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AW A40 Series Coast Steel 57124AA (Brake #1)

Catalog name:
Steel, A40 Series Coast (Brake #1)/ Intermediate (Brake #2) & Overdrive Clutch (.071”) (4.00”ID) (8 Tall Teeth)
Steel, A40 Series Coast (Brake #1)/ Intermediate (Brake #2) & Overdrive Clutch (.071”) (4.00”ID) (8 Tall Teeth) — Part # 57124AA
Part # 57124AA
Type:
Clutch, steel
Transmissions:
03-70, 03-71L, 03-72L, A40, A40D, A42DL, A540E, A541E, A55
Size:
.071”; 4.00”ID; 8 Tall Teeth
Data as of:
2026-10-17

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Cross-reference numbers

NumberSystemStatus
35634-22090OEM✓✓ confirmed by 2 sources
57124AAWIT✓ catalog
35634-22030OEM? unverified
35634-22060OEM? unverified
35634-30060OEM? unverified
46508Precision? unverified
511868Raybestos? unverified
778302Ref? unverified

Where it fits

DiagramPositionTransmission page
03-72L124—
A40124—
A540E124A540E
Other parts in 03-72L position 124:
  • 57124A Steel, A40 Series Coast (Brake #1)/ Intermediate (Brake #2) Clutch (.079”) (4.00”ID) (8 Tall Teeth)
  • 57124B Steel, A40 Series Intermediate (Brake #2) Clutch (.092”) (4.00”ID) (8 Tall Teeth) 1980-Up
  • 57124C Steel, A40 Series Intermediate (Brake #2) Clutch .118” (4.00”ID) (8 Teeth) 1985-Up
  • 57124D Steel, A40 Series Overdrive Clutch .079” (4.60”ID) (7 Teeth) 1981-Up
  • 57124E Steel, A40 Series Overdrive Clutch .091” (4.60”ID) (7 Teeth)
Other parts in A40 position 124:
  • 57124A Steel, A40 Series Coast (Brake #1)/ Intermediate (Brake #2) Clutch (.079”) (4.00”ID) (8 Tall Teeth)
  • 57124B Steel, A40 Series Intermediate (Brake #2) Clutch (.092”) (4.00”ID) (8 Tall Teeth) 1980-Up
  • 57124C Steel, A40 Series Intermediate (Brake #2) Clutch .118” (4.00”ID) (8 Teeth) 1985-Up
  • 57124D Steel, A40 Series Overdrive Clutch .079” (4.60”ID) (7 Teeth) 1981-Up
  • 57124E Steel, A40 Series Overdrive Clutch .091” (4.60”ID) (7 Teeth)
Other parts in A540E position 124:
  • 87124A Steel, A540 2nd Brake Clutch (.071”) 12 Teeth (4.60”ID) 1988-Up
  • 87124B Steel, A541E 2nd Brake Clutch (.071”) 10 Teeth (4.86”ID) 1994-Up (Wide Splined)
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