Spark Plug Cadillac 49-55, Corvette 55-61, Chevrolet 49-70, Dodge 53-71, Pontiac 55-71 R45S

Spark Plug Cadillac 49-55, Corvette 55-61, Chevrolet 49-70, Dodge 53-71, Pontiac 55-71 AC DelcoR45S

• Roadmaster 1950-1952 5.2L 320cid L8
• Roadmaster Series 70 1946-1949 5.2L 320cid L8
• Special 1950-1953 4.1L 248cid L8, 4.3L 263cid L8
• Special Series 40 1946-1949 4.1L 248cid L8
• Super 1950-1952 4.3L 263cid L8
• Super Series 50 1946-1949 4.1L 248cid L8

• Deville 1953-1955 5.4 331cid V8
• Eldorado 1953-1955 5.4 331cid V8
• Series 60 Fleetwood 1950-1955 5.4 331cid V8
• Series 60 Special Fleetwood 1949 5.4 331cid V8
• Series 61 1949-1951 5.4 331cid V8
• Series 62 1949-1955 5.4 331cid V8
• Series 75 Fleetwood 1949-1955 5.4 331cid V8

• Bel Air 1950-1970 3.5L 216cid L6 1950-1953, 4.3L 265cid V8 1955-1957, 4.6L 283cid V8 1957-1964, 5.3L 327cid V8 1962-1964, 5.7L 348cid V8 1959-1961, 5.7L 350cid V8 1970, 6.6L 400cid V8 1970
• Camaro 5.0L 307cid V8 1969-1970, 5.7L 350cid V8 1970
• Caprice 5.0L 307cid V8 1969, 5.7L 350cid V8 1970, 6.6L 400cid V8 1970
• Corvette 4.3L 265cid V8, 4.6L 283cid V8 1957-1961
• Impala 4.6L 283cid V8 1958-1964, 5.0L 307cid V8 1969, 5.3L 327cid V8 1964, 5.7L 348cid V8 1958-1961, 5.7L 350cid V8 1970, 6.6L 400cid V8 1970
• Nova 5.0L 307cid V8 1969-1970, 5.7L 350cid V8 1969-1970

• Challenger 6.3L 383cid V8 1970-1971
• Charger 5.2L 318cid V8 1967, 6.3L 383cid V8 1967-1971
• Coronet 4.0L 241cid V8 1953-1954, 4.4L 270cid V8 1955-1956, 5.1L 315cid V8 1956, 5.2L 318cid V8 1967, 6.3L 383cid V8 1967-1971
• D100 D200 D300 Pickup 5.0L 303cid V8 1957
• Dart 6.3L 383cid V8 1967-1969

• 88 5.0L 303cid V8 1950, 5.3L 324cid V8 1954
• 98 5.0L 303cid V8 1950-1953, 5.3L 324cid V8 1954, 7.5L 455cid V8 1971-1974
• 442 7.5L 455cid V8 1971
• Cutlas 3.5L 215cid V8 1961, 5.4L 330cid V8 1964-1967, 5.7L 350cid V8 1968-1974, 6.6L 400cid V8 1967-1968, 7.5L 455cid V8 1970-1974

• Barracuda 5.2L 318cid V8 1967, 6.3L 383cid V8 1970-1971
• Belvedere 3.9L 239cid V8 1955, 4.0L 241cid V8 1955, 4.2L 259cid V8 1955, 5.3L 260cid V8 1955, 4.4L 270cid V8 1956, 4.5L 277cid V8 1956-1957, 4.9L 299cid V8 1957, 5.0L 313cid V8 1957, 5.2L 318cid V8 1967, 6.3L 383cid V8 1967-1970
• Cuda 6.3L 383cid V8 1970-1971
• Road Runner 6.3L 383cid V8 1968-1971, 6.6L 400cid V8 1975

• Bonneville 5.7L 347cid V8 1957, 5.7L 350cid V8 1971, 6.1L 370cid V8 1958, 6.4L 389cid V8 1959-1966, 6.6L 400cid V8 1969-1971
• Grand Prix 6.4L 389cid V8 1962-1966, 6.6L 400cid V8 1969-1971
• Firebird 5.3L 326cid V8 1967, 5.7L 326cid V8 1967, 5.7L 350cid V8 1968-1971, 6.6L 400 cid V8 1968-1971, 7.5L 455cid V8 1971

• Height: 1.1in
• Hex Size 13/16in 20.62mm
• Pre-Gap Size: 0.04in
• Seat Type: Flat
• Thread 0.55 In / 14mm
• Resistor Type: Yes

ACDelco Gold (Professional) Conventional Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These conventional spark plugs are designed for reliability and efficient performance. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ⚠ WARNING: Cancer and Reproductive Harm -