NGK 7634 Spark Plug - Exhaust Side

NGK 7634 Standard Spark Plug

The NGK 7634 standard spark plug is built for OE-style ignition performance across a wide range of domestic and import vehicles. It uses a copper center electrode with nickel tip materials, a nickel ground electrode, and a 5,000 ohm resistor for stable spark delivery and reduced electrical noise.

With a pre-gap of 0.044 inches, flat seat design, 14 mm thread diameter, and 0.75-inch reach, this plug matches common factory specifications for many applications, including Hyundai Sonata, Kia Optima, and Dodge Caravan service needs.

Key Features

• NGK Standard Spark Plug, part number 7634
• Copper center electrode core for dependable ignition transfer
• Nickel center and ground electrode tip materials
• 5,000 ohm resistance for ignition system noise control
• Pre-gapped to 0.044 inches
• Flat seat, 14 mm thread diameter, 0.75-inch reach
• Standard single-ground-electrode design

Product Details

NGK is a long-established OE supplier with broad coverage across domestic and import vehicles, motorcycles, marine engines, and small engines. The 7634 spark plug, also identified as BPR5ES-11, is engineered to meet original equipment standards for durability and consistent operation. This makes it a practical choice for routine ignition service on vehicles such as Hyundai Santa Fe, Kia Magentis, and Mitsubishi Mirage, as well as many older Chrysler, Dodge, Plymouth, Toyota, Honda, and Isuzu applications.

This part cross-references Bosch 7907 and Champion Spark Plug 322 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from weak or inconsistent spark output
• Misfire conditions tied to incorrect plug gap or electrode wear
• Reduced fuel economy from degraded ignition performance
• Service interval maintenance on OE-specified ignition systems

Installation Notes and Tips

Verify the vehicle’s required plug specification before installation. The plug is supplied with a 0.044-inch pre-gap, but some listed applications note a different OE gap requirement, so confirm and adjust to the vehicle manufacturer’s specification when needed. Use the correct 13/16-inch hex socket and install to the proper torque for the cylinder head material.

Compatible With many 1975-2006 applications, including Fits 2001-2006 Hyundai Santa Fe, N/A; Fits 2001-2006 Kia Magentis, N/A; Fits 2001-2006 Kia Optima, N/A; Fits 1990-2005 Hyundai Sonata, N/A; Fits 1987-2000 Dodge Caravan, N/A; Fits 1992-2000 Dodge Grand Caravan, N/A; Fits 1987-2000 Plymouth Voyager, N/A; Fits 1991-1999 Mitsubishi Mirage, N/A; Fits 1981-1994 Toyota Tercel, N/A.

Quality Assurance

NGK manufactures spark plugs to original equipment standards and supports broad OE coverage backed by more than 80 years of automotive ignition expertise. The 7634 is part of NGK’s Standard Spark Plug line, built for consistent fitment and reliable service across a wide range of vehicles.