Article no.:
7516
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NGK Iridium IX Spark Plug Box of 4 (YR5IX)
Unlock the full potential of your vehicle with the NGK Iridium IX Spark Plug Box of 4 (YR5IX). Specifically designed for performance enthusiasts, these spark plugs deliver 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 (YR5IX). 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 | 1973 | Base |
| Buick | Apollo | 1974 | Base |
| Chevrolet | Bel Air | 1970 | Base |
| Chevrolet | Bel Air | 1972 | Base |
| Chevrolet | Bel Air | 1973 | Base |
| Chevrolet | Bel Air | 1974 | Base |
| Chevrolet | Biscayne | 1970 | Base |
| Chevrolet | Biscayne | 1972 | Base |
| Chevrolet | Blazer | 1970 | Base |
| Chevrolet | Blazer | 1971 | Base |
| Chevrolet | Blazer | 1972 | Base |
| Chevrolet | Blazer | 1973 | Base |
| Chevrolet | Blazer | 1974 | Base |
| Chevrolet | Brookwood | 1972 | Base |
| Chevrolet | C10 | 1975 | Cheyenne |
| Chevrolet | C10 | 1975 | Custom Deluxe |
| Chevrolet | C10 | 1975 | Scottsdale |
| Chevrolet | C10 | 1975 | Silverado |
| Chevrolet | C10 | 1976 | Cheyenne |
| Chevrolet | C10 | 1976 | Custom Deluxe |
| Chevrolet | C10 | 1976 | Scottsdale |
| Chevrolet | C10 | 1976 | Silverado |
| Chevrolet | C10 | 1977 | Cheyenne |
| Chevrolet | C10 | 1977 | Custom Deluxe |
| Chevrolet | C10 | 1977 | Scottsdale |
| Chevrolet | C10 | 1977 | Silverado |
| Chevrolet | C10 | 1978 | Big Ten |
| Chevrolet | C10 | 1978 | Cheyenne |
| Chevrolet | C10 | 1978 | Custom Deluxe |
| Chevrolet | C10 | 1978 | Scottsdale |
| Chevrolet | C10 | 1978 | Silverado |
| Chevrolet | C10 | 1979 | Big Ten |
| Chevrolet | C10 | 1979 | Cheyenne |
| Chevrolet | C10 | 1979 | Custom Deluxe |
| Chevrolet | C10 | 1979 | Scottsdale |
| Chevrolet | C10 | 1979 | Silverado |
| Chevrolet | C10 | 1980 | Big Ten |
| Chevrolet | C10 | 1980 | Cheyenne |
| Chevrolet | C10 | 1980 | Custom Deluxe |
| Chevrolet | C10 | 1980 | Scottsdale |
| Chevrolet | C10 | 1980 | 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 | 1985 | Custom |
| Chevrolet | C10 | 1985 | Scottsdale |
| Chevrolet | C10 | 1985 | Silverado |
| Chevrolet | C10 | 1986 | Custom |
| Chevrolet | C10 | 1986 | Scottsdale |
| Chevrolet | C10 | 1986 | Silverado |
| Chevrolet | C10 Pickup | 1970 | Base |
| Chevrolet | C10 Pickup | 1971 | Base |
| Chevrolet | C10 Pickup | 1972 | Base |
| Chevrolet | C10 Pickup | 1973 | Base |
| Chevrolet | C10 Pickup | 1974 | Base |
| Chevrolet | C10 Suburban | 1970 | Base |
| Chevrolet | C10 Suburban | 1971 | Base |
| Chevrolet | C10 Suburban | 1972 | Base |
| Chevrolet | C10 Suburban | 1973 | Base |
| Chevrolet | C10 Suburban | 1974 | Base |
| Chevrolet | C10 Suburban | 1975 | Custom Deluxe |
| Chevrolet | C10 Suburban | 1975 | Scottsdale |
| Chevrolet | C10 Suburban | 1975 | Silverado |
| Chevrolet | C10 Suburban | 1976 | Custom Deluxe |
| Chevrolet | C10 Suburban | 1976 | Scottsdale |
| Chevrolet | C10 Suburban | 1976 | Silverado |
| Chevrolet | C10 Suburban | 1977 | Custom Deluxe |
| Chevrolet | C10 Suburban | 1977 | Scottsdale |
| Chevrolet | C10 Suburban | 1977 | Silverado |
| Chevrolet | C10 Suburban | 1978 | Custom Deluxe |
| Chevrolet | C10 Suburban | 1978 | Scottsdale |
| Chevrolet | C10 Suburban | 1978 | Silverado |
| Chevrolet | C10 Suburban | 1979 | Custom Deluxe |
| Chevrolet | C10 Suburban | 1979 | Scottsdale |
| Chevrolet | C10 Suburban | 1979 | 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 | 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 | 1975 | Cheyenne |
| Chevrolet | C20 | 1975 | Custom Deluxe |
| Chevrolet | C20 | 1975 | Scottsdale |
| Chevrolet | C20 | 1975 | Silverado |
| Chevrolet | C20 | 1976 | Cheyenne |
| Chevrolet | C20 | 1976 | Custom Deluxe |
| Chevrolet | C20 | 1976 | Scottsdale |
| Chevrolet | C20 | 1976 | Silverado |
| Chevrolet | C20 | 1977 | Cheyenne |
| Chevrolet | C20 | 1977 | Custom Deluxe |
| Chevrolet | C20 | 1977 | Scottsdale |
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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