B1 APPLY CONTROL PLUNGER KIT
# 72791K

B1 Apply Control Plunger Kit

B1 APPLY CONTROL PLUNGER KIT

Symptoms:

  • 5th Slip
  • Reverse slip
  • B1 Clutches burned
  • Poor shift quality
  • Harsh/No engine braking

Cause:
B1 apply control plunger sleeve deterioration allows pressure loss that leads to drivability concerns.

Correction:
Recover hydraulic control and renew shift performance by installing Sonnax drop-in B1 apply control plunger kit.


Toyota/Lexus vehicles equipped with A750E and A750F transmissions may exhibit 5th Gear complaints and a burnt B1 brake as well as low line pressure, resulting in poor shift quality and slipping in Forward or Reverse. These issues can often be traced to wear in the B1 apply control plunger sleeve, which allows line pressure to escape and cause drivability concerns. Installing Sonnax B1 apply control plunger kit 72791K eliminates pressure loss, revives B1 apply pressure control and restores shift quality.

  • Sleeve manufactured from highly wear-resistant aluminium
  • Hardcoat anodized aluminium valve combats premature wear
  • Annular groove helps centre valve in sleeve to reduce side-load wear
  • Drop-in Zip Valve™ parts install quickly and easily

Content:

  • Valve
  • Sleeve

72791K Instruction Sheet

Type of Product: Sundry Parts
Qty Needed:
Years:
Alternative #: