Experience enhanced ignition performance with the Autolite 847 Copper Resistor Spark Plug—your best alternative to original equipment (OE) spark plugs. Engineered with copper for quick starts, improved fuel economy, and smoother acceleration, this spark plug ensures reliable cold starts and optimal engine output across popular Buick, Cadillac, Oldsmobile, and Pontiac models.

Backed by Autolite's heritage in providing superior quality ignition products, this copper resistor spark plug merges dependable OE form and fit with exceptional affordability. Its premium construction, featuring a nickel electrode, guarantees excellent conductivity and durability, making it an essential component for maintaining vehicle performance and longevity. Perfect for both DIY enthusiasts and professional mechanics, the Autolite 847 is an indispensable upgrade for your ignition system.

• Offers OE form, fit, and function at a value price
• Copper core enhances fuel economy and acceleration
• Compatible with numerous Buick, Cadillac, Oldsmobile, Pontiac models
• Nickel center electrode ensures optimal conductivity
• Manufactured for quick starts in all weather conditions

• AC-Delco: R46SZ
• Champion Spark Plug: 66
• Denso: W9PR-U20
• Motorcraft: AR82-6

• 1973-1975 Oldsmobile Delta 88
• 1973-1975 Oldsmobile Toronado
• 1977-1984 Oldsmobile Delta 88
• 1977-1984 Oldsmobile Toronado
• 1975-1977 Buick Century
• 1975-1977 Buick Regal
• 1975 Oldsmobile Cutlass Salon
• 1975 Oldsmobile Omega
• 1975 Pontiac Ventura
• 1976-1980 Cadillac Seville
• 1977-1980 Oldsmobile Cutlass Salon
• 1976 Oldsmobile Cutlass Supreme | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Oldsmobile Delta 88 | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1977 Oldsmobile Omega
• 1976 Oldsmobile Omega | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Pontiac Grand LeMans | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Pontiac LeMans | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1977 Pontiac Ventura
• 1977-1983 Buick Estate Wagon
• 1977-1984 Buick Riviera
• 1977-1979 Pontiac Firebird
• 1977 Pontiac Grand LeMans
• 1977 Pontiac Grand Prix
• 1978-1984 Oldsmobile Cutlass Calais
• 1979-1980 Cadillac Eldorado
• 1981 Pontiac Parisienne
• 1973-1975 Oldsmobile 98
• 1973-1975 Oldsmobile Custom Cruiser
• 1977-1984 Oldsmobile 98
• 1977-1984 Oldsmobile Custom Cruiser
• 1975 Buick Apollo
• 1975-1976 Buick Skyhawk
• 1975-1977 Buick Skylark
• 1975 Oldsmobile Cutlass
• 1975 Oldsmobile Cutlass Supreme
• 1975-1976 Oldsmobile Starfire
• 1975 Oldsmobile Vista Cruiser
• 1976-1984 Buick Electra
• 1976-1984 Buick LeSabre
• 1976 Buick Skylark | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Oldsmobile 98 | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Oldsmobile Custom Cruiser | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1977-1981 Oldsmobile Cutlass
• 1976 Oldsmobile Cutlass | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Oldsmobile Cutlass Salon | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1977-1984 Oldsmobile Cutlass Supreme
• 1976 Oldsmobile Cutlass Tiara | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Oldsmobile Toronado | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1976 Pontiac Sunbird
• 1976 Pontiac Ventura | Note: Early 1976 Gap at .080 (in) 2.0 (mm) Late 1976 Gap at .060 (in) 1.5 (mm)
• 1977-1981 Pontiac Bonneville
• 1977-1981 Pontiac Catalina
• 1977-1978 Pontiac Grand Safari
• 1977 Pontiac LeMans
• 1977 Pontiac Phoenix
• 1983 Buick Regal
• 1980-1983 Oldsmobile Cutlass Cruiser
• 1985 Oldsmobile Cutlass Salon
• 1981 Pontiac Laurentian