Dorman 611-139 Wheel Lug Nut - Front or Rear

Dorman 611-139 Wheel Lug Nut

Dorman 611-139 is a metric wheel lug nut built from carbon steel and tested to automotive industry standards for strength, longevity, and safety. It is a direct-fit style replacement for select GM vehicles, including Buick Regal, Oldsmobile Cutlass Calais, and Pontiac Grand Prix applications that use an M12-1.50 fine thread and 60-degree conical seat.

Key Features

• Steel construction for dependable wheel retention
• M12-1.50 fine thread with clockwise thread direction
• 60-degree conical seat for proper wheel mating surface engagement
• 19 mm hex size for standard service tools
• Natural finish with dometop capped nut design
• Metric lug nut for select Buick, Oldsmobile, Pontiac, and Chevrolet applications

Detailed Description

This wheel lug nut is engineered for vehicles that require a metric, fine-thread fastener with a conical seat. The Dorman 611-139 matches common OE-style specifications used across a range of late-1970s through early-1990s GM passenger cars, including Buick Skylark, Buick Riviera, Oldsmobile Omega, Pontiac Phoenix, and Chevrolet Citation. This part cross-references Remy 92542 and Spectra Premium 98103 for the same application.

Use Dorman 611-139 when replacing worn, damaged, or corroded lug nuts on vehicles that call for M12-1.50 wheel hardware. The dometop capped nut design and steel construction support secure wheel mounting when the wheel and lug nut seat are matched correctly.

Vehicle Fitment

• Fits 1988-1991 Oldsmobile Cutlass Calais, N/A
• Fits 1982-1984 Oldsmobile Cutlass Calais, N/A
• Fits 1982-1988 Oldsmobile Firenza, N/A
• Fits 1984-1987 Buick Regal, N/A
• Fits 1985-1987 Oldsmobile Calais, N/A
• Fits 1987 Oldsmobile Cutlass, N/A
• Fits 1982-1987 Oldsmobile Cutlass Supreme, N/A
• Fits 1982-1987 Pontiac Grand Prix, N/A
• Fits 1980-1986 Buick Skylark, N/A
• Fits 1982-1986 Pontiac Bonneville, N/A
• Fits 1979-1985 Buick Riviera, N/A
• Fits 1980-1984 Oldsmobile Omega, N/A
• Fits 1980-1984 Pontiac Phoenix, N/A
• Fits 1982-1983 Buick Regal, Front
• Fits 1982-1983 Buick Regal, Rear
• Fits 1982-1983 Chevrolet Citation, N/A
• Fits 1982-1983 Oldsmobile Cutlass Cruiser, N/A
• Fits 1982 Buick Century, N/A

Installation Notes and Tips

• Verify the wheel mating surface before installation to confirm the 60-degree conical seat matches the wheel.
• Confirm thread size, pitch, and right-hand thread direction before tightening.
• Use the correct 19 mm socket and tighten lug nuts in the manufacturer-recommended sequence and torque specification.
• Inspect wheel studs for wear or damage before installing new lug nuts.

Quality Assurance

Dorman manufactures this lug nut from carbon steel and tests it to demanding automotive industry standards to support strength, durability, and safety in service.