The Best Automotive Performance Spark Plugs of 2023

FOR OPTIMAL PERFORMANCE: Automotive spark plug that fits a variety of import 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) E3.48 spark plug. Features 14mm thread diameter; 0.750-inch thread reach plug with gasket seat; 5/8-inch hex size

WARRANTY: Often used for imports. Unique ground electrode and full-size center electrode provides optimal performance guaranteed for five years or 100,000 miles

100% New Construction

10.2mm Spiral Wound Design

One Year Warranty

UltraLow Resistance KEVLAR Core

Ultra High Strength/High Temp. Silicone Boots and Sleeve

Made from highest quality materials to help deliver maximum voltage - ensuring the ultimate performance.

Extremely high EMI/RFI suppression along with a very low resistance to help deliver the most spark possible.

Heavy duty 8.5mm diameter silicone jacket to protect the Kevlar spiral wound core from heat, moisture and chemicals.

Made with wire leads that deliver a low 40 ohms of resistance per-foot for maximum EMI/RFI noise suppression.

Engineered for high performance engines that need all of the voltage they can get for maximum power output.

8" Single lead wire.

All terminals are stainless steel.

All coil boots are EPDM black.

8.5mm spiral core that matches MSD Wires 500 ohm per foot with braid.

Fitment: LS1, LS2, LS3, LS6, LS7, LSA, LS9 (NOT VORTEC); Car Fitment Only - Will Not Fit Truck/SUV.

DENSO # 4503

1order = 6 Pieces

Durable - Made of double wall braided fiberglass sleeving, guaranteed for long time use

Flexible- These sleeves fits 45 Degree, 90 Degree and Straight Spark Plug Boots

Easy Installation - Just slide it on your spark plug boots for maximum protection

Heat Protection - These sleeves can withstand heat up to 1200 Degrees due to its Patented Insultherm Technology

Includes 1 x A-Team Performance Spark Plug Wire Boot Heat Shield Rated up to 1,200 Degrees Protector Sleeve Braided Cover Compatible with Car Truck Hot Rod Street Rod Race Car SBC BBC SBF BBF 6" Long 8 PCS Blue

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 2 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) E3.81 spark plug. Features 24mm thread diameter; 1-inch thread reach plug with gasket seat; 9/16-inch hex size

Fit type: Vehicle Specific

Package Dimensions: 2.032 cms (L) x 2.54 cms (W) x 8.382 cms (H)

Product Type: Spark Plug

Package Quantity: 1

Country Of Origin: Japan