Replaces the worn shift and pressure control solenoids plus the internal filter on the Ford and Mazda 4F27E four-speed automatic.
When a Ford Focus, Transit Connect or Mazda 3 with the four-speed automatic starts flaring between gears, banging the 1-2 shift or sitting in second, the solenoids bolted to the valve body are usually the first electrical parts worth replacing. This kit covers the 4F27E, which Mazda calls the FN4A-EL, and replaces Ford XS4Z7A098AB and Mazda FN01-21-500. The product photo shows six solenoids, a new internal filter and a pan gasket, so the solenoids and the filter that collects their debris get changed in the same pan-off job.
The 4F27E is a computer-shifted transaxle. Its on/off shift solenoids route oil to the shift valves that select each gear, a separate solenoid handles the converter clutch, and a pressure control solenoid sets line pressure according to throttle and load. The spool-type solenoids carry fine inlet screens. As clutch and band material builds up in the fluid, those screens load up and the spools drag, so the shift solenoids answer late and the pressure solenoid can no longer ramp pressure smoothly. The result is a shift that is soft and flared or abrupt and harsh, depending on which solenoid is losing the fight.
Read the codes, then road test and note which gears and which shifts misbehave. A ratio or performance code is not proof that a solenoid failed. The ATSG notes on the nearly identical FNR5 say a solenoid E performance code (P0771) is usually a converter clutch that is not holding, or worn stator support bushings, and recommend swapping the two same-style solenoids D and E in their bores to see whether the fault moves. Electrical faults can fool you too: Transmission Digest documented a 2006 Focus whose harsh garage shifts survived a complete valve body and solenoid exchange and were finally traced to a poor stop-light ground in the cargo area. Learn how to tell slipping from flaring in shift flare vs. slip, and check each coil using solenoid testing without a factory scan tool.
Listed for Ford Focus 2010 to 2013 and Transit Connect 2000 to 2014, plus Mazda Protege 1999 to 2003, Mazda 3 2004 to 2010, Mazda 5 2006 to 2010 and Mazda 6 2003 to 2008, four-speed automatic only. Verify the tag on the transmission case says 4F27E or FN4A-EL; the later six-speed FW6A-EL shares nothing with this kit, and later North American Focus models with a dual-clutch automatic are not a match either. Compare the connectors on your old solenoids, or send us the year and VIN. Everything else we carry for this unit is on the 4F27E parts page.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, the kit is listed for the 2004 to 2010 Mazda 3 with the four-speed automatic (FN4A-EL, the Mazda name for the 4F27E). Confirm the tag on the case if the transmission may have been replaced.
The product photo shows six solenoids, a new internal filter and a pan gasket. It replaces Ford XS4Z7A098AB and Mazda FN01-21-500.
Not always. ATSG notes that on the closely related FNR5 this code usually means the converter clutch is not holding or the stator support bushings leak. Swapping the two same-style solenoids to see whether the code follows is a cheap first check.
Mercon V. Refill after the pan is back on and check the level at operating temperature.
Clear the codes and drive the car through every upshift and downshift under light and moderate throttle so the computer can adapt to the new solenoids.
Only if the car actually has the 4F27E four-speed. Later North American Focus models use a dual-clutch automatic that this kit does not fit, so check the transmission tag or send us the VIN.
