Champion 3720 Spark Plug

Reliable Ignition with Champion Platinum Power Spark Plug 3720

The Champion Platinum Power spark plug part number 3720 delivers consistent ignition performance for a wide range of vehicles including Audi, BMW, Toyota, and Volkswagen models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Center electrode tip made of platinum for enhanced durability
• Nickel copper alloy ground electrode for stable spark delivery
• Non-removable nut electrical terminal type for secure connection
• Flat seat type with 0.75 inch reach and 14 mm thread diameter
• Resistor type spark plug to reduce electrical interference
• Pre-gap size optimized at 0.03 and 0.0762 inches for proper spark gap
• Hex size of 0.625 inch (15.88 mm) for easy installation
• Manufacturer heat range rating of 12 for balanced heat dissipation

Detailed Features and Specifications

The Champion Platinum Power 3720 spark plug features a platinum center electrode tip that improves wear resistance and extends service life compared to conventional copper plugs. The ground electrode is constructed from a nickel copper alloy, providing reliable spark conduction and durability under high temperatures. This spark plug includes a non-removable nut electrical terminal type, ensuring a secure and stable connection within the ignition system. Its flat seat design and 0.75 inch reach make it compatible with various engine configurations, while the 14 mm thread diameter fits many European and Asian vehicles.

With a manufacturer heat range of 12, this spark plug balances heat dissipation and prevents fouling in engines with moderate to high operating temperatures. The resistor built into the plug helps reduce radio frequency interference, protecting sensitive electronic components. The pre-gap sizes of 0.03 and 0.0762 inches are factory set to optimize ignition performance and fuel efficiency.

About the Champion Platinum Power Product Line

The Platinum Power line from Champion focuses on delivering spark plugs with enhanced durability and consistent ignition performance. Utilizing platinum-tipped electrodes, these plugs offer longer service intervals and improved wear resistance compared to standard copper plugs. The 3720 model exemplifies this line’s commitment to quality materials and precise engineering, suitable for a variety of passenger vehicles requiring reliable secondary ignition components.

Compatible Vehicles and Common Applications

• Compatible with Audi A4, A6 Quattro, and A8 Quattro models
• Fits BMW 318i, 325i, 530i, and 740i series
• Suitable for Toyota 4Runner, Tacoma, and Prius C
• Works with Volkswagen Golf, Jetta, and Passat
• Also compatible with Land Rover Range Rover and Mercedes-Benz C230

Issues Addressed by Champion Platinum Power 3720 Spark Plug

• Misfiring or rough engine idle due to worn spark plugs
• Reduced fuel efficiency caused by inconsistent ignition
• Difficulty starting the engine in cold or damp conditions
• Engine hesitation or loss of power under acceleration
• Interference with electronic systems from spark plug noise

Installation Notes and Tips

• Verify correct spark plug gap before installation; factory pre-gap is 0.03 to 0.0762 inches
• Use a torque wrench to tighten to manufacturer specifications to avoid damage
• Ensure the flat seat properly contacts the cylinder head for optimal sealing
• Inspect ignition wires or coils for wear when replacing spark plugs
• Apply anti-seize compound sparingly on threads if recommended by vehicle manufacturer

Quality Assurance and Warranty

Champion spark plugs, including the Platinum Power 3720, are manufactured to meet strict quality standards for durability and performance. The use of platinum and nickel copper alloy materials ensures long service life and consistent ignition. While specific warranty details may vary, Champion products typically come with a limited warranty against manufacturing defects. Always consult vehicle and product documentation for exact warranty terms.