COMP Cams Rocker CS 1.55 7/16in Ultra Pro

The next design evolution of the Hi-Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And they work with most diameter springs and retainers. The new XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI optimization for drag and circle track applications.
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This Part Fits:

Year	Make	Model	Submodel
1973-1975	Buick	Apollo	Base
1975	Buick	Apollo	SR
1972-1973	Buick	Centurion	Base
1973-1977,1980	Buick	Century	Base
1975-1979	Buick	Century	Custom
1980	Buick	Century	Estate
1976	Buick	Century	Indianapolis 500 Pace Car
1978-1980	Buick	Century	Limited
1973-1975	Buick	Century	Luxus
1978-1979	Buick	Century	Special
1978	Buick	Century	Sport
1991-1993	Buick	Commercial Chassis	Base
1976-1977	Buick	Electra	225
1976-1977	Buick	Electra	Limited
1973	Buick	Estate Wagon	Base
1972	Buick	GS	Base
1972-1974,1977-1978	Buick	LeSabre	Base
1972-1973,1977-1978	Buick	LeSabre	Custom
1977	Buick	LeSabre	Custom Sport
1974	Buick	LeSabre	Luxus
1973-1980	Buick	Regal	Base
1978-1980	Buick	Regal	Limited
1976-1977	Buick	Regal	SR
1992-1993	Buick	Roadmaster	Base
1991-1993	Buick	Roadmaster	Estate Wagon
1992-1993	Buick	Roadmaster	Limited
1972	Buick	Skylark	350
1972,1975-1979	Buick	Skylark	Base
1972,1978-1979	Buick	Skylark	Custom
1976-1979	Buick	Skylark	S
1978	Buick	Skylark	Sport
1975-1977	Buick	Skylark	SR
1972	Buick	Sportwagon	Base
1990-1992	Cadillac	Brougham	Base
1990-1992	Cadillac	Brougham	d'Elegance
1992-1993	Cadillac	Commercial Chassis	Brougham
1980	Cadillac	Eldorado	Base
1980	Cadillac	Eldorado	Biarritz
1980	Cadillac	Eldorado	Cabriolet
1993	Cadillac	Fleetwood	Base
1993	Cadillac	Fleetwood	Brougham
1980	Cadillac	Seville	Base
1980	Cadillac	Seville	Elegante
1975	Checker	Marathon	Aerobus
1975-1982	Checker	Marathon	Base
1975-1982	Checker	Marathon	Deluxe
1955-1975	Chevrolet	Bel Air	Base
1955-1956	Chevrolet	Bel Air	Beauville
1955-1957	Chevrolet	Bel Air	Nomad
1958-1972	Chevrolet	Biscayne	Base
1960	Chevrolet	Biscayne	Fleetmaster
1958-1961,1969-1972	Chevrolet	Brookwood	Base
1967-1980,1988	Chevrolet	Camaro	Base
1979-1986	Chevrolet	Camaro	Berlinetta
1985-1990	Chevrolet	Camaro	Iroc-Z
1973-1978,1987	Chevrolet	Camaro	LT
1976-1978	Chevrolet	Camaro	LT Rally Sport
1976-1980	Chevrolet	Camaro	Rally Sport
1967-1973,1975,1989-1992	Chevrolet	Camaro	RS
1992	Chevrolet	Camaro	RS Heritage Edition
1981-1987	Chevrolet	Camaro	Sport
1967-1972	Chevrolet	Camaro	SS
1970-1974,1977-1987,1991-1992	Chevrolet	Camaro	Z28
1992	Chevrolet	Camaro	Z28 Heritage Edition
1982	Chevrolet	Camaro	Z28 Indianapolis 500 Pace Car
1966-1972,1986-1992	Chevrolet	Caprice	Base
1973-1996	Chevrolet	Caprice	Classic
1986-1990	Chevrolet	Caprice	Classic Brougham
1976-1978,1981-1982	Chevrolet	Caprice	Classic Estate
1976-1981	Chevrolet	Caprice	Classic Landau
1993-1994	Chevrolet	Caprice	Classic LS
1987-1990	Chevrolet	Caprice	Classic LS Brougham
1991-1993	Chevrolet	Caprice	Classic LTZ
1975-1976,1979-1980	Chevrolet	Caprice	Classic Sport
1973-1974	Chevrolet	Caprice	Estate
1975	Chevrolet	Caprice	Estate Wagon
1967-1968	Chevrolet	Chevelle	300
1967-1969	Chevrolet	Chevelle	300 Deluxe
1964-1968,1970-1972	Chevrolet	Chevelle	Base
1967-1972	Chevrolet	Chevelle	Concours
1969-1972	Chevrolet	Chevelle	Concours Estate
1965-1967,1973	Chevrolet	Chevelle	Deluxe
1969-1972	Chevrolet	Chevelle	Greenbrier
1968-1972	Chevrolet	Chevelle	Malibu
1968-1972	Chevrolet	Chevelle	Nomad
1964-1972	Chevrolet	Chevelle	SS
1963-1967	Chevrolet	Chevy II	Base
1963-1968	Chevrolet	Chevy II	Nova
1964-1967	Chevrolet	Chevy II	Nova SS
1988	Chevrolet	Corvette	35th Anniversary Edition
1955-1974,1977-1982,1984-1991	Chevrolet	Corvette	Base
1982	Chevrolet	Corvette	Collector's Edition
1978,1986	Chevrolet	Corvette	Indianapolis 500 Pace Car
1978	Chevrolet	Corvette	Silver Anniversary Edition
1975-1976	Chevrolet	Corvette	Stingray
1958	Chevrolet	Del Ray	Base
1959-1985	Chevrolet	Impala	Base
1975-1977	Chevrolet	Impala	Custom
1976	Chevrolet	Impala	Custom Landau
1981-1982	Chevrolet	Impala	Estate
1977-1979	Chevrolet	Impala	Landau
1976	Chevrolet	Impala	S
1975-1976,1979-1980	Chevrolet	Impala	Sport
1964-1967	Chevrolet	Impala	SS
1969-1972	Chevrolet	Kingswood	Base
1969-1972	Chevrolet	Kingswood	Estate
1973-1975	Chevrolet	Laguna	Base
1973	Chevrolet	Laguna	Estate
1975-1976	Chevrolet	Laguna	S3
1964-1967,1973-1981	Chevrolet	Malibu	Base
1974-1983	Chevrolet	Malibu	Classic
1975-1976,1978-1980	Chevrolet	Malibu	Classic Estate
1976-1981	Chevrolet	Malibu	Classic Landau
1977,1979-1980	Chevrolet	Malibu	Classic Sport
1973-1974,1979-1980	Chevrolet	Malibu	Estate
1976,1979	Chevrolet	Malibu	Landau
1979	Chevrolet	Malibu	Police
1977,1979-1980	Chevrolet	Malibu	Sport
1970-1974,1979,1981-1988	Chevrolet	Monte Carlo	Base
1983	Chevrolet	Monte Carlo	CL
1973-1974,1976,1978-1981	Chevrolet	Monte Carlo	Landau
1986-1988	Chevrolet	Monte Carlo	LS
1973,1975-1977	Chevrolet	Monte Carlo	S
1978,1980	Chevrolet	Monte Carlo	Sport
1983-1988	Chevrolet	Monte Carlo	SS
1975-1979	Chevrolet	Monza	2+2
1978-1979	Chevrolet	Monza	2+2 Sport
1976-1979	Chevrolet	Monza	2+2 Spyder
1976,1978-1979	Chevrolet	Monza	Base
1977	Chevrolet	Monza	Mirage
1975,1978-1979	Chevrolet	Monza	S
1978	Chevrolet	Monza	Sport
1977	Chevrolet	Monza	Towne Coupe
1977	Chevrolet	Monza	Towne Coupe Cabriolet
1977	Chevrolet	Monza	Towne Coupe Sport
1969-1979	Chevrolet	Nova	Base
1976-1977	Chevrolet	Nova	Concours
1973-1975,1978-1979	Chevrolet	Nova	Custom
1975	Chevrolet	Nova	LN
1975-1978	Chevrolet	Nova	Police
1977-1979	Chevrolet	Nova	Rally
1976	Chevrolet	Nova	SS
1955-1957	Chevrolet	One-Fifty Series	Base
1969-1972	Chevrolet	Townsman	Base
1955-1957	Chevrolet	Two-Ten Series	Base
1955-1957	Chevrolet	Two-Ten Series	Del Ray
1959	Fiat	1100	Base
1972-1973	Oldsmobile	98	Base
1973	Oldsmobile	98	Regency
1975,1977,1991-1992	Oldsmobile	Custom Cruiser	Base
1975	Oldsmobile	Custom Cruiser	Panel
1972-1973,1980	Oldsmobile	Cutlass	Base
1980	Oldsmobile	Cutlass	Brougham
1972	Oldsmobile	Cutlass	Cruiser
1980	Oldsmobile	Cutlass	LS
1972-1973	Oldsmobile	Cutlass	S
1978-1979	Oldsmobile	Cutlass	Vista Cruiser
1979	Oldsmobile	Cutlass	Vista Cruiser Brougham
1978-1980	Oldsmobile	Cutlass Calais	Base
1980,1982	Oldsmobile	Cutlass Cruiser	Base
1980	Oldsmobile	Cutlass Cruiser	Brougham
1978	Oldsmobile	Cutlass Salon	442
1978-1980	Oldsmobile	Cutlass Salon	Base
1978-1980	Oldsmobile	Cutlass Salon	Brougham
1972-1973,1978-1980	Oldsmobile	Cutlass Supreme	Base
1978-1980	Oldsmobile	Cutlass Supreme	Brougham
1972-1973,1975,1977	Oldsmobile	Delta 88	Base
1972-1973,1975,1977	Oldsmobile	Delta 88	Royale
1972	Oldsmobile	F85	Base
1973,1975-1979	Oldsmobile	Omega	Base
1976-1979	Oldsmobile	Omega	Brougham
1978-1979	Oldsmobile	Omega	Brougham LS
1977	Oldsmobile	Omega	Deluxe
1976-1977	Oldsmobile	Omega	F85
1975	Oldsmobile	Omega	Salon
1976-1978	Oldsmobile	Omega	SX
1977-1979	Oldsmobile	Starfire	Base
1977-1979	Oldsmobile	Starfire	Firenza
1977-1979	Oldsmobile	Starfire	GT
1977-1979	Oldsmobile	Starfire	SX
1972-1973	Oldsmobile	Vista Cruiser	Base
1974-1975,1983-1986	Pontiac	Bonneville	Base
1983-1986	Pontiac	Bonneville	Brougham
1984-1986	Pontiac	Bonneville	LE
1967,1974-1975	Pontiac	Catalina	Base
1967,1974-1975	Pontiac	Catalina	Safari
1967	Pontiac	Catalina	Ventura
1972-1974,1977-1980,1982-1992	Pontiac	Firebird	Base
1972-1974,1977-1980	Pontiac	Firebird	Esprit
1972-1974,1977-1981,1989-1992	Pontiac	Firebird	Formula
1982-1986	Pontiac	Firebird	S/E
1972-1974,1980-1992	Pontiac	Firebird	Trans Am
1989-1992	Pontiac	Firebird	Trans Am GTA
1974-1975,1978-1980	Pontiac	Grand Am	Base
1975,1977-1980	Pontiac	Grand LeMans	Base
1975,1978-1980	Pontiac	Grand LeMans	Safari
1978-1980,1983-1987	Pontiac	Grand Prix	Base
1983-1987	Pontiac	Grand Prix	Brougham
1984-1987	Pontiac	Grand Prix	LE
1975,1978-1980,1983	Pontiac	Grand Prix	LJ