Champion
Copper Plus

Champion 814 Spark Plug

Brand Champion 814
Center Electrode Diameter (Inch) 0.1
Center Electrode Tip Material Nickel
Classification Champion Copper Plus Small Engine
Electrical Terminal Type Non-Removable Nut
Ground Electrode Core Material Nickel
Ground Electrode Material Nickel Copper Alloy
Ground Electrode Quantity 1
Hex Size 0.813
Hex Size 20.650
Hex Type Hex
Manufacturer Heat Range 82
Plug Type RL82YC
Pre-Gap Size 0.035
Pre-Gap Size 0.90
Reach 0.5
Resistor Type Yes
Seat Type Flat
Thread Diameter 0.551
Thread Diameter 14.000
Product line Copper Plus
Fits E-TON, Yamaha, Benelli, Can-Am, Bombardier, Kawasaki, Polaris, Suzuki, TGB, Arctic Cat, Hyosung, Kasea, Aprilia, Ducati, Harley Davidson, Honda, Opel, Porsche, Saab, and Fiat

Copper core electrode. Improves conductivity and heat control for dependable performance.

Nickel center electrode. Supports consistent ignition and good overall wear.

Resistor design. Helps reduce electrical noise in the ignition system.

Cross-references AMS Automotive 4123, AMS Automotive 4553 and BBB Industries 3725 for the same application. See all 31.

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Champion 814 Copper Plus Spark Plug

Champion Copper Plus 814 is a spark plug built for dependable ignition performance in small engine and secondary ignition applications. It uses a copper core electrode for improved conductivity and heat control, with nickel center and ground electrode materials for steady wear characteristics.

For buyers searching Champion 814 spark plug replacement options, this plug is a practical choice for routine tune-ups where consistent firing and stable combustion matter. It is also cross-referenced to NGK 1092 and 6422 for the same application.

Key Features

  • Copper core electrode for improved conductivity and heat management
  • Nickel center electrode tip and nickel ground electrode core material
  • Pre-gapped to 0.035 in. / 0.90 mm
  • Resistor design for reduced electrical interference
  • Flat seat with 14.000 mm thread diameter and 0.5 in. reach
  • Hex size 0.813 in. / 20.650 mm with non-removable nut terminal
  • Champion Copper Plus Small Engine classification
  • Plug type RL82YC

Product Details

The Champion Copper Plus line focuses on straightforward ignition service with a copper core that helps transfer heat away from the firing tip while maintaining strong conductivity. That balance supports stable spark delivery and even wear over time. The 814 spark plug is built with a flat seat, resistor construction, and a 0.035-inch pre-gap, making it a direct-service option for engines that call for this specification. If you are sourcing a Champion 814 for small engine maintenance or a secondary ignition service job, this part number is the key identifier to match.

Common search terms for this part include Champion 814 spark plug, RL82YC replacement spark plug, and copper core ignition plug for small engine applications. It also appears in interchange listings for several OE and aftermarket references, which helps when matching service parts for equipment and vehicle maintenance. For make/model shoppers, this type of spark plug is often searched alongside Honda Civic and similar ignition service queries when verifying the correct plug specification.

What It Helps Address

  • Hard starting caused by worn or fouled spark plugs
  • Misfire from weak or inconsistent spark output
  • Rough idle related to degraded ignition performance
  • Loss of throttle response from poor combustion
  • Maintenance intervals where the original plug has reached service wear

Installation Notes and Tips

Verify the required thread diameter, reach, seat type, and heat range before installation. Confirm the gap specification against the engine service information, even though this plug is pre-gapped to 0.035 in. Use the correct hex size and terminal style during removal and installation to avoid damage. For Honda Civic ignition service searches and other vehicle-specific applications, always match the plug type RL82YC and the engine’s published specification before final installation.

Quality Assurance

Champion is a long-established ignition brand, and the Copper Plus line is built around a copper core design for conductivity and heat control. The 814 spark plug is manufactured to support dependable wear characteristics in service applications where consistent ignition performance is required.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 31 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4123AMS Automotive — 4553BBB Industries — 3725NGK — 1092NGK — 6422OSC — 4534R4R514R7BU146BU121480543781079050712126476771133896329814BPR6HBPR7HSBPR7HS10BPR8HSCR42CFSE6RTCE7RTCE7TCR42CFSR42FSR426FSRL82YRL82YCW24FPRU10WR7BCZ19