Dorman 42742 Windshield Wiper Arm - Front Left
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Dorman

Dorman 42742 Windshield Wiper Arm - Front Left

Brand Dorman 42742
Position Front Left
Attachment Method Spine / Flange Nut
Color Black
Instruction Manual Included No
Length 24.75
Material Steel
Package Contents Wiper Arm
Universal Or Specific Fit Specific
Wiper End Type Pin
Fits Buick, Oldsmobile, Cadillac, Chevrolet, and Pontiac · 111 vehicles

OE-style replacement. Matches the fit and function of the original arm.

Steel construction. Built for durability and reliable performance.

Specific fit. Engineered for a precise, vehicle-matched installation.

Cross-references 43-31, 427422 and 20004890 for the same application. See all 3.

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Dorman 42742 Front Left Wiper Arm

Dorman 42742 is a specific-fit windshield wiper arm for the front left position on select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles. Built from steel with a black finish, it is designed to match the fit and function of the original arm for dependable windshield wiping performance.

  • Specific-fit windshield wiper arm for the front left position
  • Steel construction for strength and durability
  • Black finish for a clean OE-style appearance
  • Attachment method: spine / flange nut
  • Wiper end type: pin
  • Direct replacement for vehicles that use the original arm configuration

Vehicle Fitment

  • Fits 1977-1990 Buick LeSabre, front left
  • Fits 1977-1990 Oldsmobile Custom Cruiser, front left
  • Fits 1987-1989 Cadillac Brougham, front left
  • Fits 1989 Chevrolet Caprice, front left, wo/Nozzle In Arm
  • Fits 1987-1989 Pontiac Safari, front left
  • Fits 1977-1988 Chevrolet Caprice, front left
  • Fits 1977-1986 Cadillac Fleetwood, front left
  • Fits 1983-1986 Pontiac Parisienne, front left
  • Fits 1977-1985 Chevrolet Impala, front left
  • Fits 1977-1985 Oldsmobile Delta 88, front left
  • Fits 1977-1984 Cadillac DeVille, front left
  • Fits 1977-1984 Oldsmobile 98, front left
  • Fits 1982-1983 Buick Regal, front left
  • Fits 1980-1981 Buick Century, front left
  • Fits 1977-1981 Pontiac Bonneville, front left
  • Fits 1977-1981 Pontiac Catalina, front left
  • Fits 1977-1978 Buick Riviera, front left

What This Wiper Arm Helps Address

  • Wiper arm that no longer holds proper tension against the windshield
  • Uneven or incomplete windshield clearing on the driver side
  • Corrosion, bending, or wear on the original front left arm
  • Fitment issues when replacing a damaged OE-style arm
  • Restoration needs for classic Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models

Installation Notes

Verify the vehicle’s front left wiper arm style before ordering, including the spine / flange nut attachment and pin-style wiper end. This part is listed for specific applications only, and the 1989 Chevrolet Caprice fitment applies to models without a nozzle in the arm. No instruction manual is included.

This part cross-references 43-31 and 427422 for the same application.

Quality Assurance

Dorman designs this windshield wiper arm to match original fit and function on the listed vehicles. The steel construction and OE-style configuration support reliable operation on compatible front left applications such as Buick LeSabre, Chevrolet Caprice, and Cadillac DeVille models.

Related reading

This part fits 111 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypePositionNotes
1990BuickLeSabre—RWDFront Left—
1990OldsmobileCustom Cruiser——Front Left—
1989BuickLeSabre—RWDFront Left—
1989CadillacBrougham——Front Left—
1989ChevroletCaprice——Front Leftwo/Nozzle In Arm
1989OldsmobileCustom Cruiser——Front Left—
1989PontiacSafari——Front Left—
1988BuickLeSabre—RWDFront Left—
1988CadillacBrougham——Front Left—
1988ChevroletCaprice——Front Left—
1988OldsmobileCustom Cruiser——Front Left—
1988PontiacSafari——Front Left—
1987BuickLeSabre—RWDFront Left—
1987CadillacBrougham——Front Left—
1987ChevroletCaprice——Front Left—
1987OldsmobileCustom Cruiser——Front Left—
1987PontiacSafari——Front Left—
1986BuickLeSabre—RWDFront Left—
1986CadillacFleetwood—RWDFront Left—
1986ChevroletCaprice——Front Left—
1986OldsmobileCustom Cruiser——Front Left—
1986PontiacParisienne——Front Left—
1985BuickLeSabre——Front Left—
1985CadillacFleetwood—RWDFront Left—
1985ChevroletCaprice——Front Left—
1985ChevroletImpala——Front Left—
1985OldsmobileCustom Cruiser——Front Left—
1985OldsmobileDelta 88——Front Left—
1985PontiacParisienne——Front Left—
1984BuickLeSabre——Front Left—
1984CadillacDeVille——Front Left—
1984CadillacFleetwood——Front Left—
1984ChevroletCaprice——Front Left—
1984ChevroletImpala——Front Left—
1984Oldsmobile98——Front Left—
1984OldsmobileCustom Cruiser——Front Left—
1984OldsmobileDelta 88——Front Left—
1984PontiacParisienne——Front Left—
1983BuickLeSabre——Front Left—
1983BuickRegalEstate Wagon—Front Left—
1983CadillacDeVille——Front Left—
1983CadillacFleetwood——Front Left—
1983ChevroletCaprice——Front Left—
1983ChevroletImpala——Front Left—
1983Oldsmobile98——Front Left—
1983OldsmobileCustom Cruiser——Front Left—
1983OldsmobileDelta 88——Front Left—
1983PontiacParisienne——Front Left—
1982BuickLeSabre——Front Left—
1982BuickRegalEstate Wagon—Front Left—
1982CadillacDeVille——Front Left—
1982CadillacFleetwood——Front Left—
1982ChevroletCaprice——Front Left—
1982ChevroletImpala——Front Left—
1982Oldsmobile98——Front Left—
1982OldsmobileCustom Cruiser——Front Left—
1982OldsmobileDelta 88——Front Left—
1981BuickCentury——Front Left—
1981BuickLeSabre——Front Left—
1981CadillacDeVille——Front Left—
1981CadillacFleetwood——Front Left—
1981ChevroletCaprice——Front Left—
1981ChevroletImpala——Front Left—
1981Oldsmobile98——Front Left—
1981OldsmobileCustom Cruiser——Front Left—
1981OldsmobileDelta 88——Front Left—
1981PontiacBonneville——Front Left—
1981PontiacCatalina——Front Left—
1980BuickCentury——Front Left—
1980BuickLeSabre——Front Left—
1980CadillacDeVille——Front Left—
1980CadillacFleetwood——Front Left—
1980ChevroletCaprice——Front Left—
1980ChevroletImpala——Front Left—
1980Oldsmobile98——Front Left—
1980OldsmobileCustom Cruiser——Front Left—
1980OldsmobileDelta 88——Front Left—
1980PontiacBonneville——Front Left—
1980PontiacCatalina——Front Left—
1979BuickLeSabre——Front Left—
1979CadillacDeVille——Front Left—
1979CadillacFleetwood——Front Left—
1979ChevroletCaprice——Front Left—
1979ChevroletImpala——Front Left—
1979Oldsmobile98——Front Left—
1979OldsmobileCustom Cruiser——Front Left—
1979OldsmobileDelta 88——Front Left—
1979PontiacBonneville——Front Left—
1979PontiacCatalina——Front Left—
1978BuickLeSabre——Front Left—
1978BuickRiviera——Front Left—
1978CadillacDeVille——Front Left—
1978CadillacFleetwood——Front Left—
1978ChevroletCaprice——Front Left—
1978ChevroletImpala——Front Left—
1978Oldsmobile98——Front Left—
1978OldsmobileCustom Cruiser——Front Left—
1978OldsmobileDelta 88——Front Left—
1978PontiacBonneville——Front Left—
1978PontiacCatalina——Front Left—
1977BuickLeSabre——Front Left—
1977BuickRiviera——Front Left—
1977CadillacDeVille——Front Left—
1977CadillacFleetwood——Front Left—
1977ChevroletCaprice——Front Left—
1977ChevroletImpala——Front Left—
1977Oldsmobile98——Front Left—
1977OldsmobileCustom Cruiser——Front Left—
1977OldsmobileDelta 88——Front Left—
1977PontiacBonneville——Front Left—
1977PontiacCatalina——Front Left—
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
43-3142742220004890