tips

Verify engine application, thread diameter, reach, seat type, and gap before installation. The fitment notes list a 0.060-inch spark plug gap for the covered vehicles, so confirm the engine specification before setting or installing the plug. Use the correct torque procedure for tapered-seat spark plugs and inspect ignition wires or coils during service.

Fits 2007-2014 Chevrolet Express 1500, 2007-2014 GMC Savana 1500, 1999-2013 Chevrolet Silverado 1500, 1999-2013 GMC Sierra 1500, 2005-2009 Buick Allure, 2005-2009 Buick LaCrosse, 2005-2009 Chevrolet Equinox, 2006-2009 Pontiac Torrent, 2006-2008 Buick Lucerne, 1997-2008 Pontiac Grand Prix, 2002-2007 Buick Rendezvous, 2007 Chevrolet Silverado 1500 Classic, 2007 GMC Sierra 1500 Classic, 2005-2006 Buick Terraza, 2002-2006 Chevrolet Malibu, 1997-2000 Chevrolet Malibu, 2005-2006 Chevrolet Uplander, 2005-2006 Pontiac G6, 1999-2006 Pontiac Montana, 2005-2006 Saturn Relay, 1996-2005 Buick Century, 1997-2005 Buick LeSabre, 1997-2005 Buick Park Avenue, 2000-2005 Chevrolet Impala, 1997-2005 Chevrolet Monte Carlo, 2002-2005 Pontiac Aztek, 1997-2005 Pontiac Bonneville, 1997-2005 Pontiac Grand Am, 1997-2004 Buick Regal, 1999-2004 Oldsmobile Alero, 1997-2004 Oldsmobile Silhouette, 1997-2002 Chevrolet Camaro, 1997-2002 Pontiac Firebird, 1997-2001 Chevrolet Lumina, 1997-1999 Buick Riviera, 1997-1999 Oldsmobile 88, 1997-1999 Oldsmobile Cutlass, 1998-1999 Oldsmobile Intrigue, 1997-1999 Oldsmobile LSS, 1997-1999 Pontiac Trans Sport, 1997-1998 Buick Skylark, 1997-1998 Oldsmobile Achieva, 1997-1998 Oldsmobile Regency, and 1997 Oldsmobile Cutlass Supreme.

Quality Assurance

NGK is a major OE spark plug supplier in North America with more than 80 years of automotive manufacturing experience. The brand’s OE legacy, broad vehicle coverage, and North American distribution support consistent product availability and application accuracy for service work.