ReviewsPraseodymium Yttrium Alloy

E3 Spark Plugs E3.66 Premium Automotive Spark Plug w/ DiamondFIRE Technology Pack of 1

Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon....
E3's patented DiamondFIRE edge-to-edge electrode provides maximum performance with increased efficiency, and a faster more complete burn.
Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for a reduction in side wire temperature for....
Includes one (1) E3.66 spark plug with a limited lifetime warranty.
Primarily used in a wide variety of automotive and truck applications.

Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions.
E3's patented DiamondFIRE edge-to-edge electrode provides maximum performance with increased efficiency, and a faster more complete burn.
Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for a reduction in side wire temperature for less pre-ignition.
Includes one (1) E3.72 spark plug with a limited lifetime warranty.
Primarily used in a wide variety of automotive and truck applications.

FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits primarily Ford applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions.
PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 3 legs that help facilitate excellent heat transfer and increase turbulence in the cylinder.
INCREASED DURABILITY: Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for up to 8% reduction in side wire temperature for less pre-ignition.
WHAT'S INCLUDED: One (1) E3.72 spark plug. Features 18mm thread diameter.
0.430-inch thread reach plug with taper seat.

MAXIMUM PERFORMANCE: Every Platinum spark plug is necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration..
IMPROVED DURABILITY: Our spark plugs are platinum-to-platinum firing for superior durability and super conductive Yttrium enhanced ground electrode provides superior heat transfer.
CONSTRUCTION: These spark plugs are platinum enhanced high nickel alloy side electrode maintains precision gap and assures virtually no gap erosion for longer plug life.
FUEL EFFICIENCY: The Autolite Platinum automotive replacement spark plug works to optimize engine performance for a longer life and improved fuel economy..
AUTOLITE ADVANTAGE: Autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plugs needs.

FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions.
PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 3 legs that help facilitate excellent heat transfer and increase turbulence in the cylinder.
INCREASED DURABILITY: Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for up to 8% reduction in side wire temperature for less pre-ignition.
WHAT'S INCLUDED: One (1) E3.62 spark plug. Features 14mm thread diameter.
0.708-inch thread reach plug with taper seat.
WARRANTY: Often used for domestics. Unique ground electrode and full-size center electrode provides optimal performance guaranteed for five years or 100,000 miles.

FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits a variety of import and domestic applications, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions.
PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 3 legs that help facilitate excellent heat transfer and increase turbulence in the cylinder.
INCREASED DURABILITY: Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for up to 8% reduction in side wire temperature for less pre-ignition.
WHAT'S INCLUDED: One (1) E3.68 spark plug. Features 14mm thread diameter.
1-inch thread reach plug with gasket seat.
WARRANTY: Often used for Hemi. Unique ground electrode and full-size center electrode provides optimal performance guaranteed for five years or 100,000 miles.

Revolutionary surface air gap firing technology featuring two yttrium-enhanced ground electrodes delivers a longer, more powerful spark for optimum engine performance.
Two yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for more efficient combustion...plus a longer performance life.
More platinum in the center electrode further increases performance life.
Electrode gap is factory set to provide ease of installation never requires adjustment.
Provides ease of installation -- never requires adjustment.

Revolutionary surface air gap firing technology featuring two yttrium-enhanced ground electrodes delivers a longer, more powerful spark for optimum engine performance.
Two yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for more efficient combustion...plus a longer performance life.
More platinum in the center electrode further increases performance life.
Electrode gap is factory set to provide ease of installation never requires adjustment.
Provides ease of installation -- never requires adjustment.