Fram AR135 Autolite Racing Spark Plug 14mm Copper Core Non-Resistor

The Autolite AR135 Racing Spark Plug is engineered for high-performance and racing applications where maximum ignition efficiency is critical. This professional-grade spark plug features a copper core center electrode and advanced design elements that deliver superior performance under extreme conditions.

Key Features:

• Cut-back ground electrode exposes the spark for improved ignitability and faster flame kernel growth
• Yttrium-enhanced alloy construction enables up to 8% reduction in ground wire temperature for improved durability and reduced pre-ignition risk
• Large ground electrode design provides better heat transfer to prevent overheating
• Nickel-plated shell prevents corrosion and ensures long service life
• High alumina multi-rib ceramic insulator provides superior thermal conductivity and prevents flashover
• Non-resistor design for racing applications
• Factory preset gap of 0.025 inches (0.6mm)

Specifications:

• Thread Size: 14mm x 1.25 pitch
• Reach: 0.460 inches (11.68mm)
• Seat Style: Tapered seat
• Hex Size: 5/8 inch (16mm)
• Insulator Type: Short projection
• Center Electrode: Copper core with copper tip

Installation:

• Torque Specifications: 7-15 lb-ft for both cast iron and aluminum heads

This spark plug is designed for modified and racing engines that require colder heat ranges than standard OEM plugs. The AR135 is used by professional race car drivers and is ideal for high-compression and forced induction applications where pre-ignition must be avoided.

Note: Spark plugs are priced individually but may only be ordered in sets of 4.