Autolite Spark Plug (MPN: AR51)

High-Quality Ignition Solution for Optimal Engine Performance

The Autolite Spark Plug AR51 is engineered to provide reliable ignition and superior performance for a variety of vehicles. With over a century of experience in the automotive industry, Autolite delivers spark plugs that meet or exceed original equipment specifications, ensuring efficient engine operation and longevity.

Features

• Copper-Glass Seal bonds the insulator and terminal post center electrode, ensuring full voltage at the spark gap with a gas-tight seal that is 100 percent leak-proof
• Multi-rib insulator design minimizes the risk of "flash-over"
• One-piece terminal post enhances strength and durability
• Cold-formed steel shell with precision rolled threads for a secure fit
• Full copper core electrode for improved performance in all driving conditions
• Designed to deliver quick starts, enhanced fuel economy, and smooth acceleration

Specifications

• Manufacturer: Autolite Spark Plugs
• Manufacturer Part Number: AR51
• Resistor: No
• Electrode Type: OEM
• Electrode Core Material: Copper
• Electrode Tip Material: Nickel Alloy
• Insulator Type: Projected
• Thread Size (IN): 0.551 Inch
• Quantity: Single
• Reach: 3/4 Inch
• Seat Type: Gasket
• Wrench Diameter: 13/16 Inch