Champion 9803 Spark Plug

Overview of Champion Iridium Spark Plug 9803

The Champion Iridium 9803 spark plug is engineered for reliable ignition performance in select Audi, Honda, Porsche, and Volvo vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability
• Platinum ground electrode pad surface with J gap design
• Non-removable nut electrical terminal type
• Pre-set gap size of 0.041 inches (1.05 mm)
• Flat seat type with 0.75 inch reach and 14 mm thread diameter
• Resistor type spark plug to reduce electrical interference
• Hex size of 0.625 inches (15.88 mm) for installation
• Manufacturer heat range rating of 8

Champion Iridium Product Line Details

The Champion Iridium line focuses on spark plugs that combine iridium and platinum materials to provide a balance of longevity and stable ignition. The iridium center electrode tip offers high melting point resistance, while the platinum ground electrode pad enhances wear resistance. This combination is designed to maintain optimal spark performance over extended service intervals, making the Champion Iridium 9803 suitable for vehicles requiring precise ignition components.

Technical Description and Specifications

This spark plug features a J gap ground electrode tip design with a single platinum ground electrode, which helps maintain consistent spark gaps and reduces electrode wear. The center electrode diameter measures 0.103 inches, constructed from iridium for improved durability under high temperatures. The plug has a flat seat type and a reach of 0.75 inches, compatible with specific engine designs in Audi A4, A6, and Porsche 911 models, as well as Honda Civic and Volvo S60. The non-removable nut terminal ensures secure electrical connection, and the resistor type reduces radio frequency interference. The pre-gap is factory set at 0.041 inches (1.05 mm), supporting optimal ignition timing and combustion efficiency.

Compatible Vehicles and Applications

• Compatible with Audi A4, A4 Quattro, A6, and A6 Quattro models
• Fits Porsche 911 and Boxster engines requiring this spark plug specification
• Suitable for Honda Civic ignition systems
• Designed for Volvo S60 ignition requirements
• Used in secondary ignition systems where precise spark plug performance is critical

Installation Notes and Tips

• Ensure the spark plug gap is checked before installation, though pre-gap is factory set
• Use a 15.88 mm (0.625 inch) hex socket for proper torque application
• Apply anti-seize compound on threads if recommended by vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the flat seat and ensure proper sealing
• Inspect ignition wires and connectors for wear during replacement

Quality Assurance and Warranty

The Champion Iridium 9803 spark plug is manufactured to meet OEM standards for fit, form, and function. It includes a resistor to minimize electrical interference and is constructed with high-quality iridium and platinum materials for durability. While specific warranty details depend on the point of purchase, Champion products typically come with a limited warranty covering defects in materials and workmanship.