Denso 5016 Spark Plug

Denso 5016 U-Groove Conventional Spark Plug

The Denso 5016 is a conventional spark plug built for direct-fit service across a wide range of import and domestic applications. Its U-groove ground electrode design is engineered to improve ignitability, helping support more consistent combustion and engine efficiency.

With a copper center electrode core, nickel tip materials, and a 5,000-ohm resistor, this plug is built for stable ignition performance in older Honda, Nissan, Saab, Saturn, and related applications. The Denso U-Groove Conventional line focuses on dependable OE-style operation for vehicles that call for a standard spark plug design.

Key Features

• Part number 5016 from Denso’s U-Groove Conventional line
• U-groove ground electrode tip design for improved ignitability
• 5000 resistance for ignition system compatibility
• Copper center electrode core with nickel tip material
• Nickel ground electrode core material with standard ground configuration
• Pre-gapped at 1.1 mm
• 14.00 mm thread diameter, 19.00 mm reach, 16.0 mm hex size
• Flat seat type with manufacturer heat range 16

Product Details

Denso 5016 is a conventional spark plug designed for vehicles that specify a standard plug with a flat seat and 14 mm thread. The U-groove electrode profile increases the exposed ignition area at the ground electrode, which supports stronger spark exposure at the plug gap. That makes this plug a practical choice for maintaining ignition performance in applications such as Honda CRX, Honda Prelude, Nissan Sentra, Nissan 200SX, Saturn SL2, and Saab 900.

This part cross-references DENSO Auto Parts Q16PR-U11 for the same application.

Common Uses

• Restoring weak or inconsistent spark in older ignition systems
• Replacing worn plugs that can contribute to rough idle
• Addressing hard-start conditions related to plug wear
• Supporting smoother combustion in high-mileage engines
• Maintaining service intervals on vehicles that use a conventional plug design

Installation Notes

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the plug gap matches the vehicle specification if adjustment is required, and inspect ignition wires or coil components during service. This plug is listed for applications including 1990-1991 Acura Integra, 1988-1991 Honda CRX, 1988-1990 Honda Prelude, 1989-1990 Nissan Sentra, 1985-1988 Nissan 200SX, and 1999-2002 Saturn SL2.

Quality Assurance

Denso manufactures this spark plug to OE-style dimensional and material specifications for listed applications. The part number 5016 is supported by published fitment data for 62 vehicle applications across Acura, Geo, Honda, Mercury, Nissan, Oldsmobile, Pontiac, Saab, Saturn, and related models.