Symptoms:

  • C1 Clutch burned
  • K1 Clutch burned
  • Coastdown Neutral
  • Delayed Forward
  • Gear ratio & solenoid codes
  • Erratic shift timing
  • Flare shifts
  • Harsh shifts

Cause:

Wear in C1/K1 clutch control bore allows circuit pressure loss, preventing proper hydraulic actuation of C1/K1 clutches.

Correction:

Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized C1/K1 clutch control valve kit.

09G, 09K, 09M, 6F21WA, TF-60SN, TF-80SC, TF-81SC

Oversized C1/K1 Clutch Control Valve Kit
Part No. 15741-55K

Fits C1 clutch control bore for TF-80SC & TF-81SC. Fits K1 clutch control bore for TF-60SN (09G, 09K, 09M, Mini 6F21WA). Also fits Volvo (AM6), Opel (AF40), Saab (AF40/6), Ford (AF21) and Mazda (AW6A-EL).


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

C1/K1 clutches in listed units are applied in 1st through 4th Gears in conjunction with other clutch packs. As the C1/K1 clutch control valve oscillates and strokes over time, bore deterioration results, which prevents proper hydraulic control of the clutch pack. This can cause flares, slipping, erratic clutch apply timing, ratio codes, and burnt C1/K1 clutches. Reconditioning the bore and installing Sonnax oversized C1/K1 clutch control valve kit 15741-55K restores normal shift operation by re-establishing the hydraulic integrity of the C1/K1 circuit.

  • Annular grooves help center valve in bore to reduce future side-load wear
  • Selectable spring to match OE calibration
  • Hardcoat anodized aluminum valve combats premature wear
  • Valve
  • Springs (2) Selectable

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-80SC Valve Body Layout

Aisin AW TF-80SC Valve Body Layout

Aisin AW TF-81SC Valve Body Layout

Aisin AW TF-81SC Valve Body Layout

Aisin AW TF-60SN Valve Body Layout

Aisin AW TF-60SN Valve Body Layout
  • 09G, 09K, 09M, 6F21WA, TF-60SN, TF-80SC, TF-81SC Oversized C1/K1 Clutch Control Valve Kit 15741-55K
  • 09G, 09K, 09M, 6F21WA, TF-60SN, TF-80SC, TF-81SC Oversized C1/K1 Clutch Control Valve Kit 15741-55K

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, TF-80SC, TF-81SC Oversized C1/K1 Clutch Control Valve Kit Vacuum Test Locations