Article no.:
7401
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NGK Racing Spark Plug Box of 4 (UR4IX)
Take your vehicle's performance to the next level with the NGK Racing Spark Plug Box of 4 (UR4IX). Designed for the performance enthusiast, these spark plugs provide outstanding acceleration, high fuel efficiency, and durability.
With their iridium alloy construction, these spark plugs offer extreme ignitability and exceptional anti-fouling. The tapered cut ground electrode provides improved starting, idling, and throttle response, while the iridium fine wire center electrode's durability is six times harder than platinum.
- Recommended for modified or high-performance applications
- Upgrade to OE nickel alloy spark plugs
- Provides outstanding acceleration, high fuel efficiency, and durability
This product fits more vehicles than loaded. Please select your vehicle to see all fits.
| Make | Model | Year | Type |
|---|---|---|---|
| Buick | Century | 1980 | Base |
| Buick | Century | 1980 | Estate |
| Buick | Century | 1980 | Limited |
| Buick | Century | 1980 | Sport |
| Buick | Commercial Chassis | 1991 | Base |
| Buick | LeSabre | 1980 | Sport |
| Buick | Regal | 1980 | Base |
| Buick | Regal | 1980 | Limited |
| Buick | Regal | 1980 | Sport |
| Buick | Regal | 1981 | Sport |
| Buick | Regal | 1984 | Grand National |
| Buick | Regal | 1984 | T-Type |
| Buick | Regal | 1985 | Grand National |
| Buick | Regal | 1985 | T-Type |
| Buick | Regal | 1986 | Grand National |
| Buick | Regal | 1986 | T-Type |
| Buick | Regal | 1987 | GNX |
| Buick | Regal | 1987 | Grand National |
| Buick | Regal | 1987 | Limited |
| Buick | Riviera | 1980 | Base |
| Buick | Riviera | 1980 | S |
| Buick | Riviera | 1981 | Base |
| Buick | Riviera | 1981 | T-Type |
| Buick | Riviera | 1984 | Base |
| Buick | Riviera | 1984 | Luxury |
| Buick | Riviera | 1984 | T-Type |
| Buick | Riviera | 1985 | Base |
| Buick | Riviera | 1985 | Luxury |
| Buick | Riviera | 1985 | T-Type |
| Buick | Roadmaster | 1991 | Estate Wagon |
| Cadillac | Brougham | 1991 | Base |
| Cadillac | Brougham | 1991 | d'Elegance |
| Cadillac | Brougham | 1992 | Base |
| Cadillac | Brougham | 1992 | d'Elegance |
| Cadillac | Commercial Chassis | 1993 | Brougham |
| Cadillac | Fleetwood | 1993 | Base |
| Cadillac | Fleetwood | 1993 | Brougham |
| Chevrolet | C10 | 1980 | Big Ten |
| Chevrolet | C10 | 1980 | Cheyenne |
| Chevrolet | C10 | 1980 | Custom Deluxe |
| Chevrolet | C10 | 1980 | Scottsdale |
| Chevrolet | C10 | 1980 | Silverado |
| Chevrolet | C10 | 1981 | Cheyenne |
| Chevrolet | C10 | 1981 | Custom |
| Chevrolet | C10 | 1981 | Deluxe |
| Chevrolet | C10 | 1981 | Scottsdale |
| Chevrolet | C10 | 1981 | Silverado |
| Chevrolet | C10 | 1982 | Custom |
| Chevrolet | C10 | 1982 | Scottsdale |
| Chevrolet | C10 | 1982 | Silverado |
| Chevrolet | C10 | 1983 | Custom |
| Chevrolet | C10 | 1983 | Scottsdale |
| Chevrolet | C10 | 1983 | Silverado |
| Chevrolet | C10 | 1984 | Custom |
| Chevrolet | C10 | 1984 | Scottsdale |
| Chevrolet | C10 | 1984 | Silverado |
| Chevrolet | C10 | 1985 | Custom |
| Chevrolet | C10 | 1985 | Scottsdale |
| Chevrolet | C10 | 1985 | Silverado |
| Chevrolet | C10 | 1986 | Custom |
| Chevrolet | C10 | 1986 | Scottsdale |
| Chevrolet | C10 | 1986 | Silverado |
| Chevrolet | C10 Suburban | 1980 | Custom Deluxe |
| Chevrolet | C10 Suburban | 1980 | Scottsdale |
| Chevrolet | C10 Suburban | 1980 | Silverado |
| Chevrolet | C10 Suburban | 1981 | Custom |
| Chevrolet | C10 Suburban | 1981 | Deluxe |
| Chevrolet | C10 Suburban | 1982 | Custom |
| Chevrolet | C10 Suburban | 1982 | Scottsdale |
| Chevrolet | C10 Suburban | 1982 | Silverado |
| Chevrolet | C10 Suburban | 1983 | Custom |
| Chevrolet | C10 Suburban | 1983 | Silverado |
| Chevrolet | C10 Suburban | 1984 | Custom |
| Chevrolet | C10 Suburban | 1984 | Scottsdale |
| Chevrolet | C10 Suburban | 1984 | Silverado |
| Chevrolet | C10 Suburban | 1985 | Custom |
| Chevrolet | C10 Suburban | 1985 | Scottsdale |
| Chevrolet | C10 Suburban | 1985 | Silverado |
| Chevrolet | C10 Suburban | 1986 | Custom |
| Chevrolet | C10 Suburban | 1986 | Scottsdale |
| Chevrolet | C10 Suburban | 1986 | Silverado |
| Chevrolet | C20 | 1980 | Cheyenne |
| Chevrolet | C20 | 1980 | Custom Deluxe |
| Chevrolet | C20 | 1980 | Scottsdale |
| Chevrolet | C20 | 1980 | Silverado |
| Chevrolet | C20 | 1981 | Cheyenne |
| Chevrolet | C20 | 1981 | Custom |
| Chevrolet | C20 | 1981 | Deluxe |
| Chevrolet | C20 | 1981 | Scottsdale |
| Chevrolet | C20 | 1981 | Silverado |
| Chevrolet | C20 | 1982 | Custom |
| Chevrolet | C20 | 1982 | Scottsdale |
| Chevrolet | C20 | 1982 | Silverado |
| Chevrolet | C20 | 1983 | Custom |
| Chevrolet | C20 | 1983 | Scottsdale |
| Chevrolet | C20 | 1983 | Silverado |
| Chevrolet | C20 | 1984 | Custom |
| Chevrolet | C20 | 1984 | Scottsdale |
| Chevrolet | C20 | 1984 | Silverado |
| Chevrolet | C20 | 1985 | Custom |
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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