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NAPA Auto Parts Leesburg, VA
700 Fieldstone Drive
Suite 134
Leesburg,  VA  20176
(703) 777-2055
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Autolite High Thread Spark Plug

Autolite High Thread Spark Plug

Part #: ASP HT1
Line: Autolite
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Features & Benefits

Warranty: Standard : 5 Years

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Autolite® High Thread Pro® plugs are an OE patented design exclusively for Ford 3V engines. Its comprehensive seal provides more durability, greater power, improved heat transfer, and a more focused ignition, ensuring your engine reaches and maintains optimal performance levels.


  • Engineered with a fine-wire platinum design that provides more focused ignition power and longer service life.
  • The ground strap provides improved heat transfer over standard J-gap plugs.
  • Its proprietary design improves performance for heat management, fouling resistance & increased dielectric strength.
  • The position of the thread above the cylinder head seating allows for a more compressive seal.
  • Designed with a nickel-plated shell that delivers increased protection against corrosion.
  • 4 year limited warranty
  • Visit the Autolite Brand Page to learn more about our products.

Specifications

Ground Electrode Quantity 1
Insulator Type Projected
Terminal Type Non-removable Nut
Spark Plug Reach 0.867 in / 22.0218 mm
VMRS Code 033003005
Material Platinum
Spark Plug Seat Type Tapered
Spark plug Inductive No
Thread Size 16 mm
Quality Level Best
Spark Plug Heat Range Autolite 11
Brand Autolite
Spark Plug Thread Size 16 mm
Gap Size 0.035 in
Electrode Design High Thread
Seat Type Tapered
Electrode Core Material Single Platinum
Insulator Material Ceramic
Spark Plug Resistor Yes
Resistor Type Yes
Spark Plug Hex Size 9/16 in.
SDS Required No
Hex Size 5/8 in

Safety Information

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