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More Information for CHAMPION 9405
{Alternate Inventory Numbers: RS12WMPB4}
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CHAMPION 9405  
$5.17
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$5.17
Total
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CHAMPION 9405 Specifications
Center Electrode Tip MaterialIridium
Electrical Terminal TypeNon-Removable Nut
Ground Electrode Core MaterialPlatinum
Ground Electrode Quantity1
Ground Electrode Tip DesignJ Gap
Hex Size (IN)0.625
Hex Size (MM)15.880
Hex TypeHex
IndexedNo
Insulator Height (in)0.12
Manufacturer Heat Range12
Plug TypeRS12WMPB4
Pre-Gap Size (IN)0.050
Pre-Gap Size (MM)1.27
Reach (IN)0.689
Resistor TypeYes
Seat TypeTapered
Thread Diameter (IN)0.551
Thread Diameter (MM)14.000
Washer IncludedNo
Iridium; Pre-Set Gap: 0.05"
Champion Iridium spark plugs offer maximum performance regardless of engine or ignition type. Each plug has an extremely fine-wire iridium center electrode that is "laser-locked" to the center electrode, and a platinum V-trimmed ground electrode to ensure the longest life and greatest erosion resistance.

Features & Benefits:
  • Platinum ground to ensure high performance and long life
  • Maintains stable operating temperature under all engine loads
  • Greatest engine performance regardless of engine type or ignition system
  • Extremely fine-wire iridium center electrode laser-locked to center electrode
  • Exclusive Heat-active Alloy allows electrodes to reach optimal temperature quickly
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: 12571164, 12591131, 12621258, 12680072, AI5263, XP5243

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