US Motor Works 21043 Engine Cooling Fan Clutch

Brand US Motor Works 21043
Fits Chevrolet, GMC, Oldsmobile, Plymouth, Pontiac, Dodge, Chrysler, and Buick · 187 vehicles

Fan mounting hardware included. Ready for a straightforward installation.

Cooling fan clutch. Helps regulate fan engagement for consistent cooling performance.

Cross-references Hayden 1707 for the same application. See all 1.

$71.11Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.

Engine Cooling Fan Clutch for Classic GM and Mopar Applications

US Motor Works 21043 is a non-thermal engine cooling fan clutch for a wide range of classic Chevrolet, GMC, Oldsmobile, Pontiac, Buick, Chrysler, Dodge, and Imperial applications. It is built for direct replacement use where consistent mechanical fan engagement is required, and it includes fan mounting hardware.

Key Features

  • Non-thermal engine cooling fan clutch design
  • Includes fan mounting hardware
  • Direct replacement for select classic car and truck cooling systems
  • Cross-references Hayden 1707 for the same application
  • US Motor Works Part Number: 21043

Detailed Description

This US Motor Works 21043 fan clutch is used in engine cooling systems that rely on a belt-driven fan to move air through the radiator. It serves a broad range of older GM and Mopar vehicles, including Chevrolet Monte Carlo, C10, K10, G20, GMC Jimmy, Oldsmobile Cutlass, Pontiac Firebird, Chrysler Newport, Dodge Dart, and Dodge Challenger applications. For buyers searching for a non-thermal engine cooling fan clutch for classic Chevrolet Monte Carlo or GMC Jimmy fitment, this part number provides a direct replacement option.

Part number 21043 is also a useful reference when matching cooling fan clutch service parts for vintage Chevrolet C10 and K10 trucks, as well as Pontiac Grand Prix and Oldsmobile Delta 88 models. The non-thermal design supports applications that use a fixed engagement style rather than a temperature-controlled clutch.

Vehicle Fitment

  • Fits 1986-1987 Chevrolet Monte Carlo, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1976-1977 Chevrolet Monte Carlo, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet C10, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet C10 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet C20, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet C20 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1975-1979 Chevrolet G30, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet K10, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet K10 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet K20, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet K20 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet K30, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Chevrolet K5 Blazer, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC C1500, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC C1500 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 GMC Jimmy, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC K1500, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC K1500 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC K2500, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC K2500 Suburban, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 GMC K3500, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 Oldsmobile Cutlass, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1977 Oldsmobile Cutlass, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1977-1979 Oldsmobile Delta 88, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1977-1979 Oldsmobile Omega, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1975-1979 Oldsmobile Starfire, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1977-1979 Pontiac Catalina, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1977-1979 Pontiac Firebird, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1979 Pontiac Grand Am, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1976-1979 Pontiac Grand LeMans, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1978-1979 Pontiac Grand Prix, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1976-1979 Pontiac LeMans, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1977-1979 Pontiac Phoenix, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1975-1978 Chevrolet G20, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1975-1978 GMC G25, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1975-1978 GMC G35, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1964-1974 Dodge Dart, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1961-1962 Dodge Dart, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1974 GMC G25/G2500 Van, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1974 GMC G35/G3500 Van, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1965-1971 Chrysler Newport, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1966-1971 Chrysler Town & Country, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1970-1971 Dodge Challenger, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1967 Buick LeSabre, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1964-1967 Buick Skylark, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1959-1966 Chrysler 300, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1959-1965 Chrysler Imperial, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1959-1965 Chrysler New Yorker, N/A. Non-thermal engine cooling fan clutch fitment.
  • Fits 1965 Dodge Monaco, N/A. Non-thermal engine cooling fan clutch fitment.

Common Uses

  • Replacing a worn fan clutch that causes reduced airflow through the radiator
  • Restoring proper mechanical fan operation on classic Chevrolet Monte Carlo and C10 trucks
  • Addressing overheating concerns in older GMC, Pontiac, Oldsmobile, and Chrysler applications
  • Correcting fan engagement issues on belt-driven cooling systems

Installation Notes and Tips

Verify the vehicle year, make, model, and cooling fan clutch style before ordering. Confirm that the application calls for a non-thermal engine cooling fan clutch and compare the existing unit to the replacement part number 21043. Check fan and pulley alignment during installation, and inspect related cooling system components for wear before reassembly.

Quality Assurance

US Motor Works 21043 is cataloged as a direct replacement cooling fan clutch for the listed applications. The part cross-references Hayden 1707 for the same application.

This part fits 187 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
1987ChevroletMonte CarloN/ANon-thermal engine cooling fan clutch fitment.
1986ChevroletMonte CarloN/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletC10N/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletC10 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletC20N/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletC20 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletG30N/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletK10N/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletK10 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletK20N/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletK20 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletK30N/ANon-thermal engine cooling fan clutch fitment.
1979ChevroletK5 BlazerN/ANon-thermal engine cooling fan clutch fitment.
1979GMCC1500N/ANon-thermal engine cooling fan clutch fitment.
1979GMCC1500 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979GMCJimmyN/ANon-thermal engine cooling fan clutch fitment.
1979GMCK1500N/ANon-thermal engine cooling fan clutch fitment.
1979GMCK1500 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979GMCK2500N/ANon-thermal engine cooling fan clutch fitment.
1979GMCK2500 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1979GMCK3500N/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileCutlassN/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileDelta 88N/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileOmegaN/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileStarfireSXN/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileStarfireGTN/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileStarfireFirenzaN/ANon-thermal engine cooling fan clutch fitment.
1979OldsmobileStarfireBaseN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacCatalinaN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacFirebirdN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacGrand AmN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacGrand LeMansN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacGrand PrixN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacLeMansN/ANon-thermal engine cooling fan clutch fitment.
1979PontiacPhoenixN/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletC10N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletC10 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletC20N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletC20 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletG20N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletG30N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletK10N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletK10 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletK20N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletK20 SuburbanN/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletK30N/ANon-thermal engine cooling fan clutch fitment.
1978ChevroletK5 BlazerN/ANon-thermal engine cooling fan clutch fitment.
1978GMCG25N/ANon-thermal engine cooling fan clutch fitment.
1978GMCG35N/ANon-thermal engine cooling fan clutch fitment.
1978GMCJimmyN/ANon-thermal engine cooling fan clutch fitment.
1978OldsmobileDelta 88N/ANon-thermal engine cooling fan clutch fitment.
1978OldsmobileOmegaN/ANon-thermal engine cooling fan clutch fitment.
1978OldsmobileStarfireSXN/ANon-thermal engine cooling fan clutch fitment.
1978OldsmobileStarfireGTN/ANon-thermal engine cooling fan clutch fitment.
1978OldsmobileStarfireFirenzaN/ANon-thermal engine cooling fan clutch fitment.
1978OldsmobileStarfireBaseN/ANon-thermal engine cooling fan clutch fitment.
1978PontiacCatalinaN/ANon-thermal engine cooling fan clutch fitment.
1978PontiacFirebirdN/ANon-thermal engine cooling fan clutch fitment.
1978PontiacGrand LeMansN/ANon-thermal engine cooling fan clutch fitment.
1978PontiacGrand PrixN/ANon-thermal engine cooling fan clutch fitment.
1978PontiacLeMansN/ANon-thermal engine cooling fan clutch fitment.
1978PontiacPhoenixN/ANon-thermal engine cooling fan clutch fitment.
1977ChevroletG20N/ANon-thermal engine cooling fan clutch fitment.
1977ChevroletG30N/ANon-thermal engine cooling fan clutch fitment.
1977ChevroletMonte CarloN/ANon-thermal engine cooling fan clutch fitment.
1977GMCG25N/ANon-thermal engine cooling fan clutch fitment.
1977GMCG35N/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileCutlassN/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileDelta 88N/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileOmegaN/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileStarfireSXN/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileStarfireGTN/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileStarfireFirenzaN/ANon-thermal engine cooling fan clutch fitment.
1977OldsmobileStarfireBaseN/ANon-thermal engine cooling fan clutch fitment.
1977PontiacCatalinaN/ANon-thermal engine cooling fan clutch fitment.
1977PontiacFirebirdN/ANon-thermal engine cooling fan clutch fitment.
1977PontiacGrand LeMansN/ANon-thermal engine cooling fan clutch fitment.
1977PontiacLeMansN/ANon-thermal engine cooling fan clutch fitment.
1977PontiacPhoenixN/ANon-thermal engine cooling fan clutch fitment.
1976ChevroletG20N/ANon-thermal engine cooling fan clutch fitment.
1976ChevroletG30N/ANon-thermal engine cooling fan clutch fitment.
1976ChevroletMonte CarloN/ANon-thermal engine cooling fan clutch fitment.
1976GMCG25N/ANon-thermal engine cooling fan clutch fitment.
1976GMCG35N/ANon-thermal engine cooling fan clutch fitment.
1976OldsmobileStarfireSXN/ANon-thermal engine cooling fan clutch fitment.
1976OldsmobileStarfireGTN/ANon-thermal engine cooling fan clutch fitment.
1976OldsmobileStarfireBaseN/ANon-thermal engine cooling fan clutch fitment.
1976PontiacGrand LeMansN/ANon-thermal engine cooling fan clutch fitment.
1976PontiacLeMansN/ANon-thermal engine cooling fan clutch fitment.
1975ChevroletG20N/ANon-thermal engine cooling fan clutch fitment.
1975ChevroletG30N/ANon-thermal engine cooling fan clutch fitment.
1975GMCG25N/ANon-thermal engine cooling fan clutch fitment.
1975GMCG35N/ANon-thermal engine cooling fan clutch fitment.
1975OldsmobileStarfireSN/ANon-thermal engine cooling fan clutch fitment.
1975OldsmobileStarfireBaseN/ANon-thermal engine cooling fan clutch fitment.
1974DodgeDartSwingerN/ANon-thermal engine cooling fan clutch fitment.
1974DodgeDartSportN/ANon-thermal engine cooling fan clutch fitment.
1974DodgeDartSpecialN/ANon-thermal engine cooling fan clutch fitment.
1974DodgeDartSpecial EditionN/ANon-thermal engine cooling fan clutch fitment.
1974DodgeDartCustomN/ANon-thermal engine cooling fan clutch fitment.
1974DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1974GMCG25/G2500 VanN/ANon-thermal engine cooling fan clutch fitment.
1974GMCG35/G3500 VanN/ANon-thermal engine cooling fan clutch fitment.
1973DodgeDartSwingerN/ANon-thermal engine cooling fan clutch fitment.
1973DodgeDartSportN/ANon-thermal engine cooling fan clutch fitment.
1973DodgeDartSpecialN/ANon-thermal engine cooling fan clutch fitment.
1973DodgeDartCustomN/ANon-thermal engine cooling fan clutch fitment.
1973DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1972DodgeDartSwingerN/ANon-thermal engine cooling fan clutch fitment.
1972DodgeDartSpecialN/ANon-thermal engine cooling fan clutch fitment.
1972DodgeDartDemonN/ANon-thermal engine cooling fan clutch fitment.
1972DodgeDartCustomN/ANon-thermal engine cooling fan clutch fitment.
1972DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1971ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1971ChryslerTown & CountryN/ANon-thermal engine cooling fan clutch fitment.
1971DodgeChallengerN/ANon-thermal engine cooling fan clutch fitment.
1971DodgeDartSwingerN/ANon-thermal engine cooling fan clutch fitment.
1971DodgeDartSpecialN/ANon-thermal engine cooling fan clutch fitment.
1971DodgeDartDemonN/ANon-thermal engine cooling fan clutch fitment.
1971DodgeDartCustomN/ANon-thermal engine cooling fan clutch fitment.
1971DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1970ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1970ChryslerTown & CountryN/ANon-thermal engine cooling fan clutch fitment.
1970DodgeChallengerN/ANon-thermal engine cooling fan clutch fitment.
1970DodgeDartSwingerN/ANon-thermal engine cooling fan clutch fitment.
1970DodgeDartCustomN/ANon-thermal engine cooling fan clutch fitment.
1970DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1969ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1969ChryslerTown & CountryN/ANon-thermal engine cooling fan clutch fitment.
1969DodgeDartSwingerN/ANon-thermal engine cooling fan clutch fitment.
1969DodgeDartGTSN/ANon-thermal engine cooling fan clutch fitment.
1969DodgeDartGTN/ANon-thermal engine cooling fan clutch fitment.
1969DodgeDartCustomN/ANon-thermal engine cooling fan clutch fitment.
1969DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1968ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1968ChryslerTown & CountryN/ANon-thermal engine cooling fan clutch fitment.
1968DodgeDartGTSN/ANon-thermal engine cooling fan clutch fitment.
1968DodgeDartGTN/ANon-thermal engine cooling fan clutch fitment.
1968DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1968DodgeDart270N/ANon-thermal engine cooling fan clutch fitment.
1967BuickLeSabreN/ANon-thermal engine cooling fan clutch fitment.
1967BuickSkylarkN/ANon-thermal engine cooling fan clutch fitment.
1967ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1967ChryslerTown & CountryN/ANon-thermal engine cooling fan clutch fitment.
1967DodgeDartGTN/ANon-thermal engine cooling fan clutch fitment.
1967DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1967DodgeDart270N/ANon-thermal engine cooling fan clutch fitment.
1966BuickSkylarkN/ANon-thermal engine cooling fan clutch fitment.
1966Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1966ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1966ChryslerTown & CountryN/ANon-thermal engine cooling fan clutch fitment.
1966DodgeDartGTN/ANon-thermal engine cooling fan clutch fitment.
1966DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1966DodgeDart270N/ANon-thermal engine cooling fan clutch fitment.
1965BuickSkylarkN/ANon-thermal engine cooling fan clutch fitment.
1965Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1965ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1965ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
1965ChryslerNewportN/ANon-thermal engine cooling fan clutch fitment.
1965DodgeDartGTN/ANon-thermal engine cooling fan clutch fitment.
1965DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1965DodgeDart270N/ANon-thermal engine cooling fan clutch fitment.
1965DodgeMonacoN/ANon-thermal engine cooling fan clutch fitment.
1964BuickSkylarkN/ANon-thermal engine cooling fan clutch fitment.
1964Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1964ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1964ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
1964DodgeDartGTSN/ANon-thermal engine cooling fan clutch fitment.
1964DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1964DodgeDart270N/ANon-thermal engine cooling fan clutch fitment.
1963Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1963ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1963ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
1962Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1962ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1962ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
1962DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1961Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1961ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1961ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
1961DodgeDartBaseN/ANon-thermal engine cooling fan clutch fitment.
1960Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1960ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1960ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
1959Chrysler300N/ANon-thermal engine cooling fan clutch fitment.
1959ChryslerImperialN/ANon-thermal engine cooling fan clutch fitment.
1959ChryslerNew YorkerN/ANon-thermal engine cooling fan clutch fitment.
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Hayden — 1707