NOS AC Delco ACNITER II R45TSX* Spark Plugs
type: Unknown Type
Vendor: CorvairFarmer
Description:
AC Delco ACNITER II R45TSX* Spark Plugs – SOLD EACH
Part Identification
This AC Delco ACNITER II R45TSX* spark plug (GM PN 5613575) is a copper-core, resistor-type plug designed to suppress ignition noise and ensure stable performance in high-temperature GM V8 engines. The distinctive green band and “AC” headstamp confirm OEM authenticity.
Specific Fitment Chart
| Make | Model | Engine | Years |
|---|---|---|---|
| Chevrolet | Camaro | 5.0L V8 | 1982–1987 |
| Chevrolet | Corvette | 5.7L V8 | 1978–1986 |
| GMC | K1500/K2500 | 5.0L, 5.7L V8 | 1985–1990 |
| Pontiac | Firebird | 5.0L, 5.7L V8 | 1980–1986 |
| Pontiac | Parisienne | 5.7L V8 | 1983–1985 |
| Oldsmobile | 88, 98, Cruiser | 5.7L V8 | 1980–1985 |
Physical & Performance Features
-
14 mm thread, 13/16″ hex for standard socket fit
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Resistor core to protect electronics and reduce RFI
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Extended “T”-tip electrode for improved combustion and anti-fouling
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Copper center electrode for strong spark and efficient ignition
Cross-References
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Champion RS14X5
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Autolite 146
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Bosch WR9LC+
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Denso W14PR
