Denso 3133 Spark Plug

Reliable Ignition Performance for Ford, Honda, and Mazda Vehicles

The Denso 3133 spark plug from the U-Groove Conventional line delivers consistent ignition performance tailored for select Ford, Honda, and Mazda models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

Key Features of the Denso 3133 Spark Plug

• Resistance rating of 5000 ohms for optimal electrical performance
• Standard ground electrode tip and configuration for reliable spark delivery
• Nickel ground electrode core and tip material for durability
• Copper center electrode core with nickel tip for effective heat conduction
• Pre-gap size of 1.1 mm to ensure proper spark gap
• Single ground electrode design with a 16.0 mm hex size for easy installation
• Flat seat type and 19.00 mm reach for secure fitment
• Thread diameter of 14.00 mm compatible with specified vehicle engines
• Manufacturer heat range of 20 suitable for moderate operating temperatures

About the U-Groove Conventional Product Line

The U-Groove Conventional spark plug line by Denso features a unique groove design on the center electrode that enhances ignition efficiency and combustion stability. This design supports consistent spark generation and contributes to smoother engine operation. The 3133 part number represents a conventional style spark plug optimized for secondary ignition systems in various Ford, Honda, and Mazda models.

Applications and Common Issues Addressed

• Compatible with Ford 626, Honda Accord, Civic, and Mazda B2600, Millenia, MPV, MX-6, Probe, and Protege models
• Helps resolve misfires caused by worn or fouled spark plugs
• Improves engine starting reliability and throttle response
• Reduces rough idling and engine hesitation
• Supports efficient fuel combustion to maintain engine performance

Installation Notes and Tips

• Verify thread diameter (14.00 mm) and reach (19.00 mm) match vehicle specifications before installation
• Use a 16.0 mm socket wrench for proper tightening
• Check and adjust the pre-gap to 1.1 mm if necessary for optimal spark
• Ensure the flat seat type matches the engine cylinder head design
• Follow manufacturer torque specifications to avoid damage

Quality Assurance and Warranty

Denso spark plugs, including the 3133 model, are manufactured to meet strict quality standards for durability and performance. The materials used, such as nickel and copper electrodes, provide reliable conductivity and resistance to wear. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support long-term use in compatible Ford, Honda, and Mazda vehicles.