NGK 97382 Spark Plug

NGK Iridium IX Spark Plug 97382

NGK Iridium IX Spark Plug 97382 is built for drivers who want precise ignition performance and dependable OE-style fitment across a wide range of classic and late-model applications. With an iridium center electrode, copper core, and 5,000 ohm resistance, this plug is engineered for stable spark delivery and consistent combustion.

The NGK Iridium IX Spark Plug line focuses on durable ignition performance with a fine iridium tip, tapered ground electrode design, and a standard single-ground configuration. Part number 97382 is also identified as GR4IX.

Key Features

• Iridium center electrode tip material for focused spark delivery
• Copper center electrode core material for efficient heat transfer
• Nickel ground electrode core material with taper-cut tip design
• 5,000 ohm resistance for ignition system compatibility
• 0.040 pre-gap size, 14 mm thread diameter, and 0.75 reach
• Flat seat design with a 13/16 hex size
• Manufacturer heat range 4
• Non-removable nut terminal type

Detailed Description

NGK 97382 is an Iridium IX spark plug designed for a broad range of ignition applications, including Chrysler, Dodge, Plymouth, Jeep, Pontiac, Chevrolet, Cadillac, Mercury, Rolls-Royce, Bentley, Buick, GMC, and Oldsmobile vehicles listed in the fitment data. It is a direct-match option for many older carbureted and fuel-injected engines that call for a 14 mm, flat-seat plug with a 0.75-inch reach and a 0.035- to 0.045-inch application-specific gap.

This part cross-references Four Seasons 97382 for the same application. Part number 97382 and GR4IX are the identifiers to verify when matching the plug to your engine specification.

What It Is Used For

• Restoring weak or inconsistent spark output
• Replacing worn plugs with excessive electrode wear
• Addressing rough idle caused by aged ignition components
• Correcting misfire conditions tied to plug gap or deterioration
• Maintaining proper combustion in vehicles such as Dodge Caravan, Jeep Cherokee, and Chrysler LeBaron applications

Installation Notes and Tips

Verify the required gap for your exact vehicle before installation; fitment notes in the catalog list application-specific gaps such as 0.035, 0.040, 0.044, and 0.045 inches depending on the vehicle. Confirm thread diameter, reach, seat type, and heat range against the engine specification before tightening. Use the correct torque procedure for the cylinder head material and recheck ignition wire or coil condition if the old plugs showed fouling or misfire.

Quality Assurance

NGK is a long-established OE spark plug supplier with North American manufacturing, inventory, and distribution support. The brand’s OE background and broad vehicle coverage reflect its focus on original-equipment standards and consistent production quality for automotive ignition service.