More Information for AUTOLITE APP64
{Alternate Inventory Numbers: APP64DP2}
Continue Shopping
Part image
AUTOLITE APP64 Specifications
Center Electrode Core MaterialCopper
Center Electrode DesignStandard
Center Electrode Tip MaterialPlatinum
Electrical Terminal TypeStud
Gap Size0.044"
Gap Size1.1mm
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTapered
Ground Electrode Tip MaterialPlatinum
Hex Size21MM
Hex Size13/16"
Insulator MaterialCeramic
Resistance4000 82
Resistor TypeYes
Seat TypeFlat
Thread Diameter14mm
Tip ConfigurationMid Projection
Double Platinum; Pre-Set Gap: 0.044"
Better materials to give your engine better performance. Platinum-to-platinum design greatly decreases gap erosion, reduces misfires, and provides improved durability.* It's the superior-performing spark plug, providing preferred technology for DIS engines.

Features & Benefits:
  • Platinum-to-platinum firing for superior durability
  • Super conductive Yttrium enhanced ground electrode provides superior heat transfer
  • Platinum enhanced high nickel alloy side electrode maintains precision gap
  • Platinum tip assures virtually no gap erosion for longer plug life
  • Maintains optimum performance and fuel economy longer
*Compared to standard plugs
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 AUTOLITE Spark Plug Is Right For You?

Material / Series Lifespan / Durability Performance / Ignitability Efficiency / Fuel Economy
Copper / Nickel
★★★ ★★
Double Platinum
Double Platinum
★★★★ ★★
Iridium XP
Iridium XP
★★★★★ ★★★★★ ★★
Iridium Ultra
Iridium Ultra
★★★★★★ ★★★★★ ★★
OEM / Interchange Numbers: MS851301

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