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Symptoms:

  • 2nd Gear damage
  • Frequent roller bearing replacement

Cause:

Axial thrust load of hardened needle rollers on softer gear.

Correction:

These high-quality bronze thrust washers are designed to more effectively withstand the wear and axial thrust load of the mainshaft 2nd gear assembly

Honda, Acura 4-Speed, 2-Shaft

Thrust Washer
Part No. 88406B

Maninshft 2nd gear assembly

View Instructions

On Honda 4-speed transmissions, the mainshaft 2nd gear wears severely from contact with the 2nd clutch needle roller bearing. This bearing also needs frequent replacement due to wear. The wear on the gear and the bearing is due to the axial thrust load on the assembly. Replace the needle bearing with Sonnax part number 88406-SP, 88406B or 88406C. These high-quality bronze thrust washers are designed to more readily withstand the wear and axial thrust load of the mainshaft 2nd gear assembly.

Sonnax No.ApplicationODThickness
88406-SP AK, AS, F4, L4, CA, PL 2.028" .084"
88406B some G4 2.185" .084"
88406C G4, K4, L5, PL5X 2.185" .103"

The gear thrust surface must be in good condition. A worn gear will cause failure.

  • Material: Bronze
  • Outer Dia.: 2.185"
  • Inner Dia.: 1.427"
  • Thickness: 0.083"