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More Information for CHAMPION 309E
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CHAMPION 309E Specifications
Center Electrode DesignStandard
Center Electrode Tip MaterialNickel
Electrical Terminal TypeRemovable Nut
Gap StyleJ Gap
Ground Electrode Quantity1
Ground Electrode Tip DesignJ Gap
Ground Electrode Tip MaterialNickel
Hex Size (IN)0.625
Hex Size (MM)16.000
Hex TypeHex
IndexedNo
Installed Height (Inch)1.99
Insulator Height (in)0.03
Manufacturer Heat Range4
Plug TypeRG4HC
Pre-Gap Size0.029
Reach (IN)0.75
Resistor TypeYes
Seat TypeFlat
SkirtNo
Thread Diameter (IN)0.394
Thread Diameter (MM)10.000
Washer IncludedYes
Washer TypeCrush
Copper Plus; Pre-Set Gap: 0.029"
Champion Copper Plus spark plugs have been original equipment on a wide variety of engines for many years. These plugs have nickel alloy centers and ground electrodes, with reasonably good wear characteristics. In addition, the extrusion of copper into the center electrode allows for increased conductivity and heat control.

Features & Benefits:
  • Dependable and durable
  • Built to ISO and SAE standards for proven performance
  • Patented SAC-9 semi-conductor resistor for maximum EMI & RFI suppression
  • Copper core center electrode allows for accurate control of heat range for longer life
  • TinTac® and ULTRASEAL shell for best corrosion protection of any spark plug in the industry
This spark plug is pre-gapped, but may require minor adjustments with a Spark Plug Gap Tool / Feeler Gauge to match your engine's specifications. For proper engine performance, gaps should be within ±0.004" of OE-Recommended value.
Which CHAMPION Spark Plug Is Right For You?

Material / Series Lifespan / Durability Performance / Ignitability Efficiency / Fuel Economy
Copper / Nickel Plus
Copper		 ★ ★
Platinum Power
Platinum		 ★★ ★★★★ ★
Double Platinum
Double Platinum		 ★★★★ ★★★★ ★
Iridium
Iridium		 ★★★ ★★★★★ ★★

CHAMPION Warranty Information:
Iridium plugs 7 years - Double Platinum Power 5 years - Platinum Power 3 years - Copper Plus 2 years