8 pc Autolite Iridium XP XP666 Spark Plugs for Ignition Wire Secondary Fits select: 1975-1987 BUICK REGAL, 1975-1985 PONTIAC FIREBIRD

• 8 pc Autolite Iridium XP XP666 Spark Plug
• REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, and enables better performance so that your engine runs at its best. The durable shell reliably protects the spark plug from damage, ensuring long-lasting sparking capabilities. The center and ground electrodes promote sharper spark focus for fewer misfires
• IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug. The damage-tolerant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency
• IRIDIUM ENHANCED FOR OPTIMAL PERFORMANCE: When you're passionate about performance, you need a technologically advanced plug. Autolite Iridium XP utilizes an iridium-enhanced 0.6 mm finewire and proprietary platinum sidewire for improved durability and a more focused ignition for better overall ignitability providing optimum performance. Autolite produces exceptional, quality spark plugs for foreign and domestic vehicles, no matter the make or model
• TRUST IN AUTOLITE: Autolite started in 1911 as a buggy lamp manufacturer, but by the 30s, had found its niche in the manufacturing of spark plugs. Their expertise can be seen in the sheer number of plugs made, which in 2007 was over 10 billion spark plugs. Ever innovative and committed to their customers, Autolite continues to find new designs to exceed expectations and deliver on the challenging requirements of modern engines and emissions standards

Fits Select:
1978-1987 BUICK REGAL 6 Cyl 3.8 L
1975-1978 PONTIAC FIREBIRD 8 Cyl 6.6 L
1985-1993 CHEVROLET S TRUCK 4 Cyl 2.5 L
1977-1987 OLDSMOBILE CUTLASS SUPREME 6 Cyl 3.8 L
1979-1981 PONTIAC FIREBIRD 8 Cyl 4.9 L
1984-1988 PONTIAC FIERO 4 Cyl 2.5 L
1977 FORD LTD 8 Cyl 6.6 L
1982-1990 CHEVROLET CELEBRITY 4 Cyl 2.5 L
1977 FORD THUNDERBIRD 8 Cyl 5.8 L
1978-1979 FORD LTD 8 Cyl 5 L
1978-1979 FORD THUNDERBIRD 8 Cyl 5 L
1985 OLDSMOBILE 98 6 Cyl 3.8 L
1977-1980 PONTIAC BONNEVILLE 8 Cyl 4.9 L
1986-1992 OLDSMOBILE CUTLASS CIERA 4 Cyl 2.5 L
1977-1979 FORD MUSTANG 8 Cyl 5 L
1977-1979 PONTIAC GRAND PRIX 8 Cyl 4.9 L
1980 AMERICAN MOTORS JEEP 4 Cyl 2.5 L
1985-1991 PONTIAC GRAND AM 4 Cyl 2.5 L
1975-1976 BUICK ELECTRA 8 Cyl 7.5 L
1985-1990 GMC S TRUCK 4 Cyl 2.5 L
1985 BUICK ELECTRA 6 Cyl 3.8 L
1991-1993 GMC SONOMA 4 Cyl 2.5 L
1975-1976,1980 BUICK LESABRE 8 Cyl 5.7 L
1980-1983 JEEP JEEP 4 Cyl 2.5 L
1982-1984 BUICK CENTURY 6 Cyl 3 L
and more - add your vehicle to our fit widget to check