Autolite AP86 Spark Plug

Autolite Platinum Spark Plug AP86

Autolite Platinum Spark Plug AP86 is built for drivers who want OE-style ignition performance with platinum durability. It is engineered for easier starts, quicker throttle response, and steady fuel economy support across a wide range of classic Chrysler, Dodge, Chevrolet, Pontiac, Oldsmobile, Cadillac, and Buick applications.

The AP86 uses a platinum center electrode and platinum tip with a nickel ground electrode, along with a ceramic insulator and resistor design for consistent spark delivery. With a 0.035 pre-gap, 14.0 mm thread diameter, 13/16" hex, flat seat, and 0.374 reach, this spark plug matches many vintage and late-1960s to mid-1970s engine requirements.

Key Features

• Platinum center electrode and platinum tip for improved durability versus standard copper plugs
• OE-style form, fit, and function for many foreign and domestic vehicles
• 0.035 pre-gap for applications calling for that specification
• Resistor spark plug design with 4000 resistance
• Nickel ground electrode with tapered tip design
• Ceramic insulator with mid-projection design for stable ignition performance
• Flat seat, 14.0 mm thread diameter, 13/16" hex, and 0.374 reach

Product Details

Autolite Platinum Spark Plug AP86 is part of the Platinum Spark Plug line, which focuses on longer service life and OE-style replacement fitment. This part number is commonly searched for classic vehicle ignition service, including Chrysler New Yorker, Dodge Charger, Chevrolet Bel Air, Pontiac GTO, and Oldsmobile Cutlass applications. This part cross-references Champion Spark Plug 58 and Anchor 2292 for the same application.

For buyers searching long-tail terms such as Autolite AP86 spark plug for 1970 Chevrolet Camaro, AP86 spark plug for 1969 Pontiac Firebird, or platinum spark plug for 1955-1956 Chrysler 300, this part aligns with the listed fitment and gap requirements shown in the application data.

What It Helps Address

• Hard starting caused by worn or inconsistent spark plugs
• Misfire concerns related to aged ignition components
• Reduced throttle response from degraded plug performance
• Fuel economy loss tied to inefficient combustion
• Service intervals shortened by standard copper plug wear

Installation Notes and Tips

Verify the engine’s required gap before installation and set the plug to the application-specific specification listed in the fitment notes, including 0.035 inch or 0.040 inch where noted. Confirm thread diameter, reach, seat type, and hex size match the cylinder head before installation. AP86 fits a broad range of classic vehicles, including 1950s Chrysler and Chevrolet models, 1960s Pontiac and Dodge applications, and 1970s Oldsmobile and Chevrolet performance and full-size platforms.

• Fits 1975-1976 Chrysler New Yorker, N/A
• Fits 1975-1976 Chrysler Newport, N/A
• Fits 1975-1976 Chrysler Town & Country, N/A
• Fits 1973-1974 Oldsmobile 98, N/A
• Fits 1973-1974 Oldsmobile Custom Cruiser, N/A
• Fits 1971-1974 Oldsmobile Cutlass, N/A
• Fits 1971-1974 Oldsmobile Cutlass Supreme, N/A
• Fits 1973-1974 Oldsmobile Delta 88, N/A
• Fits 1973-1974 Oldsmobile Omega, N/A
• Fits 1973-1974 Oldsmobile Toronado, N/A
• Fits 1971-1972 Oldsmobile 98, N/A
• Fits 1971-1972 Oldsmobile Custom Cruiser, N/A
• Fits 1971-1972 Oldsmobile Toronado, N/A
• Fits 1970-1971 Dodge Challenger, N/A
• Fits 1967-1971 Dodge Charger, N/A
• Fits 1967-1971 Dodge Monaco, N/A
• Fits 1971 Pontiac Acadian, N/A
• Fits 1968-1969 Pontiac Acadian, N/A
• Fits 1964 Pontiac Acadian, N/A
• Fits 1971 Pontiac Bonneville, N/A
• Fits 1957-1968 Pontiac Bonneville, N/A
• Fits 1970-1971 Pontiac Catalina, N/A
• Fits 1955-1968 Pontiac Catalina, N/A
• Fits 1967-1971 Pontiac Firebird, N/A
• Fits 1971 Pontiac Grand Prix, N/A
• Fits 1962-1968 Pontiac Grand Prix, N/A
• Fits 1971 Pontiac GTO, N/A
• Fits 1964-1968 Pontiac GTO, N/A
• Fits 1967-1971 Pontiac Laurentian, N/A
• Fits 1955-1964 Pontiac Laurentian, N/A
• Fits 1971 Pontiac LeMans, N/A
• Fits 1963-1969 Pontiac LeMans, N/A
• Fits 1967-1971 Pontiac Parisienne, N/A
• Fits 1959-1964 Pontiac Parisienne, N/A
• Fits 1970 Chevrolet Bel Air, N/A
• Fits 1955-1964 Chevrolet Bel Air, N/A
• Fits 1950-1953 Chevrolet Bel Air, N/A
• Fits 1969-1970 Chevrolet Camaro, N/A
• Fits 1969-1970 Chevrolet Caprice, N/A
• Fits 1969-1970 Chevrolet Impala, N/A
• Fits 1958-1964 Chevrolet Impala, N/A
• Fits 1970 Chevrolet Monte Carlo, N/A
• Fits 1969-1970 Chevrolet Nova, N/A
• Fits 1970 Oldsmobile Cutlass, N/A
• Fits 1964-1970 Oldsmobile Cutlass, N/A
• Fits 1961 Oldsmobile Cutlass, N/A
• Fits 1970 Oldsmobile Cutlass Supreme, N/A
• Fits 1970 Oldsmobile Delta 88, N/A
• Fits 1965-1970 Oldsmobile Delta 88, N/A
• Fits 1970 Pontiac Acadian, N/A
• Fits 1969-1970 Pontiac Bonneville, N/A
• Fits 1969-1970 Pontiac Catalina, N/A
• Fits 1969-1970 Pontiac Firebird, N/A
• Fits 1969-1970 Pontiac Grand Prix, N/A
• Fits 1969-1970 Pontiac GTO, N/A
• Fits 1969-1970 Pontiac Laurentian, N/A
• Fits 1969-1970 Pontiac LeMans, N/A
• Fits 1969-1970 Pontiac Parisienne, N/A
• Fits 1969-1970 Pontiac Tempest, N/A
• Fits 1967-1969 Dodge Dart, N/A
• Fits 1967-1969 Oldsmobile Cutlass Supreme, N/A
• Fits 1961-1969 Pontiac Tempest, N/A
• Fits 1964-1967 Chevrolet Malibu, N/A
• Fits 1967 Dodge Charger, N/A
• Fits 1958-1961 Chevrolet Bel Air, N/A
• Fits 1955-1961 Chevrolet Corvette, N/A
• Fits 1958-1961 Chevrolet Impala, N/A
• Fits 1958-1961 Pontiac Laurentian, N/A
• Fits 1959-1961 Pontiac Parisienne, N/A
• Fits 1955-1956 Chrysler 300, N/A
• Fits 1955-1956 Chrysler New Yorker, N/A
• Fits 1955-1956 Chrysler Newport, N/A
• Fits 1955-1956 Chrysler Town & Country, N/A
• Fits 1955-1956 Dodge Lancer, N/A
• Fits 1949-1955 Cadillac Commercial Chassis, N/A
• Fits 1953-1955 Cadillac DeVille, N/A
• Fits 1953-1955 Cadillac Eldorado, N/A
• Fits 1951-1954 Chrysler Imperial, N/A
• Fits 1954 Oldsmobile 88, N/A
• Fits 1950 Oldsmobile 88, N/A
• Fits 1950-1954 Oldsmobile 98, N/A
• Fits 1954 Oldsmobile Starfire, N/A
• Fits 1950-1952 Buick Roadmaster, N/A

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and the Platinum Spark Plug line is positioned as an OE-style replacement option for a wide range of vehicles. AP86 is built to match the listed specifications and application requirements for dependable ignition service.