TF-81SC Solenoid Kit, remanufactured and ready to install. Fits the TF-81SC. Ships fast from the USA.
The Aisin TF-81SC six-speed, which Ford calls the AF21 and Mazda the AW6A-EL, sits in a lot of mid-2000s family cars: Ford Fusion, Mercury Milan and Lincoln MKZ/Zephyr, Mazda 6, CX-7 and CX-9. When one of these starts flaring between gears, drops into limp mode, or sets shift solenoid codes, this kit replaces the complete set of eight valve body solenoids and, as pictured, the internal wiring harness that feeds them.
The TF-81SC is fully electronic. Sonnax's solenoid chart for this unit lists eight solenoids: two on/off shift solenoids (SSA and SSB) that ground to the case, and six linear solenoids (SSC, SSD, SSE, SSF, the TCC solenoid and the PCA/EPC pressure control solenoid) that the TCM drives with variable current to control clutch apply pressure, converter lockup and line pressure. The linear units are what make the shifts smooth, and they are also what wear: as the valve and bore inside each solenoid wear, pressure control gets sloppy and the TCM can no longer hold a clean shift.
Be careful with that last group. Sonnax ties P0729, P0734 and P0735 on this unit to wear in the solenoid modulator valve, the valve body bore that sets feed pressure to the solenoids. Excess feed pressure floods the solenoids and slows their response; low pressure hurts engagements. New solenoids will not fix a worn modulator bore.
Scan for codes first, then check resistance at the case connector so you do not have to drop the pan to learn something. Per Sonnax, SSA and SSB read 11 to 15 ohms to ground, and each linear solenoid reads roughly 5 to 7 ohms across its two pins. An open or shorted reading points to a solenoid or the internal harness, both of which this kit replaces. If all eight read correctly and you have ratio codes or a harsh 2-3 shift, the valve body is the more likely problem; compare the TF-81SC valve body or the TF-81SC valve body with solenoids.
The application chart supplied with this kit lists the 2006-2008 Ford Fusion, Mercury Milan, Lincoln Zephyr/MKZ and MKX six-speed, the 2005-2012 Mazda 6, 2007-2009 Mazda CX-7 and CX-9, and the Mazda MPV and Ford Mondeo six-speed. It also lists several Volvo models and the 2006-2014 Land Rover Freelander, which use the closely related TF-80SC; the solenoid connectors and harness routing are not identical across every one of those, so match the connectors on your old harness to the photo, or send us your year and VIN before ordering. All TF-80SC and TF-81SC parts are in our Aisin transmission collection.
Most rebuilders fit a fresh TF-80SC/AF21 filter and gasket kit during the same job. If the transmission has high mileage and the 2-3 shift was harsh, add the TF-81SC shift kit while the valve body is out.
| Fits | TF-81SC |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 2006-2008 Fusion six-speed automatic is listed on this kit's application chart. Confirm your car has the Aisin six-speed and match the harness connectors to the photo, or send us your VIN.
Eight: two on/off shift solenoids (SSA, SSB) and six linear solenoids (SSC, SSD, SSE, SSF, TCC and the PCA/EPC line pressure solenoid). This kit replaces all eight plus the harness shown.
Per Sonnax, the on/off solenoids read 11 to 15 ohms and the linear solenoids about 5 to 7 ohms. Readings far outside that, or open circuits, mean a bad solenoid or harness.
Not always. Sonnax links those ratio codes on this unit to a worn solenoid modulator valve bore in the valve body. Test the solenoids first, and plan on valve body work if they read good.
Yes. Clear codes and reset the TCM adaptive tables with a scan tool that supports your vehicle, then road test so the TCM can relearn clutch fill on every shift.
They are closely related Aisin six-speeds, and this kit's chart lists both Ford/Mazda and Volvo/Land Rover models, but connectors and harness routing differ between some applications. Match your connectors or send your VIN.
