Article no.:
7293
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NGK Iridium IX Spark Plug Box of 4 (XR45IX)
Take your vehicle's performance to the next level with the NGK Iridium IX Spark Plug Box of 4 (XR45IX). These spark plugs are specifically designed for the performance enthusiast, providing outstanding acceleration, high fuel efficiency, and durability.
- Extreme ignitability and exceptional anti-fouling
- Tapered cut ground electrode for improved starting, idling, and throttle response
- Iridium fine wire center electrode's durability is six times harder than platinum
- Iridium alloy's extremely high melting point is perfect for today's engines
Upgrade your vehicle's performance with the NGK Iridium IX Spark Plug Box of 4 (XR45IX). Recommended for modified or high-performance applications, or as an upgrade to OE nickel alloy spark plugs.
This product fits more vehicles than loaded. Please select your vehicle to see all fits.
| Make | Model | Year | Type |
|---|---|---|---|
| Buick | Apollo | 1975 | Base |
| Buick | Apollo | 1975 | SR |
| Buick | Century | 1975 | Base |
| Buick | Century | 1975 | Custom |
| Buick | Century | 1975 | Special |
| Buick | Century | 1976 | Base |
| Buick | Century | 1976 | Custom |
| Buick | Century | 1976 | Special |
| Buick | Century | 1977 | Base |
| Buick | Century | 1977 | Custom |
| Buick | Electra | 1977 | 225 |
| Buick | Electra | 1977 | Limited |
| Buick | Electra | 1978 | 225 |
| Buick | Electra | 1978 | Limited |
| Buick | Electra | 1978 | Park Avenue |
| Buick | Electra | 1979 | 225 |
| Buick | Electra | 1979 | Limited |
| Buick | Electra | 1979 | Park Avenue |
| Buick | Electra | 1980 | Estate Wagon |
| Buick | Electra | 1980 | Limited |
| Buick | Electra | 1980 | Park Avenue |
| Buick | Electra | 1981 | Estate Wagon |
| Buick | Electra | 1981 | Limited |
| Buick | Electra | 1981 | Park Avenue |
| Buick | Electra | 1982 | Estate Wagon |
| Buick | Electra | 1982 | Limited |
| Buick | Electra | 1982 | Park Avenue |
| Buick | Electra | 1983 | Estate Wagon |
| Buick | Electra | 1983 | Limited |
| Buick | Electra | 1983 | Park Avenue |
| Buick | Electra | 1984 | Estate Wagon |
| Buick | Electra | 1984 | Limited |
| Buick | Electra | 1984 | Park Avenue |
| Buick | Estate Wagon | 1977 | Base |
| Buick | Estate Wagon | 1978 | Base |
| Buick | Estate Wagon | 1979 | Base |
| Buick | Estate Wagon | 1980 | Base |
| Buick | Estate Wagon | 1981 | Base |
| Buick | Estate Wagon | 1982 | Base |
| Buick | Estate Wagon | 1983 | Base |
| Buick | LeSabre | 1976 | Base |
| Buick | LeSabre | 1977 | Base |
| Buick | LeSabre | 1977 | Custom |
| Buick | LeSabre | 1977 | Custom Sport |
| Buick | LeSabre | 1978 | Base |
| Buick | LeSabre | 1978 | Custom |
| Buick | LeSabre | 1979 | Base |
| Buick | LeSabre | 1979 | Limited |
| Buick | LeSabre | 1980 | Base |
| Buick | LeSabre | 1980 | Limited |
| Buick | LeSabre | 1981 | Base |
| Buick | LeSabre | 1981 | Limited |
| Buick | LeSabre | 1981 | Sport |
| Buick | LeSabre | 1982 | Custom |
| Buick | LeSabre | 1982 | Limited |
| Buick | LeSabre | 1982 | Limited Edition F/E |
| Buick | LeSabre | 1983 | Custom |
| Buick | LeSabre | 1983 | Limited |
| Buick | LeSabre | 1984 | Custom |
| Buick | LeSabre | 1984 | Limited |
| Buick | Regal | 1975 | Base |
| Buick | Regal | 1976 | Base |
| Buick | Regal | 1976 | SR |
| Buick | Regal | 1977 | Base |
| Buick | Regal | 1977 | SR |
| Buick | Riviera | 1977 | Base |
| Buick | Riviera | 1978 | Base |
| Buick | Riviera | 1978 | LXXV Anniversary Edition |
| Buick | Riviera | 1979 | Base |
| Buick | Riviera | 1979 | S |
| Buick | Riviera | 1980 | Base |
| Buick | Riviera | 1980 | S |
| Buick | Riviera | 1981 | Base |
| Buick | Riviera | 1981 | T-Type |
| Buick | Riviera | 1982 | Base |
| Buick | Riviera | 1982 | Limited Edition |
| Buick | Riviera | 1983 | Base |
| Buick | Riviera | 1983 | Luxury |
| Buick | Riviera | 1983 | XX Anniversary Edition |
| Buick | Riviera | 1984 | Base |
| Buick | Riviera | 1984 | Luxury |
| Buick | Skyhawk | 1975 | Base |
| Buick | Skyhawk | 1975 | S |
| Buick | Skyhawk | 1976 | Base |
| Buick | Skyhawk | 1976 | S |
| Buick | Skylark | 1975 | Base |
| Buick | Skylark | 1975 | SR |
| Buick | Skylark | 1976 | Base |
| Buick | Skylark | 1976 | S |
| Buick | Skylark | 1976 | SR |
| Buick | Skylark | 1977 | Base |
| Buick | Skylark | 1977 | S |
| Buick | Skylark | 1977 | SR |
| Cadillac | Eldorado | 1979 | Base |
| Cadillac | Eldorado | 1979 | Biarritz |
| Cadillac | Eldorado | 1979 | Cabriolet |
| Cadillac | Eldorado | 1980 | Base |
| Cadillac | Eldorado | 1980 | Biarritz |
| Cadillac | Eldorado | 1980 | Cabriolet |
| Cadillac | Seville | 1976 | Base |
NGK manufactures spark plugs and spark plug wires, as well as glow plugs for diesel applications. Their range of spark plugs cover everything from OEM replacement to Ultimate Performance plugs, and are available as traditional copper, platinum, or iridium tips. NGK’s reputation as an OEM supplier for many car manufacturers makes them a top choice for spark plugs. Few brands can make that claim and have the quality to back it up.
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