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AUTOLITE XS4302 Specifications
Center Electrode Core MaterialCopper
Center Electrode DesignFine Wire
Center Electrode Tip MaterialIridium
Electrical Terminal TypeRemovable Nut
Gap Size0.03"
Gap Size0.8mm
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTapered
Ground Electrode Tip MaterialPlatinum
Hex Size16mm
Hex Size5/8"
Insulator MaterialCeramic
Reach0.75"
Reach19mm
Resistance5000 82
Resistor TypeYes
Seat TypeFlat
Thread Diameter10mm
Tip ConfigurationShort Projection
Xtreme Sport; Designed for Motorcycles, ATV's, Personal Watercraft (Jet Skis), Boats, and Snowmobiles
When you take your powersports to the extreme, it's time for Autolite Xtreme Sport™ spark plugs. Designed with iridium-enhanced 0.6mm finewire design for improved ignitability, faster fuel combustion and a more focused ignition versus standard plugs. They'll give you up to 26% quicker starts compared standard plugs, and as much as 21% less hydrocarbon emissions than standard plugs for better fuel efficiency and horsepower.

Features & Benefits:
  • 0.6mm finewire design with SportV-trim ground electrode for more horsepower than standard plug
  • Up to 26% quicker engine starts thana standard non-finewire spark plug*
  • Focused ignition prevents foulingbetter than leading standard plug for reliable starting in any season or weather
*Testing performed by independent lab in comparison to OE Standard Spark Plug

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.
OEM / Interchange Numbers: 31912MFL003, T1290023

AUTOLITE Warranty Information:
2 years for Copper Spark Plugs; 4 years for Platinum Spark Plugs; 5 years for Double Platinum Spark Plugs; Limited Lifetime years for Iridium XP Spark Plugs; 5 years for Professional Series Wire Sets; 1 year for Glow Plugs
Warranty Details