Denso 3142 Spark Plug

Overview of Denso Double Platinum Spark Plug 3142

The Denso Double Platinum Spark Plug 3142 is engineered for reliable ignition performance in a range of vehicles including Acura, Audi, Chevrolet, Kia, Saab, and Saturn models. Designed with durable platinum materials, this spark plug supports efficient combustion and consistent engine operation.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip Design: Platinum chip for enhanced durability
• Center Electrode Tip Material: Platinum for improved wear resistance
• Center Electrode Core Material: Copper to ensure excellent conductivity
• Ground Electrode Core Material: Nickel for strength and longevity
• Pre-Gap Size: 1.1 mm for precise spark gap
• Thread Diameter: 14.00 mm with 19.00 mm reach
• Hex Size: 16.0 mm for standard installation tools
• Seat Type: Flat for secure fitment
• Manufacturer Heat Range: 20 suitable for various driving conditions

Details on the Double Platinum Product Line

The Double Platinum line from Denso features spark plugs with platinum on both the center and ground electrodes. This dual platinum design helps extend the service life of the spark plug while maintaining stable ignition performance. The 3142 part number benefits from this technology, providing consistent spark delivery and resistance to electrode wear, which is especially important for vehicles like the Audi A4 Quattro and Acura Integra that demand reliable ignition under diverse conditions.

Technical Description and Compatibility

The Denso 3142 spark plug is designed with a copper core center electrode to maximize electrical conductivity, paired with a platinum tip to resist erosion. The ground electrode features a platinum chip tip and a nickel core, combining durability with effective spark generation. With a resistance rating of 5000 ohms, this spark plug helps reduce radio frequency interference while maintaining ignition efficiency. Its flat seat and 14 mm thread diameter with a 19 mm reach ensure proper fitment in compatible engines.

This spark plug is compatible with a variety of vehicles including Acura NSX, Audi 9-3, A4, A6, Q5, Chevrolet Cobalt, Kia Rio, Saab 9-3X, Saturn Ion, and others. The part number 3142 is specifically suited for secondary ignition systems requiring precise gap and heat range specifications.

Common Applications and Issues Addressed

• Improves ignition reliability in Acura Integra and Audi S4 engines
• Reduces misfires and rough idling in Chevrolet Cobalt and Kia Sportage
• Helps maintain fuel efficiency in Saab 9-3X and Saturn Ion
• Supports consistent engine performance in Audi A6 Quattro and Acura NSX
• Minimizes electrode wear for longer service intervals

Installation Notes and Tips

• Use a 16 mm socket wrench for installation or removal
• Ensure the pre-gap of 1.1 mm is maintained for optimal spark
• Apply anti-seize compound on threads if recommended by vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the flat seat
• Inspect ignition wires and coils during installation for best results

Quality Assurance and Warranty

Denso spark plugs, including the Double Platinum 3142, are manufactured to meet strict OEM standards. The use of high-quality materials such as platinum and copper ensures durability and consistent performance. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. Always refer to vehicle and part documentation for exact warranty terms.