FMBP 471004 Engine Valve Lock

Engine Valve Lock for Performance Builds

This Melling engine valve lock is a steel replacement component for valve train service and performance engine assembly. Part number 471004 is made in the USA and specified for applications that use a 0.354-inch valve stem diameter with a two-groove lock design.

Compatible with a wide range of Dodge, Chrysler, and Plymouth V8 applications, this valve lock is used in intake valve service across classic and performance-oriented engines. The 471004 part number is a direct reference for builders working on older Mopar platforms that require the correct stem diameter and groove count.

• Steel construction for valve train service
• 0.354-inch valve stem diameter specification
• Two-groove lock design
• Performance grade type
• Made in the USA

Application Details

Fits 1989-2003 Dodge Dakota, N/A; 1998-2003 Dodge Durango, N/A; 1994-2003 Dodge Ram 1500, N/A; 1998-2003 Dodge Ram 1500 Van, N/A; 1995-1996 Dodge Ram 1500 Van, N/A; 1997-2003 Dodge Ram 2500 Van, N/A; 1997-2003 Dodge Ram 3500 Van, N/A; 1994-2002 Dodge Ram 2500, N/A; 1994-2002 Dodge Ram 3500, N/A; 1999-2001 Dodge Ramcharger, N/A; 1996 Dodge Ramcharger, N/A; 1974-1993 Dodge Ramcharger, N/A; 1995-1998 Dodge B1500, N/A; 1995-1998 Dodge B2500, N/A; 1995-1998 Dodge B3500, N/A; 1981-1994 Dodge B150, N/A; 1981-1994 Dodge B250, N/A; 1981-1994 Dodge B350, N/A; 1977-1993 Dodge D150, N/A; 1981-1993 Dodge D250, N/A; 1981-1993 Dodge D350, N/A; 1977-1993 Dodge W150, N/A; 1981-1993 Dodge W250, N/A; 1981-1993 Dodge W350, N/A; 1991 Dodge DM350, N/A; 1983-1989 Chrysler Fifth Avenue, N/A; 1984-1989 Dodge D100, N/A; 1975-1980 Dodge D100, N/A; 1977-1989 Dodge Diplomat, N/A; 1984-1989 Dodge W100, N/A; 1975-1977 Dodge W100, N/A; 1978-1989 Plymouth Caravelle, N/A; 1980-1989 Plymouth Gran Fury, N/A; 1972-1977 Plymouth Gran Fury, N/A; 1975-1983 Chrysler Cordoba, N/A; 1981-1983 Chrysler Imperial, N/A; 1959-1975 Chrysler Imperial, N/A; 1980-1983 Dodge Mirada, N/A; 1983 Plymouth PB150, N/A; 1981 Plymouth PB150, N/A; 1981-1983 Plymouth PB250, N/A; 1981-1983 Plymouth PB350, N/A; 1966-1982 Chrysler New Yorker, N/A; 1963 Chrysler New Yorker, N/A; 1977-1981 Chrysler LeBaron, N/A; 1961-1981 Chrysler Newport, N/A; 1959-1981 Chrysler Town & Country, N/A; 1979-1981 Dodge St. Regis, N/A; 1974-1981 Plymouth Trailduster, N/A; 1976-1980 Chrysler Valiant, N/A; 1976-1980 Dodge Aspen, N/A; 1975-1980 Dodge B100, N/A; 1975-1980 Dodge B200, N/A; 1975-1980 Dodge B300, N/A; 1973-1980 Dodge CB300, N/A; 1979-1980 Dodge D100 Panel, N/A; 1976-1977 Dodge D100 Panel, N/A; 1975-1980 Dodge D200, N/A; 1975-1980 Dodge D300, N/A; 1978-1980 Dodge RD200, N/A; 1975-1980 Dodge W200, N/A; 1975-1980 Dodge W300, N/A; 1975-1980 Plymouth PB100, N/A; 1975-1980 Plymouth PB200, N/A; 1975-1980 Plymouth PB300, N/A; 1976-1980 Plymouth Volare, N/A; 1978-1979 Dodge Magnum, N/A; 1966-1978 Dodge Charger, N/A; 1965-1978 Dodge Monaco, N/A; 1960-1978 Plymouth Fury, N/A; 1975-1977 Dodge Royal Monaco, N/A; 1965-1976 Dodge Coronet, N/A; 1959 Dodge Coronet, N/A; 1965-1976 Dodge Dart, N/A; 1960-1962 Dodge Dart, N/A; 1970-1976 Plymouth Duster, N/A; 1975-1976 Plymouth Scamp, N/A; 1971-1976 Plymouth Valiant, N/A; 1965-1969 Plymouth Valiant, N/A; 1968-1975 Plymouth Road Runner, N/A; 1971-1974 Dodge B100 Van, N/A; 1971-1974 Dodge B200 Van, N/A; 1971-1974 Dodge B300 Van, N/A; 1970-1974 Dodge Challenger, N/A; 1968-1974 Dodge D100 Pickup, N/A; 1968-1974 Dodge D200 Pickup, N/A; 1968-1974 Dodge D300 Pickup, N/A; 1974 Dodge M300, N/A; 1974 Dodge MB300, N/A; 1968-1974 Dodge W100 Pickup, N/A; 1968-1974 Dodge W200 Pickup, N/A; 1968-1974 Dodge W300 Pickup, N/A; 1967-1974 Plymouth Barracuda, N/A; 1964 Plymouth Barracuda, N/A; 1970-1974 Plymouth Cuda, N/A; 1968-1974 Plymouth Fury I, N/A; 1968-1974 Plymouth Fury II, N/A; 1968-1974 Plymouth Fury III, N/A; 1974 Plymouth PB100 Van, N/A; 1974 Plymouth PB200 Van, N/A; 1974 Plymouth PB300 Van, N/A; 1965-1974 Plymouth Satellite, N/A; 1960-1973 Dodge Polara, N/A; 1959-1971 Chrysler 300, N/A; 1967-1971 Plymouth GTX, N/A; 1960-1970 Plymouth Belvedere, N/A; 1970 Plymouth Superbird, N/A; 1967 Dodge D100 Series, N/A; 1967 Dodge D200 Series, N/A; 1967 Dodge D300 Series, N/A; 1967 Dodge W100 Series, N/A; 1967 Dodge W200 Series, N/A; 1967 Dodge W300 Series, N/A; 1967 Plymouth VIP, N/A; 1963-1964 Dodge 330, N/A; 1963-1964 Dodge 440, N/A; 1963-1964 Dodge 880, N/A; 1960-1964 Plymouth Savoy, N/A; 1960-1963 Plymouth Fleet Special, N/A; 1959-1961 Chrysler Windsor, N/A; 1959-1961 Dodge Custom, N/A; 1960-1961 Dodge Phoenix, N/A; 1961 Dodge Pioneer, N/A; 1961 Dodge Seneca, N/A; 1960-1961 Plymouth Custom, N/A; 1960-1961 Plymouth Sport Wagon, N/A; 1960-1961 Plymouth Suburban, N/A; 1959-1960 Chrysler Saratoga, N/A; 1960 Dodge Matador, N/A; 1959 Dodge Lancer, N/A; 1959 Dodge Royal, N/A; 1959 Dodge Sierra, N/A

Common Service Uses

• Replacing worn or damaged valve locks during engine rebuilds
• Securing valves in performance cylinder head assemblies
• Restoring proper valve retention after valve service
• Supporting intake valve installation on listed Mopar applications

Installation Notes

Use the correct valve stem diameter and groove count before assembly. Melling states that new valve locks should be used for both reclaimed and new engine valves, and that reused locks should be replaced rather than reinstalled. Verify the stem size and groove configuration against the cylinder head and valve specifications for the engine being serviced.

Quality Assurance

Melling manufactures this valve lock in the USA using quality materials and engineers it to meet or exceed OEM requirements for each application. Part number 471004 is a performance-grade component for engine builders who need a precise valve train fit.