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F4A22 Forward Clutch Steel 42128A (.071”)

Catalog name:
Steel, KM170/KM171/KM172/KM175/KM177 Forward Clutch (.071”) (24 Teeth) (3.970”ID) 1979-88
Steel, KM170/KM171/KM172/KM175/KM177 Forward Clutch (.071”) (24 Teeth) (3.970”ID) 1979-88 — Part # 42128A
Part # 42128A
Type:
Clutch, steel
Transmissions:
A4AF1, A4AF2, A4AF3, A4BF1, A4BF2, F4A22, F4A33-1, F4A33-1 A, KM170, KM170-1, W4A-32, W4A33-1
Years:
1979-88
Size:
.071”; 24 Teeth; 3.970”ID
Data as of:
2026-10-17

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Cross-reference numbers

NumberSystemStatus
MD707255OEM✓✓ confirmed by 2 sources
42128AWIT✓ catalog
45332-21700OEM? unverified
77255Precision? unverified
511070Raybestos? unverified

Where it fits

DiagramPositionTransmission page
A4AF1128—
A4AF3128A4AF3
F4A33-1128F4A33-1
KM170128—
Other parts in A4AF1 position 128:
  • 42128E Steel, KM171-5/KM172-5/KM175-5/KM176-5/KM177-8/A4AF1/A4BF1/A4BF2/W4A32 Forward Clutch (.071”) (24 Teeth) (4.100”ID)…
  • 42128L Steel, A4AF3 Forward Clutch (.077”) 24 Teeth (4.100”ID) 1993-Up
  • 42128LA Steel, A4AF1/A4AF2/A4BF1 Forward Clutch (.087”)(24 Teeth)(4.100”ID) 1999-Up
  • 42128M Steel, F4A33/W4A33 Forward Clutch (.071”) (26 Teeth) (4.360”ID) 1990-Up
Other parts in A4AF3 position 128:
  • 42128E Steel, KM171-5/KM172-5/KM175-5/KM176-5/KM177-8/A4AF1/A4BF1/A4BF2/W4A32 Forward Clutch (.071”) (24 Teeth) (4.100”ID)…
  • 42128L Steel, A4AF3 Forward Clutch (.077”) 24 Teeth (4.100”ID) 1993-Up
  • 42128LA Steel, A4AF1/A4AF2/A4BF1 Forward Clutch (.087”)(24 Teeth)(4.100”ID) 1999-Up
  • 42128M Steel, F4A33/W4A33 Forward Clutch (.071”) (26 Teeth) (4.360”ID) 1990-Up
Other parts in F4A33-1 position 128:
  • 42128E Steel, KM171-5/KM172-5/KM175-5/KM176-5/KM177-8/A4AF1/A4BF1/A4BF2/W4A32 Forward Clutch (.071”) (24 Teeth) (4.100”ID)…
  • 42128L Steel, A4AF3 Forward Clutch (.077”) 24 Teeth (4.100”ID) 1993-Up
  • 42128LA Steel, A4AF1/A4AF2/A4BF1 Forward Clutch (.087”)(24 Teeth)(4.100”ID) 1999-Up
  • 42128M Steel, F4A33/W4A33 Forward Clutch (.071”) (26 Teeth) (4.360”ID) 1990-Up
Other parts in KM170 position 128:
  • 42128E Steel, KM171-5/KM172-5/KM175-5/KM176-5/KM177-8/A4AF1/A4BF1/A4BF2/W4A32 Forward Clutch (.071”) (24 Teeth) (4.100”ID)…
  • 42128L Steel, A4AF3 Forward Clutch (.077”) 24 Teeth (4.100”ID) 1993-Up
  • 42128LA Steel, A4AF1/A4AF2/A4BF1 Forward Clutch (.087”)(24 Teeth)(4.100”ID) 1999-Up
  • 42128M Steel, F4A33/W4A33 Forward Clutch (.071”) (26 Teeth) (4.360”ID) 1990-Up
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