Upgrade your vehicle's performance with the Autolite 5184 Copper Resistor Spark Plug, engineered for optimal ignition performance in both domestic and foreign vehicles. Designed with a high-quality copper core, this spark plug offers quick starts, smoother acceleration, and enhanced fuel efficiency. Trusted by both automotive professionals and DIY enthusiasts, Autolite spark plugs serve as the perfect OE replacement for consistent and reliable functionality.

The Autolite 5184 isn't just a spark plug; it's a commitment to quality and affordability, making it a top choice for owners of Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. The copper core and nickel-plated electrodes ensure long-lasting performance and longevity, effectively reducing misfires and ensuring peak engine efficiency. To maintain your vehicle's optimal operation, consider replacing your spark plugs if you experience poor fuel consumption or rough idling.

• Delivers quick, reliable starts
• Improves fuel economy and acceleration
• OE fit and performance at a value price
• Compatible with multiple GM vehicles
• Durable copper core for extended life

Center Electrode Core Material:	Copper
Center Electrode Tip Material:	Nickel
Electrical Terminal Type:	Stud
Ground Electrode Tip Design:	Tapered
Hex Size:	5/8in
Insulator Material:	Ceramic
Pre-Gap Size:	0.060
Reach:	0.750
Thread Diameter:	14.0

• AC-Delco: 41-630
• Champion Spark Plug: 89

• 1985 Buick Riviera
• 1985-1990 Oldsmobile Custom Cruiser
• 1985-1987 Oldsmobile Cutlass Salon
• 1986 Cadillac Fleetwood
• 1985-1989 Buick Electra
• 1985-1990 Buick LeSabre
• 1985-1988 Oldsmobile Cutlass Supreme
• 1985 Oldsmobile Delta 88
• 1985 Oldsmobile Toronado
• 1986-1987 Buick Regal
• 1986-1990 Chevrolet Caprice
• 1986 Pontiac Parisienne
• 1987-1990 Cadillac Brougham
• 1987-1989 Pontiac Safari