Spark Plug Autolite AR3931 RACING PLUGS 4/BX

Racing Spark Plug


Part Number AR3931
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Spark Plug; Racing; Without Resistor; Yttrium-Enhanced Alloy; Standard Length; 3/4 Inch Reach; 0.025 Inch Gap; 5/8 Inch Hex; 14 Millimeter Thread; Flat Seat

Since its inception, the Autolite ® brand has provided the automotive aftermarket & Original Equipment manufacturers the highest quality ignition products. We have been in operation for over 100 years & have produced more than 11 Billion spark plugs & glow plugs. Our plugs are specifically designed for each application to meet or exceed OE quality & performance. Autolite makes plugs for Japanese, European & Korean cars as well as plugs for Lawn & Garden & Power Sports. As a leading supplier of spark plugs, ignition wire sets & Coil-on-Plug boots, the Autolite brand has the right ignition products for your vehicle, regardless of make or model, import or domestic.

Resistor: No
Electrode Type: OEM
Electrode Core Material: Copper
Electrode Tip Material: Chromium Nickel Alloy
Insulator Type: Non-Projected
Thread Size (IN): 0.551 Inch
Thread Size (MM): 14 Millimeter
Reach: 3/4 Inch
Seat Type: Gasket
Wrench Diameter: 5/8 Inch
Quantity: Single

– Cut Back Ground Electrode For Improved Ignitability
– Anti-Corrosive Nickel Plating
– Large Ground Electrode For Better Heat Transfer
– Used By Many Professional Car Drivers
– Limited 90 Day Warranty


Weight 0.10000 kg
Dimensions 1.10000 × 3.50000 × 1.05000 cm

Part Number