Best Praseodymium Yttrium Alloy

Autolite AP5325-4PK Platinum Spark Plug, 4 Pack

Full platinum tip ensures virtually no gap erosion for long plug life.
Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life.
Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy.
Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing.
Nickel-plated steel shell for long-life corrosion resistance.

Full platinum tip ensures virtually no gap erosion for long plug life.
Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life.
Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy.
Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing.
Nickel-plated steel shell for long-life corrosion resistance.

Full platinum tip ensures virtually no gap erosion for long plug life.
Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life.
Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy.
Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing.
Nickel-plated steel shell for long-life corrosion resistance.

MAXIMUM PERFORMANCE: Every Double Platinum spark plug is necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration. Full copper core electrode provides better performance in all conditions.
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.
high nickel alloy side electrode maintains precise gap.
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.

Replacement racing spark plug used by many professional car drivers.
Specifically designed with colder heat ranges than the factory plug to enable performance modifications and handle intense conditions.
Contains an Yttrium-enhanced alloy to enable up to 8% reduction in side wire temperature for improved durability and less pre-ignition.
Thread Diameter- 12mm. Thread Reach- 0.750 inch. Hex Size- 5/8 inch.

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) E3.48 spark plug with a limited lifetime warranty.
Primarily used in a wide variety of automotive and truck applications.

Replacement racing spark plug used by many professional car drivers.
Specifically designed with colder heat ranges than the factory plug to enable performance modifications and handle intense conditions.
Contains an Yttrium-enhanced alloy to enable up to 8% reduction in side wire temperature for improved durability and less pre-ignition.
Features cut back ground electrode for improved ignitability of flame kernel.
Coated in an anti-corrosive nickel plating to prevent rusting.

FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits a variety of domestic applications, designed to increase power, reduce fuel consumption, and....
PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 3 legs that help facilitate excellent heat transfer and increase....
INCREASED DURABILITY: Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for up to 8% reduction....
WHAT'S INCLUDED: One (1) E3.53 spark plug. Features 14mm thread diameter.
0.708-inch thread reach plug with taper seat.

FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits a variety of applications, designed to increase power, reduce fuel consumption, and improve....
PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 3 legs that help facilitate excellent heat transfer and increase....
INCREASED DURABILITY: Designed with colder heat ranges to enable performance modifications, and contains Yttrium-enhanced alloy for up to 8% reduction....
WHAT'S INCLUDED: One (1) E3.58 spark plug. Features 14mm thread diameter.
0.750-inch thread reach plug with gasket seat.

Replacement racing spark plug used by many professional car drivers.
Specifically designed with colder heat ranges than the factory plug to enable performance modifications and handle intense conditions.
Contains an Yttrium-enhanced alloy to enable up to 8% reduction in side wire temperature for improved durability and less pre-ignition.
Features cut back ground electrode for improved ignitability of flame kernel.
Coated in an anti-corrosive nickel plating to prevent rusting.

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

Tapered, v-profile nickel chromium ground electrode for improved cold starts and fuel ignitability.
Heavy-duty, yttrium enhanced copper core center electrode for reliability and performance.
Bosch Copper with Nickel spark plugs feature a heavy-duty yttrium-enhanced copper core center electrode for improved durability.

Tapered, v-profile nickel chromium ground electrode for improved cold starts and fuel ignitability.
Heavy-duty, yttrium enhanced copper core center electrode for reliability and performance.
Bosch Copper with Nickel spark plugs feature a heavy-duty yttrium-enhanced copper core center electrode for improved durability.