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Champion 306 Spark PlugOE Quality 60-Day Returns
Part #: 306

Champion 306 Spark Plug

Copper Plus
43 vehicles fit this part
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Copper Plus
Fitment: Honda, Arctic Cat, KTM, Yamaha, Volkswagen, Suzuki, Kawasaki, Land Rover, DAF, Renault, Matra, Tatra, Fiat, Peugeot, Skoda, Chevrolet, AC, Morgan, Fairthorpe, BMW, Ford, Lotus, TVR, Peerless, Reliant, Aston Martin, Dellow, Frazer Nash, Singer, Delahaye, Hotchkiss, Jowett, Lea-Francis, Cisitalia, Saab, Salmson, and MG, SA50 Elite SR, Kitty Cat, 50-3 SX, 50 SXR Pro Jr, 50 SXR Pro Sr, LB50, LB50 Chappy, Beetle, Super Beetle, LB80 II Chappy, A100, LB80 Chappy, MR50, MC1, MC1M, MT1, Range Rover, Karmann Ghia, Thing, Transporter, 44, 55, American, Fastback, Squareback, R10, Campmobile, Djet5, Tatraplan, 600D, 403, 1000 MB, Corvair, Corvair Truck, 600, 750, Daffodil, Ace, Aceca, Greyhound, Plus Four, Atomata, Electron, 2600, Escort, Seven, Super Seven, Grantura, Anglia, Prefect, Squire, GT, Regal, DB, DBD, MK IIE, MK V, Mk VI, Taunus, 203, DB2-4, MK IIC, Atom, Continental, Eleven, DB3, Nine, MK III, 135MS, Gregoire, Javelin, Eighteen, Fourteen, 202, 92, Randonee, MK I, Standard, TB, TA Drophead, PB Midget, and PA Midget
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Reliable Spark Plug for Ford, Land Rover, and Volkswagen Vehicles

The Champion Copper Plus 306 spark plug is engineered to deliver consistent ignition performance for select Ford, Land Rover, and Volkswagen models. Designed with durable nickel and copper alloy materials, this spark plug supports efficient combustion and reliable engine operation.

  • Ground electrode core made of nickel for durability
  • Nickel center electrode tip for stable spark delivery
  • Pre-set gap size of 0.025 inches (0.63 mm) for optimal ignition
  • Flat seat type ensuring proper sealing
  • Thread diameter of 14 mm (0.551 inches) with 0.5 inch reach
  • Hex size of 20.65 mm (0.813 inches) for easy installation
  • Non-resistor type spark plug with removable nut electrical terminal
  • Manufacturer heat range 86 suitable for small engine applications

Detailed Product Features and Specifications

The Champion Copper Plus 306 spark plug features a nickel copper alloy ground electrode and a nickel center electrode tip, providing a balance of conductivity and wear resistance. The spark plug’s pre-gap is factory set at 0.025 inches (0.63 mm), ensuring optimal spark gap for efficient combustion. Its flat seat design helps maintain a secure fit and proper sealing within the combustion chamber. The thread diameter measures 14 mm (0.551 inches) with a reach of 0.5 inches, compatible with specific small engine configurations. The hex size of 20.65 mm (0.813 inches) allows for straightforward installation and removal using standard tools. This spark plug does not include a resistor and features a removable nut electrical terminal for flexible connection options.

About the Champion Copper Plus Product Line

The Copper Plus line by Champion is designed to provide reliable ignition components for small engine applications. This product line focuses on delivering spark plugs with copper cores and durable electrode materials to support consistent ignition and engine performance. The Copper Plus 306 spark plug is part of this line, offering a balance of durability and conductivity suitable for vehicles like the Ford Escort, Land Rover Range Rover, and Volkswagen Beetle.

Compatible Vehicles and Common Applications

  • Ford Escort ignition system maintenance
  • Volkswagen Beetle spark plug replacement
  • Land Rover Range Rover ignition performance restoration
  • Addressing misfires and rough idling in compatible models
  • Improving cold start reliability in small engine vehicles

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.025 inches (0.63 mm) as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or combustion chamber. The flat seat design requires proper seating to ensure a secure fit and prevent compression leaks. The removable nut electrical terminal allows for flexible connection to various ignition wire types. Always inspect the spark plug for damage or wear before installation.

Quality Assurance and Warranty Information

Champion manufactures the Copper Plus 306 spark plug to meet industry standards for ignition components. The use of nickel and copper alloy materials supports durability and consistent performance. While specific warranty details are not provided, Champion products typically adhere to quality control processes to ensure reliability in compatible Ford, Land Rover, and Volkswagen vehicles.

BrandChampion
Part Number306
PositionCopper Plus
Center Electrode Diameter (Inch)0.1
Center Electrode Tip MaterialNickel
ClassificationChampion Copper Plus Small Engine
Electrical Terminal TypeRemovable Nut
Ground Electrode Core MaterialNickel
Ground Electrode MaterialNickel Copper Alloy
Ground Electrode Quantity1
Hex Size0.813
Hex Size20.650
Hex TypeHex
Installed Height (Inch)2.24
Manufacturer Heat Range86
Plug TypeL86C
Pre-Gap Size0.025
Pre-Gap Size0.63
Reach0.5
Resistor TypeNo
Seat TypeFlat
Taper Diameter (Inch)0.31
Thread Diameter0.551
Thread Diameter14.000

This part fits 43 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1979VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1978VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1977VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1976VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1975VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1974Land RoverRange Rover3.5LV8N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1974VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1973Land RoverRange Rover3.5LV8N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1973VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1972Land RoverRange Rover3.5LV8N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1972VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1971Land RoverRange Rover3.5LV8N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1971VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1970Land RoverRange Rover3.5LV8N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1970VolkswagenBeetle1.6LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1969VolkswagenBeetle1.5LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1968VolkswagenBeetle1.5LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1967VolkswagenBeetle1.5LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1966VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1966VolkswagenBeetle1.3LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1965VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1964VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1963VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1962VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1961FordEscort1.2LL4N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1961VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1960FordEscort1.2LL4N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1960VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1959FordEscort1.2LL4N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1959VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1958FordEscort1.2LL4N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1958VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1957FordEscort1.2LL4N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1957VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1956FordEscort1.2LL4N/ANon-Resistor Type; Gap 0.025 (in); Plug Type Number L86C; Copper Plus
1956VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1955VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1954VolkswagenBeetle1.2LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1954VolkswagenBeetle1.1LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1953VolkswagenBeetle1.1LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1952VolkswagenBeetle1.1LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1951VolkswagenBeetle1.1LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus
1950VolkswagenBeetle1.1LH4N/ANon-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number L86C; Copper Plus

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

10521410A147AU148A148AU14E415624122961224172656303430733389632930640144025414415417421442CF44CF45105357502773211834234MI834247MIAE4AE4CAE4XAE8AM37234AV4B6HSB6HS10B6HSAB6HVB6HVXE5CL288L86L86CL88L88AL89CMM43FFS425ZTM20699W145M1W145T1W150M11SW16FSUW17FUW190M11SW200P1W20FSUW20FSZUW22FSUW22FSZUW22FUW7AW7ACW8AW8A0W8ACW8APW8ASW9AW9ACW9AC0W9EOWR8ACZ68

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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