FMBP 476104 Engine Valve Lock

Engine Valve Lock for Performance Builds

This Melling engine valve lock is a steel replacement component for valve train service and rebuild work. Part number 476104 is made in the USA and is specified for applications that require a 0.340-inch valve stem diameter.

Use this valve lock when replacing worn or reclaimed engine valves, or when assembling new valves during an engine rebuild. Melling 476104 is engineered to meet or exceed OEM requirements for the listed applications and is intended for performance-grade service across a wide range of Chevrolet, GMC, and Ford engines.

Key Features

• Steel construction for valve train service
• 0.340-inch valve stem diameter specification
• Single-groove lock design
• Performance grade type
• Made in the USA
• Fits a broad range of Chevrolet, GMC, Ford, Buick, Pontiac, Oldsmobile, Cadillac, Mercury, and Lincoln applications

Application Details

Fits 1992-2003 GMC Jimmy, N/A; 1995-2002 Chevrolet Blazer, N/A; 1996-2002 Chevrolet Express 1500, N/A; 1996-2002 Chevrolet Express 2500, N/A; 1996-2002 Chevrolet Express 3500, N/A; 2002 Chevrolet P30, N/A; 1975-1999 Chevrolet P30, N/A; 1988-2002 Chevrolet S10, N/A; 1999-2002 Chevrolet Silverado 1500, N/A; 1996-2002 GMC Savana 1500, N/A; 1996-2002 GMC Savana 2500, N/A; 1996-2002 GMC Savana 3500, N/A; 1999-2002 GMC Sierra 1500, N/A; 1991-2002 GMC Sonoma, N/A; 1985-2001 Chevrolet Astro, N/A; 1985-2001 GMC Safari, N/A; 1988-2000 Chevrolet C2500, N/A; 1983-2000 Chevrolet C35, N/A; 1988-2000 Chevrolet C3500, N/A; 1997-2000 Chevrolet Cargo Van, N/A; 1988-2000 Chevrolet K2500, N/A; 1988-2000 Chevrolet K3500, N/A; 1999-2000 Chevrolet L30, N/A; 2000 Chevrolet Sonora, N/A; 1995-2000 Chevrolet Suburban 1500, N/A; 1995-2000 Chevrolet Tahoe, N/A; 1988-2000 GMC C2500, N/A; 1979-1986 GMC C2500, N/A; 1988-2000 GMC C3500, N/A; 1979-1986 GMC C3500, N/A; 1988-2000 GMC K2500, N/A; 1979-1986 GMC K2500, N/A; 1988-2000 GMC K3500, N/A; 1979-1986 GMC K3500, N/A; 1992-2000 GMC Yukon, N/A; 1988-1999 Chevrolet C1500, N/A; 1992-1999 Chevrolet C1500 Suburban, N/A; 1992-1999 Chevrolet C2500 Suburban, N/A; 1988-1999 Chevrolet K1500, N/A; 1992-1999 Chevrolet K1500 Suburban, N/A; 1992-1999 Chevrolet K2500 Suburban, N/A; 1995-1999 Chevrolet Silverado, N/A; 1988-1999 GMC C1500, N/A; 1979-1986 GMC C1500, N/A; 1992-1999 GMC C1500 Suburban, N/A; 1979-1986 GMC C1500 Suburban, N/A; 1992-1999 GMC C2500 Suburban, N/A; 1979-1986 GMC C2500 Suburban, N/A; 1988-1999 GMC K1500, N/A; 1979-1986 GMC K1500, N/A; 1992-1999 GMC K1500 Suburban, N/A; 1979-1986 GMC K1500 Suburban, N/A; 1992-1999 GMC K2500 Suburban, N/A; 1979-1986 GMC K2500 Suburban, N/A; 1979-1999 GMC P3500, N/A; 1970-1997 Chevrolet Camaro, N/A; 1970-1996 Chevrolet Caprice, N/A; 1984-1996 Chevrolet Corvette, N/A; 1970-1982 Chevrolet Corvette, N/A; 1975-1996 Chevrolet G30, N/A; 1994-1996 Chevrolet Impala, N/A; 1970-1985 Chevrolet Impala, N/A; 1979-1996 GMC G3500, N/A; 1991-1995 Chevrolet C3500HD, N/A; 1994-1995 Chevrolet G10, N/A; 1975-1995 Chevrolet G20, N/A; 1991-1995 GMC C3500HD, N/A; 1994-1995 GMC G1500, N/A; 1979-1995 GMC G2500, N/A; 1987-1994 Chevrolet Blazer, N/A; 1970-1974 Chevrolet Blazer, N/A; 1991-1994 Chevrolet Commercial Chassis, N/A; 1993-1994 Chevrolet GP3500, N/A; 1988-1994 Chevrolet S10 Blazer, N/A; 1990-1994 Chevrolet Suburban, N/A; 1987 Chevrolet Suburban, N/A; 1984-1994 Ford Bronco, N/A; 1978-1982 Ford Bronco, N/A; 1975-1994 Ford E-150 Econoline, N/A; 1975-1994 Ford E-150 Econoline Club Wagon, N/A; 1975-1994 Ford E-250 Econoline, N/A; 1975-1994 Ford E-350 Econoline, N/A; 1977-1994 Ford E-350 Econoline Club Wagon, N/A; 1977-1994 Ford F-150, N/A; 1977-1994 Ford F-250, N/A; 1977-1994 Ford F-350, N/A; 1975-1993 Chevrolet G10, N/A; 1979-1993 GMC G1500, N/A; 1992-1993 GMC Typhoon, N/A; 1990-1992 Cadillac Brougham, N/A; 1989-1991 Chevrolet R1500 Suburban, N/A; 1989-1991 Chevrolet R2500 Suburban, N/A; 1989-1991 Chevrolet R3500, N/A; 1989-1991 Chevrolet V1500 Suburban, N/A; 1989-1991 Chevrolet V2500 Suburban, N/A; 1989-1991 Chevrolet V3500, N/A; 1975-1991 Ford E-250 Econoline Club Wagon, N/A; 1987-1991 Ford LTD Crown Victoria, N/A; 1971-1991 GMC Jimmy, N/A; 1987-1991 GMC R1500 Suburban, N/A; 1987-1991 GMC R2500 Suburban, N/A; 1987-1991 GMC R3500, N/A; 1988-1991 GMC S15 Jimmy, N/A; 1991 GMC Syclone, N/A; 1987-1991 GMC V1500 Suburban, N/A; 1987-1991 GMC V2500 Suburban, N/A; 1987-1991 GMC V3500, N/A; 1990 Chevrolet C60, N/A; 1985 Chevrolet C60, N/A; 1980-1990 Chevrolet C70, N/A; 1990 GMC C6000, N/A; 1985 GMC C6000, N/A; 1980-1990 GMC C7000, N/A; 1988-1990 GMC S15, N/A; 1975-1989 Chevrolet P20, N/A; 1989 Chevrolet R2500, N/A; 1979-1989 GMC P2500, N/A; 1987-1989 GMC R2500, N/A; 1988 Chevrolet Monte Carlo, N/A; 1987-1988 Chevrolet R10 Suburban, N/A; 1987-1988 Chevrolet R20, N/A; 1987-1988 Chevrolet R20 Suburban, N/A; 1987-1988 Chevrolet R30, N/A; 1987-1988 Chevrolet V10 Suburban, N/A; 1987-1988 Chevrolet V20 Suburban, N/A; 1987-1988 Chevrolet V30, N/A; 1971-1988 Oldsmobile Custom Cruiser, N/A; 1971-1988 Oldsmobile Cutlass Supreme, N/A; 1977-1987 Buick Century, N/A; 1980-1987 Buick Electra, N/A; 1977-1987 Buick LeSabre, N/A; 1982-1987 Buick Regal, N/A; 1979-1987 Buick Riviera, N/A; 1975-1987 Chevrolet C20, N/A; 1982-1987 Chevrolet El Camino, N/A; 1970-1979 Chevrolet El Camino, N/A; 1981-1987 Chevrolet Monte Carlo, N/A; 1970-1977 Chevrolet Monte Carlo, N/A; 1987 Chevrolet R10, N/A; 1987 Chevrolet V10, N/A; 1987 Chevrolet V20, N/A; 1982-1987 GMC Caballero, N/A; 1978-1979 GMC Caballero, N/A; 1987 GMC R1500, N/A; 1987 GMC V1500, N/A; 1987 GMC V2500, N/A; 1985-1987 Oldsmobile Cutlass Salon, N/A; 1975-1980 Oldsmobile Cutlass Salon, N/A; 1982-1987 Pontiac Firebird, N/A; 1983-1987 Pontiac Grand Prix, N/A; 1975-1986 Chevrolet C10, N/A; 1970-1986 Chevrolet C10 Suburban, N/A; 1970-1986 Chevrolet C20 Suburban, N/A; 1975-1986 Chevrolet C30, N/A; 1986 Chevrolet C50, N/A; 1975-1986 Chevrolet K10, N/A; 1970-1986 Chevrolet K10 Suburban, N/A; 1975-1986 Chevrolet K20, N/A; 1970-1986 Chevrolet K20 Suburban, N/A; 1977-1986 Chevrolet K30, N/A; 1975-1986 Chevrolet K5 Blazer, N/A; 1983-1986 Pontiac Bonneville, N/A; 1982-1986 Pontiac Parisienne, N/A; 1980-1985 Chevrolet B60, N/A; 1982-1985 Chevrolet C15, N/A; 1980-1985 GMC B6000, N/A; 1971-1985 Oldsmobile Delta 88, N/A; 1971-1985 Oldsmobile Toronado, N/A; 1971-1984 Ford LTD, N/A; 1971-1984 Oldsmobile 98, N/A; 1978-1984 Oldsmobile Cutlass Calais, N/A; 1978-1983 Chevrolet Malibu, N/A; 1975-1983 Ford E-100 Econoline, N/A; 1975-1983 Ford E-100 Econoline Club Wagon, N/A; 1980-1983 Oldsmobile Cutlass Cruiser, N/A; 1982-1983 Pontiac Grand LeMans, N/A; 1977-1981 Buick Regal, N/A; 1980-1981 Chevrolet El Camino, N/A; 1980-1981 GMC Caballero, N/A; 1978-1981 Mercury Grand Marquis, N/A; 1978-1981 Mercury Marquis, N/A; 1971-1984 Mercury Marquis, N/A; 1971-1981 Oldsmobile Cutlass, N/A; 1979-1981 Pontiac Firebird, N/A; 1971-1977 Pontiac Firebird, N/A; 1979-1981 Pontiac Grand LeMans, N/A; 1975-1977 Pontiac Grand LeMans, N/A; 1979-1981 Pontiac LeMans, N/A; 1971-1977 Pontiac LeMans, N/A; 1977-1980 Buick Skyhawk, N/A; 1979-1980 Cadillac Eldorado, N/A; 1976-1980 Cadillac Seville, N/A; 1979-1980 Chevrolet Monte Carlo, N/A; 1980 Lincoln Continental, N/A; 1980 Lincoln Mark VI, N/A; 1971-1980 Pontiac Bonneville, N/A; 1971-1980 Pontiac Catalina, N/A; 1978-1980 Pontiac Grand Am, N/A; 1973-1975 Pontiac Grand Am, N/A; 1971-1980 Pontiac Grand Prix, N/A; 1977-1979 Buick Skylark, N/A; 1970-1979 Chevrolet Nova, N/A; 1977-1979 Ford F-100, N/A; 1977-1979 Ford LTD II, N/A; 1971-1979 Ford Ranchero, N/A; 1977-1979 Ford Thunderbird, N/A; 1979 GMC P1500, N/A; 1971-1979 Mercury Cougar, N/A; 1977-1978 Chevrolet P10, N/A; 1975 Chevrolet P10, N/A; 1975-1978 GMC C15, N/A; 1975-1978 GMC C15 Suburban, N/A; 1975-1978 GMC C25, N/A; 1975-1978 GMC C25 Suburban, N/A; 1975-1978 GMC C35, N/A; 1975-1978 GMC G15, N/A; 1975-1978 GMC G25, N/A; 1975-1978 GMC G35, N/A; 1975-1978 GMC K15, N/A; 1975-1978 GMC K15 Suburban, N/A; 1975-1978 GMC K25, N/A; 1975-1978 GMC K25 Suburban, N/A; 1977-1978 GMC K35, N/A; 1975-1978 GMC P25, N/A; 1975-1978 GMC P35, N/A; 1970-1977 Ford Custom 500, N/A; 1975-1977 Ford Granada, N/A; 1971-1977 GMC Sprint, N/A; 1977 Lincoln Versailles, N/A; 1975-1977 Mercury Monarch, N/A; 1975-1977 Oldsmobile Omega, N/A; 1976-1977 Pontiac Grand Safari, N/A; 1971-1974 Pontiac Grand Safari, N/A; 1977 Pontiac Laurentian, N/A; 1971-1974 Pontiac Laurentian, N/A; 1977 Pontiac Ventura, N/A; 1971-1975 Pontiac Ventura, N/A; 1975-1976 Chevrolet Monza, N/A; 1975-1976 Ford Elite, N/A; 1972-1976 Ford Gran Torino, N/A; 1971-1976 Ford Torino, N/A; 1971-1976 Mercury Montego, N/A; 1976 Oldsmobile Cutlass Tiara, N/A; 1970-1975 Chevrolet Bel Air, N/A; 1971-1975 Oldsmobile Vista Cruiser, N/A; 1971-1975 Pontiac Grandville, N/A; 1970-1974 Chevrolet C10 Pickup, N/A; 1970-1974 Chevrolet C20 Pickup, N/A; 1970-1974 Chevrolet C30 Pickup, N/A; 1973-1974 Chevrolet G10 Van, N/A; 1970-1974 Chevrolet G20 Van, N/A; 1973-1974 Chevrolet G30 Van, N/A; 1970-1974 Chevrolet K10 Pickup, N/A; 1970-1974 Chevrolet K20 Pickup, N/A; 1970-1974 Chevrolet K30 Pickup, N/A; 1973-1974 Chevrolet P20 Van, N/A; 1970-1971 Chevrolet P20 Van, N/A; 1970-1974 Chevrolet P30 Van, N/A; 1970-1974 Ford Country Sedan, N/A; 1970-1974 Ford Country Squire, N/A; 1970-1974 Ford Galaxie 500, N/A; 1971-1974 Ford Ranch Wagon, N/A; 1971-1974 GMC C15/C1500 Pickup, N/A; 1971-1974 GMC C15/C1500 Suburban, N/A; 1971-1974 GMC C25/C2500 Pickup, N/A; 1971-1974 GMC C25/C2500 Suburban, N/A; 1971-1974 GMC C35/C3500 Pickup, N/A; 1974 GMC G15/G1500 Van, N/A; 1974 GMC G25/G2500 Van, N/A; 1971-1974 GMC G35/G3500 Van, N/A; 1971-1974 GMC K15/K1500 Pickup, N/A; 1971-1974 GMC K15/K1500 Suburban, N/A; 1971-1974 GMC K25/K2500 Pickup, N/A; 1971-1974 GMC K25/K2500 Suburban, N/A; 1971-1974 GMC K35/K3500 Pickup, N/A; 1973-1974 GMC P35/P3500 Van, N/A; 1971 GMC P35/P3500 Van, N/A; 1971-1974 Mercury Colony Park, N/A; 1971-1974 Mercury Monterey, N/A; 1971-1974 Pontiac Parisienne, N/A; 1970-1973 Chevrolet Chevelle, N/A; 1973 Chevrolet P10 Van, N/A; 1971-1973 Ford Mustang, N/A; 1971-1973 Pontiac GTO, N/A; 1970-1972 Chevrolet Biscayne, N/A; 1970-1972 Chevrolet Brookwood, N/A; 1970-1972 Chevrolet Kingswood, N/A; 1970-1972 Chevrolet Townsman, N/A; 1970-1972 Ford Custom, N/A; 1971-1972 Oldsmobile F85, N/A; 1971 GMC P25/P2500 Van, N/A; 1971 Mercury Cyclone, N/A; 1971 Oldsmobile 442, N/A; 1971 Pontiac Acadian, N/A; 1970 Chevrolet Estate, N/A; 1970 Ford Fairlane, N/A; 1970 Ford Falcon

Installation Notes and Tips

• Replace valve locks during engine assembly instead of reusing old parts.
• Verify the valve stem diameter before installation; this part is specified for 0.340-inch stems.
• Use with both reclaimed and new engine valves where the application calls for this lock style.
• Confirm the engine build and valve groove configuration match the single-groove design.

Quality Assurance

Melling states that this valve lock is manufactured with quality materials and built to meet or exceed OEM requirements for each listed application. Part number 476104 is made in the USA.