# NGK Single Iridium Spark Plug Box of 4 (UR45IX) NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The 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. For even greater performance consider upgrading to an NGK Ruthenium HX plug. - RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs - Trivalent metal plating for superior anti-corrosion and anti-seizing properties - Outstanding acceleration, high fuel efficiency and durability - Fine iridium tip ensures durable and consistent spark This Part Fits: Year Make Model Submodel 1980-1982 American Motors Concord Base 1980-1982 American Motors Concord DL 1980-1982 American Motors Concord Limited 1981-1983 American Motors Eagle Base 1981-1982 American Motors Eagle DL Kammback 1981-1983 American Motors Eagle DL SX4 1981-1982 American Motors Eagle Kammback 1981-1983 American Motors Eagle Limited 1981-1983 American Motors Eagle SX4 1980-1982 American Motors Spirit Base 1980-1982 American Motors Spirit DL 1980 American Motors Spirit Limited 1975 Buick Apollo Base 1975 Buick Apollo SR 1975-1977,1980-1981 Buick Century Base 1975-1979,1982-1985 Buick Century Custom 1980-1981,1984 Buick Century Estate 1985 Buick Century Estate Wagon 1976 Buick Century Indianapolis 500 Pace Car 1978-1985 Buick Century Limited 1975 Buick Century Luxus 1984 Buick Century Olympia Limited 1977-1979 Buick Century Special 1978-1981 Buick Century Sport 1983-1985 Buick Century T-Type 1977-1979 Buick Electra 225 1980 Buick Electra Estate Wagon 1977-1985 Buick Electra Limited 1978-1985 Buick Electra Park Avenue 1985 Buick Electra T-Type 1978-1980 Buick Estate Wagon Base 1975,1977-1981 Buick LeSabre Base 1985 Buick LeSabre Collector's Edition 1975-1978,1982-1985 Buick LeSabre Custom 1977 Buick LeSabre Custom Sport 1979-1985 Buick LeSabre Limited 1982 Buick LeSabre Limited Edition F/E 1978,1981 Buick LeSabre Sport 1975-1987 Buick Regal Base 1982-1983 Buick Regal Estate Wagon 1978-1987 Buick Regal Limited 1982 Buick Regal Limited Turbo 1978,1982 Buick Regal Sport 1976-1977 Buick Regal SR 1983 Buick Regal T-Type 1977-1978,1981-1984 Buick Riviera Base 1982 Buick Riviera Limited Edition 1983-1984 Buick Riviera Luxury 1978 Buick Riviera LXXV Anniversary Edition 1981-1983 Buick Riviera T-Type 1983 Buick Riviera XX Anniversary Edition 1977-1980 Buick Skyhawk Base 1980 Buick Skyhawk Designers' Accent Edition 1979-1980 Buick Skyhawk Road Hawk 1977-1980 Buick Skyhawk S 1975-1982 Buick Skylark Base 1978-1979 Buick Skylark Custom 1980-1982 Buick Skylark Limited 1976-1979 Buick Skylark S 1978,1980-1982 Buick Skylark Sport 1975-1977 Buick Skylark SR 1980-1982 Cadillac DeVille Base 1980-1982 Cadillac DeVille Cabriolet 1980-1982 Cadillac DeVille d'Elegance 1981-1982 Cadillac Eldorado Base 1981-1982 Cadillac Eldorado Biarritz 1981 Cadillac Eldorado Brougham d'Elegance 1981-1982 Cadillac Eldorado Cabriolet 1982 Cadillac Eldorado Touring 1980-1982 Cadillac Fleetwood Brougham 1980-1982 Cadillac Fleetwood Brougham d'Elegance 1981-1982 Cadillac Seville Base 1981-1982 Cadillac Seville Elegante 1975 Checker Marathon Aerobus 1975,1977,1979-1982 Checker Marathon Base 1975,1977,1979-1982 Checker Marathon Deluxe 1971 Chevrolet Brookwood Base 1980 Chevrolet Camaro Base 1980-1981 Chevrolet Camaro Berlinetta 1980 Chevrolet Camaro Rally Sport 1981-1983 Chevrolet Camaro Sport 1980-1984 Chevrolet Caprice Classic 1981-1982 Chevrolet Caprice Classic Estate 1980-1981 Chevrolet Caprice Classic Landau 1980 Chevrolet Caprice Classic Sport 1982-1983 Chevrolet Celebrity Base 1982-1983 Chevrolet Celebrity CL 1982 Chevrolet Celebrity CS 1980-1983 Chevrolet Citation Base 1980 Chevrolet Citation Club 1980 Chevrolet Citation Custom 1980-1983 Chevrolet Citation X-11 1978-1984 Chevrolet El Camino Base 1978,1981-1984 Chevrolet El Camino Conquista 1979-1981 Chevrolet El Camino Royal Knight 1980-1984 Chevrolet El Camino SS 1980-1984 Chevrolet Impala Base 1981-1982 Chevrolet Impala Estate 1980 Chevrolet Impala Sport 1978-1981 Chevrolet Malibu Base 1978-1983 Chevrolet Malibu Classic 1979-1980 Chevrolet Malibu Classic Estate 1978-1981 Chevrolet Malibu Classic Landau 1979-1980 Chevrolet Malibu Classic Sport 1979-1980 Chevrolet Malibu Estate 1979 Chevrolet Malibu Landau 1979 Chevrolet Malibu Police 1979-1980 Chevrolet Malibu Sport 1979,1981-1984 Chevrolet Monte Carlo Base 1983 Chevrolet Monte Carlo CL 1978-1981 Chevrolet Monte Carlo Landau 1978,1980 Chevrolet Monte Carlo Sport 1975,1978-1980 Chevrolet Monza 2+2 1978-1980 Chevrolet Monza 2+2 Sport 1978-1980 Chevrolet Monza 2+2 Spyder 1978-1980 Chevrolet Monza Base 1975,1978-1979 Chevrolet Monza S 1978 Chevrolet Monza Sport 1980 Chevrolet Monza Spyder 1970 Chevrolet Nova Base 1985 Excalibur Phaeton Anniversary 1971-1984,1986-1989 Excalibur Phaeton Base 1989-1993 Ford Bronco Custom 1989-1996 Ford Bronco Eddie Bauer 1990-1996 Ford Bronco XL 1989-1992,1994-1996 Ford Bronco XLT 1993 Ford Bronco XLT Lariat 1992 Ford Bronco XLT Nite 1995-1996 Ford Bronco XLT Sport 1977 Ford Custom 500 Base 1977 Ford Custom 500 Ranch Wagon 1992-1996 Ford E-150 Econoline Base 1989-1991 Ford E-150 Econoline Custom 1989-1996 Ford E-150 Econoline XL 1986 Ford E-150 Econoline Club Wagon Base 1992-1996 Ford E-150 Econoline Club Wagon Chateau 1987-1996 Ford E-150 Econoline Club Wagon Custom 1986-1991 Ford E-150 Econoline Club Wagon XL 1986-1996 Ford E-150 Econoline Club Wagon XLT 1989-1991 Ford E-250 Econoline Custom 1989-1991 Ford E-250 Econoline XL 1989-1992 Ford F-150 Custom 1995-1996 Ford F-150 Eddie Bauer 1995-1996 Ford F-150 Special 1989-1996 Ford F-150 XL 1993-1996 Ford F-150 XLT 1989-1992 Ford F-150 XLT Lariat 1989-1992 Ford F-250 Custom 1995-1996 Ford F-250 Eddie Bauer 1995-1996 Ford F-250 Special 1989-1996 Ford F-250 XL 1993-1996 Ford F-250 XLT 1989-1992 Ford F-250 XLT Lariat 1978-1982 Ford Fairmont Base 1978-1982 Ford Fairmont Futura 1981 Ford Fairmont S 1977-1980 Ford Granada Base 1978-1980 Ford Granada ESS 1977-1980 Ford Granada Ghia 1981 Ford Granada GL 1981 Ford Granada GLX 1981 Ford Granada L 1977-1982 Ford LTD Base 1977-1985 Ford LTD Country Squire 1980-1985 Ford LTD Crown Victoria 1977-1979 Ford LTD Landau 1985 Ford LTD LX Brougham 1980-1982 Ford LTD S 1977-1979 Ford LTD II Base 1977-1978 Ford LTD II Brougham 1979 Ford LTD II Landau 1977-1979 Ford LTD II S 1977 Ford LTD II Squire 1977 Ford Maverick Base 1977 Ford Maverick Grabber 1979-1981 Ford Mustang Base 1981 Ford Mustang Cobra 1979-1981 Ford Mustang Ghia 1982 Ford Mustang GL 1982 Ford Mustang GLX 1982,1984-1985,1987-1995 Ford Mustang GT 1984 Ford Mustang GT-350 20th Anniversary 1995 Ford Mustang GTS 1982,1984 Ford Mustang L 1984,1987-1993 Ford Mustang LX 1977-1978 Ford Mustang II Base 1977-1978 Ford Mustang II Ghia 1977-1978 Ford Mustang II Mach 1 1976 Ford P-400 Base 1976 Ford P-400 Custom 1976-1977 Ford P-500 Base 1976-1977 Ford P-500 Custom 1975-1979 Ford Ranchero 500 1975-1979 Ford Ranchero GT 1975-1979 Ford Ranchero Squire 1974,1977-1982,1984-1985,1991-1992 Ford Thunderbird Base 1978 Ford Thunderbird Diamond Jubilee 1984-1985 Ford Thunderbird Elan 1984-1985 Ford Thunderbird Fila 1979,1981-1982 Ford Thunderbird Heritage ## Details - **Price:** 74.61 CAD - **Vendor:** NGK - **Type:** Spark Plugs ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 74.61 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - out of package - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/ngk-single-iridium-spark-plug-box-of-4-ur45ix) > Updated: 2026-06-27