CHAMPION
More Information for CHAMPION 7318
{Alternate Inventory Numbers: RC12PMPB4}
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CHAMPION 7318  
($4.42/Each)
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$4.42
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CHAMPION 7318 Specifications
Center Electrode Diameter (IN)0.1
Center Electrode Tip MaterialPlatinum
Electrical Terminal TypeNon-Removable Nut
Ground Electrode Core MaterialPlatinum
Ground Electrode MaterialPlatinum Pad Surface
Ground Electrode Quantity1
Hex Size (IN)0.625
Hex Size (MM)15.880
Hex TypeHex
IndexedNo
Installed Height (in)1.99
Insulator Height (in)0.12
Insulator Projection (IN)0.12
Manufacturer Heat Range12
Plug TypeRC12PMPB4
Pre-Gap Size (IN)0.040
Pre-Gap Size (MM)1.02
Reach (IN)0.75
Resistor TypeYes
Seat TypeFlat
Taper Diameter (IN)0.27
Thread Diameter (IN)0.551
Thread Diameter (MM)14.000
Washer IncludedYes
Washer TypeCrush
Double Platinum Power; Pre-Set Gap: 0.04"
Champion Double-Platinum Power spark plugs have platinum on both the center and ground electrodes. The center electrode is platinum fine wire that is riveted onto the nickel alloy center electrode. The ground electrode has a platinum pad welded to its surface.

This plug design is widely used for a distributorless ignition with a Waste Spark design. In this kind of ignition system, one bank of spark plugs fires from the center electrode to the ground and the other bank fires from the ground electrode to the center.

Features & Benefits:
  • More power, quicker acceleration
  • Fine wire center electrode and V-trimmed ground electrode create a sharp spark focus
  • Maintains stable operating temperature under all engine loads
  • Heat-Active™ alloy allows electrodes to reach optimal temperature
  • Platinum conductors on both center and ground electrodes for longer life and minimal wear
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
★★★ ★★★★★ ★★
OEM / Interchange Numbers: APP5224, APP5503

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