Description

Autolite 275 Copper Non-Resistor Spark Plug

Condition: New Old Stock

Autolite 275 copper-core, non-resistor spark plug for compatible classic automotive applications. Features nickel electrodes, a ceramic insulator, gasket seat, and removable terminal nut. Suitable for maintenance or restoration of engines that specifically call for this plug.

Sold individually—one spark plug per purchase. Confirm the exact engine application and required gap before ordering. Packaging condition should be described from the actual item. 

Specifications

Brand: Autolite

Part number: 275

Type: Copper-core spark plug

Resistor: No

Center electrode core: Copper

Center and ground electrode tips: Nickel

Thread size: M14 × 1.25

Nominal thread reach: 1/2 inch / 12.7 mm

Hex size: 13/16 inch / approximately 21 mm

Seat: Flat gasket seat

Terminal: Removable nut

Ground electrodes: One

Catalog preset gap: 0.025 inch / approximately 0.64 mm

Quantity: One plug.

Autolite’s heat-range chart places 275 in the 14 mm, 1/2-inch-reach, non-resistor family. 

Selected Fitment

Jeep Wagoneer 1965–1967: 3.8L inline-six

Buick LeSabre 1964: 4.9L V8

Buick Skylark 1964: 4.9L V8

Pontiac Tempest 1961–1962: 3.5L V8

Mercedes-Benz 300SEL 1970–1971: 3.5L or 6.3L V8

Fiat 500 1959–1961: 0.5L two-cylinder. 

Triumph Spitfire 1975–1980: selected applications, including the 1.5L four-cylinder

Volvo 1800 1969–1973: 2.0L four-cylinder

Volvo 164 1975: 3.0L inline-six

Porsche 912 1969: 1.6L four-cylinder. 

Additional catalog listings include Buick Skylark 1961–1963, Oldsmobile Cutlass 1962–1963, and Range Rover 1970–1974; verify the engine before adding these to a compatibility selector. Required gaps vary by application, including 0.025, 0.030, and 0.035 inch.