Denso 3173 Spark Plug

Overview of Denso Double Platinum Spark Plug 3173

The Denso Double Platinum Spark Plug 3173 is engineered for reliable ignition performance in select Dodge and Mazda vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip: Platinum chip for enhanced durability
• Center Electrode Tip: Platinum for improved wear resistance
• Core Materials: Copper center electrode and nickel ground electrode
• Pre-Gap Size: 0.8 mm for precise spark delivery
• 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 specified engine conditions

Features of the Double Platinum Product Line

The Double Platinum line from Denso focuses on enhanced durability and consistent ignition through the use of platinum on both the center and ground electrode tips. This dual platinum design reduces electrode wear and maintains stable spark performance over time, making it suitable for vehicles requiring long-lasting spark plugs with reliable ignition characteristics.

Technical Description and Compatibility

This spark plug features a copper core center electrode that provides excellent thermal conductivity, paired with a nickel ground electrode core for structural strength. The platinum chip on the ground electrode tip and platinum center electrode tip work together to resist erosion and maintain a stable spark gap. The standard ground configuration with a single ground electrode ensures compatibility with the ignition systems of Dodge Caliber and Mazda 626, Millenia, and Protege models. The 0.8 mm pre-gap size and flat seat type contribute to consistent ignition and proper sealing within the combustion chamber.

Applications and Problem Solving

• Restores proper ignition in Dodge Caliber and Mazda 626, Millenia, Protege engines
• Addresses misfires caused by worn or damaged spark plugs
• Improves fuel efficiency by maintaining optimal spark gap and electrode condition
• Reduces rough idling and engine hesitation
• Helps prevent ignition system failures related to electrode wear

Installation Notes and Tips

• Use a 16 mm socket wrench for installation and removal
• Ensure the spark plug is torqued to manufacturer specifications to avoid damage
• Check and adjust the spark plug gap if necessary before installation
• Inspect the ignition system components for wear or damage during replacement
• Apply anti-seize compound sparingly on threads if recommended by vehicle manufacturer

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Double Platinum 3173 spark plug undergoes rigorous testing for heat range, resistance, and material integrity. Warranty coverage details should be confirmed with the vehicle or part supplier, as they may vary by region and application.