Denso 3238 Spark Plug

Denso Double Platinum Spark Plug 3238

Denso Double Platinum spark plug 3238 is built for older import and compact vehicles that call for a flat-seat, 14 mm plug with a 19.00 mm reach. It uses platinum on the center electrode and a platinum chip on the ground electrode to support stable ignition performance in applications such as Honda Accord, Nissan Maxima, and Mitsubishi Galant.

Key Features

• Denso Double Platinum design for OE-style ignition service
• Part number 3238 for direct catalog lookup
• Platinum center electrode tip with platinum chip ground electrode tip design
• 5000 ohm resistor for radio-frequency interference control
• Flat seat, 14 mm thread diameter, 19.00 mm reach, and 20.6 mm hex size
• Pre-gapped to 1.1 mm
• Nickel ground electrode core and copper center electrode core

Product Details

This Denso spark plug is manufactured to meet strict OE performance, durability, and emissions standards. The Double Platinum construction is suited to vehicles that specify a platinum-tipped plug for consistent spark delivery and long service life. If you are servicing a 1987-1989 Honda Accord, 1982-1984 Nissan Maxima, or 1985-1987 Mitsubishi Galant, Denso 3238 provides the correct style of secondary ignition component for those applications.

This part cross-references DENSO Auto Parts P20R11 and Honda 98079-561-46 for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent ignition firing
• Misfire conditions related to aged secondary ignition components
• Reduced fuel economy from degraded spark delivery
• Emissions concerns tied to worn or fouled plugs

Installation Notes and Tips

Verify the vehicle’s required thread diameter, reach, seat type, and heat range before installation. The plug is pre-gapped at 1.1 mm, but the gap should still be checked against the vehicle specification before use. Apply proper torque during installation and inspect the ignition system, plug wires, and coil condition at the same time for best results.

Quality Assurance

Denso manufactures this Double Platinum spark plug to OE performance, durability, and emissions standards. It is a cataloged replacement for a wide range of import applications, including 1977-1994 Nissan, Honda, Mitsubishi, Isuzu, Subaru, and related models listed in the fitment data.

Compatible Vehicles

• Fits 1987-1994 Mitsubishi Precis, N/A
• Fits 1990-1994 Plymouth Laser, N/A
• Fits 1992-1994 Pontiac Sunbird, N/A
• Fits 1992-1993 Isuzu Stylus, N/A
• Fits 1985-1992 Dodge Colt, N/A
• Fits 1987-1990 Chevrolet Sprint, N/A
• Fits 1989 Geo Spectrum, N/A
• Fits 1987-1989 Honda Accord, N/A
• Fits 1985 Honda Accord, N/A
• Fits 1987-1989 Mitsubishi Van, N/A
• Fits 1985-1988 Chevrolet Spectrum, N/A
• Fits 1985-1988 Mitsubishi Mirage, N/A
• Fits 1984-1987 Honda Prelude, N/A
• Fits 1985-1987 Mitsubishi Galant, N/A
• Fits 1987 Subaru Standard, N/A
• Fits 1981-1982 Subaru Standard, N/A
• Fits 1986 Honda Civic, N/A
• Fits 1982-1985 Chevrolet S10, N/A
• Fits 1982-1985 GMC S15, N/A
• Fits 1983-1984 Chevrolet S10 Blazer, N/A
• Fits 1983-1984 GMC S15 Jimmy, N/A
• Fits 1981-1984 Isuzu I-Mark, N/A
• Fits 1983-1984 Isuzu Impulse, N/A
• Fits 1981-1984 Isuzu Pickup, N/A
• Fits 1984 Isuzu Trooper, N/A
• Fits 1982-1984 Nissan Maxima, N/A
• Fits 1983 Dodge Power Ram 50, N/A
• Fits 1983 Dodge Ram 50, N/A
• Fits 1983 Mitsubishi Mighty Max, N/A
• Fits 1980-1983 Nissan 280ZX, N/A
• Fits 1981-1982 Dodge D50, N/A
• Fits 1977-1981 Nissan 810, N/A
• Fits 1980 Nissan 720, N/A
• Fits 1977-1979 Nissan 200SX, N/A
• Fits 1978-1979 Nissan 510, N/A