Autolite AI5682 Iridium Ultra Finewire Spark Plug

The Autolite AI5682 Iridium Ultra spark plug represents one of the brand's most technologically advanced ignition products, engineered to deliver optimal fuel efficiency, acceleration, and performance for modern engines. This premium OE replacement spark plug features double precious metal construction for extended durability and service life.

Key Features:

• Laser-welded 0.5mm iridium finewire center electrode provides focused ignition and optimal ignitability
• Proprietary platinum ground electrode delivers increased durability and resistance to wear
• Tapered ground wire design enhances ignitability for improved combustion and performance
• High alumina ceramic multi-rib insulator provides superior thermal conductivity and insulation to prevent flash-over
• Copper core ensures reliable performance with higher thermal conductivity
• Nickel-plated shell resists corrosion
• Extended projection design for better flame kernel exposure
• 100,000 mile service life capability
• 14mm thread diameter with 1.25mm thread pitch, 25mm reach, gasket seat
• Pre-gapped at 0.039 inches (1.0mm)
• 4k Ohm resistor for reduced electromagnetic interference

Torque specifications: 11-19 lb-ft for both cast iron and aluminum heads. Backed by Autolite's limited lifetime warranty guaranteeing optimum performance equal to OE-designed plugs.