Champion 3346 Spark Plug - Intake Side

Reliable Ignition Performance for Multiple Vehicle Makes

The Champion Platinum Power 3346 spark plug is engineered to deliver consistent ignition performance across a wide range of vehicles including Acura, Ford, Honda, Toyota, and more. 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 ground electrode core material for stable spark conduction
• Pre-set gap size of 0.046 inches (1.16 mm) for optimal ignition
• Flat seat type with 0.75 inch reach and 14 mm thread diameter
• Non-removable nut electrical terminal and resistor type for noise suppression
• Hex size of 0.625 inches (15.88 mm) for standard installation tools
• Manufacturer heat range rating of 10 suitable for various engine conditions

About the Champion Platinum Power Spark Plug Line

The Platinum Power line by Champion focuses on delivering spark plugs with platinum-tipped center electrodes, which provide longer service life and improved ignition stability compared to conventional plugs. The 3346 part number belongs to this line, offering a balance of durability and performance for secondary ignition systems in many passenger vehicles.

Technical Details and Specifications

This Champion 3346 spark plug features a single ground electrode constructed with a nickel core, paired with a platinum center electrode tip to resist wear and maintain a consistent spark. The flat seat design ensures proper sealing in compatible cylinder heads. With a thread diameter of 14 mm and a reach of 0.75 inches, it fits a variety of engines from brands such as Nissan, Subaru, and Mercedes-Benz. The pre-gap is factory set at 0.046 inches (1.16 mm), reducing the need for adjustment during installation. Additionally, the resistor type helps minimize electromagnetic interference with vehicle electronics.

Common Applications and Problem Solving

• Restores engine misfire issues caused by worn or fouled spark plugs
• Improves cold start performance in vehicles like the Honda Civic and Toyota Camry
• Reduces rough idling and hesitation in models such as the Ford Ranger and Mazda Protege
• Supports fuel efficiency by ensuring consistent ignition in Acura and Hyundai engines
• Helps maintain smooth acceleration and power delivery in vehicles including the Subaru Outback and Nissan 300ZX

Installation Notes and Tips

Before installation, verify compatibility with your vehicle’s make and model. The Champion 3346 spark plug requires a 15.88 mm (5/8 inch) hex socket for removal and installation. Ensure the spark plug gap remains at the factory setting of 0.046 inches; adjust only if specified by the vehicle manufacturer. Apply anti-seize compound sparingly on the threads if recommended, and torque to the vehicle’s specifications to avoid damage to the cylinder head or plug.

Quality Assurance and Warranty

Champion spark plugs, including the Platinum Power 3346, are manufactured to meet OEM standards for fit, form, and function. The use of platinum and nickel materials ensures durability and consistent performance over time. While specific warranty details may vary, Champion products typically come with a limited warranty against manufacturing defects, providing confidence in product reliability.