Autolite AP24 Platinum Spark Plug

The Autolite AP24 is a single platinum spark plug engineered to deliver superior performance and longevity for a wide range of engine applications. This premium replacement plug features a platinum-tipped center electrode that provides precision firing, reduced gap erosion, and increased durability compared to standard copper plugs.

Key Features:

• Platinum center electrode firing tip prevents gap erosion for extended service life
• Necked-down center electrode fires quicker and cleaner with less voltage required
• High nickel alloy side electrode maintains precise gap throughout plug life
• Copper core design improves resistance to fouling
• High alumina ceramic insulator provides superior thermal conductivity and insulation
• Multi-rib insulator design prevents electrical flashover
• Nickel-plated shell resists corrosion for increased durability
• Built-in 5k ohm resistor reduces electromagnetic interference

Technical Specifications:

• Thread Size: 14mm x 1.25mm pitch
• Thread Reach: 11mm (0.431 inch)
• Seat Type: Tapered (no washer required)
• Hex Size: 5/8 inch (16mm)
• Electrode Gap: 0.044-0.045 inch pre-gapped
• Heat Range: 4 (Autolite scale)
• Projected tip design for improved combustion

This spark plug delivers easier starts, quicker acceleration, and improved fuel efficiency. Backed by a 4-year limited warranty with an estimated service life of 50,000 miles. Torque specifications: 7-15 lb-ft for both cast iron and aluminum cylinder heads.