Denso 3239 Spark Plug

Denso Double Platinum Spark Plug 3239

Denso Double Platinum Spark Plug 3239 is built for OE-style ignition performance, durability, and emissions control. It uses a platinum chip ground electrode, a platinum center electrode tip, and a copper core center electrode for stable spark delivery in demanding secondary ignition systems.

Compatible with Chrysler Grand Voyager, Chrysler Town & Country, Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Plymouth Grand Voyager, and Plymouth Voyager applications listed below, this spark plug is a direct-fit choice for owners maintaining factory-style ignition performance.

Key Features

• Double Platinum design with platinum tip materials on both electrodes
• 5000 ohm resistance for controlled ignition performance
• Copper core center electrode for efficient heat transfer
• Nickel ground electrode core with standard ground configuration
• Flat seat design with 14.00 mm thread diameter and 19.00 mm reach
• Pre-gapped to 1.3 mm for the specified application
• Manufactured to OE performance, durability, and emissions standards

Product Details

Denso Double Platinum 3239 is engineered for vehicles that call for a flat-seat spark plug with a 20.6 mm hex size and manufacturer heat range 16. The platinum chip ground electrode and platinum center electrode tip help maintain consistent ignition characteristics over time, while the copper core supports heat dissipation. This part cross-references Chrysler 4727 114 and DENSO Auto Parts P16R13 for the same application.

Use Denso 3239 when servicing ignition systems on 1990-2000 Plymouth Grand Voyager, 1995-2000 Dodge Grand Caravan, 1996-2000 Dodge Caravan, 1996-2000 Chrysler Town & Country, 1996-2000 Plymouth Voyager, 2000 Chrysler Grand Voyager, and 2000 Chrysler Voyager models listed in the fitment data.

Common Issues This Part Can Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire conditions related to plug wear or gap drift
• Reduced fuel economy from inconsistent spark delivery
• Loss of throttle response from degraded secondary ignition performance

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the plug gap matches the vehicle specification and inspect ignition wires, coil components, and plug wells for wear or contamination during service. For best results, install on the listed Chrysler, Dodge, and Plymouth applications using the factory torque specification.

Quality Assurance

Denso manufactures this Double Platinum spark plug to strict OE performance, durability, and emissions standards. The design and materials are selected to support consistent service life in the listed applications, including Chrysler Town & Country, Dodge Caravan, and Plymouth Voyager fitments.