Symptoms:

  • 1-2 Flare
  • 5-6 Flare
  • 2nd Slip
  • 6th Slip
  • Gear ratio & solenoid codes
  • B1 Clutches burned
  • Erratic shift timing
  • Harsh shifts

Cause:

Wear at the B1 clutch control valve bore affects apply and release rate.

Correction:

The replacement Sonnax sleeve and valve corrects circuit pressure loss and restores control of clutch apply and release.

Warning:

Required tool kit F-15741-TL22 is no longer in production. Check with your distributor for availability.

09G, 09K, 09M, 6F21WA, TF-60SN

B1 Clutch Control Valve Kit
Part No. 15741-22K


You need this if... View Instructions Find a Distributor

B1 clutches in listed units are applied in 2nd and 6th Gears in conjunction with other clutch packs. As the B1 clutch control valve oscillates and strokes over time, bore deterioration results, which prevents proper hydraulic control of the B1 clutch pack. This can cause flares, harsh shifts, slipping, erratic clutch apply timing, ratio codes, and burnt B1 clutches.

Reconditioning the bore and installing Sonnax B1 clutch control valve kit 15741-22K restores normal shift operation by shoring up the hydraulic integrity of the B1 circuit.

  • Annular grooves help center valve in bore to reduce future side-load wear
  • Sonnax spring matches OE calibration
  • Hardcoat anodized aluminum valve combats premature wear
  • Wear-resistant sleeve provides over 80% more support than OE casting
  • Valve
  • Sleeve
  • Spring

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Aisin AW TF-60SN Valve Body Layout

Aisin AW TF-60SN Valve Body Layout
  • 09G, 09K, 09M, 6F21WA, TF-60SN B1 Clutch Control Valve Kit 15741-22K
  • 09G, 09K, 09M, 6F21WA, TF-60SN B1 Clutch Control Valve Kit 15741-22K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

09G, 09K, 09M, 6F21WA, TF-60SN B1 Clutch Control Valve Kit Vacuum Test Locations