Best Electrode Alloy

Autolite APP5263-4PK Double Platinum Spark Plug, Pack of 4

Full platinum tips ensure virtually no gap erosion.
Works to optimize engine performance for a longer life and improved fuel economy.
Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration.
High nickel alloy side electrode maintains precise gap.
Full copper core electrode provides better performance in all conditions.

Full platinum tips ensure virtually no gap erosion.
Works to optimize engine performance for a longer life and improved fuel economy.
Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration.
High nickel alloy side electrode maintains precise gap.
Full copper core electrode provides better performance in all conditions.

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....

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.

Extreme performance upgrade via OEM spark plugs and provide a lifetime at 40,000 50,000 miles..
Plugs have a fine-wire Iridium center electrode and nickel-alloy terrain electrodes for maximum engine and torque..
Designed for fuel-injected and turbo engines..

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.

Extreme performance upgrade via OEM spark plugs and provide a lifetime at 40,000 50,000 miles..
Plugs have a fine-wire Iridium center electrode and nickel-alloy terrain electrodes for maximum engine and torque..
Designed for fuel-injected and turbo engines..

OEM number: LFR6AIX-11 #6619 Iridium IX Spark.
Extreme performance upgrade via OEM spark plugs and provide a lifetime at 40,000 50,000 miles..
Plugs have a fine-wire Iridium center electrode and nickel-alloy terrain electrodes for maximum engine and torque..
Designed for fuel-injected and turbo engines..