Overhaul kit for the Ford 4F27E / Mazda FN4A-EL with frictions, steels, band, filter, pump bushing and every gasket and seal for a full teardown.
If your Focus, Fiesta, Transit Connect, Mazda3, Mazda5 or Mazda6 has started flaring between 2nd and 3rd, slipping out of 3rd or 4th under light throttle, or coming back from a fluid change with dark, burnt-smelling ATF, the unit underneath is almost always the 4F27E four-speed. Mazda calls the same transaxle the FN4A-EL. This kit is for the person who has decided the transmission is coming out and wants the soft parts, the friction material, the band, the pan filter and the front pump bushing in one box instead of chasing five separate orders.
The 4F27E is a four-speed front-wheel-drive transaxle built from two planetary gearsets, a converter with a lockup clutch, and a band that holds the reaction member for 2nd and 4th. Six solenoids on the valve body set line pressure, choose the shift valve positions and apply the converter clutch. When the friction plates glaze or the band lining wears thin, the solenoids can command a shift perfectly and the clutch pack still slides, which is why a box that throws no codes can still slip. This kit replaces the wear items in every clutch pack: a full friction plate set, a full steel plate set, a new band, the overhaul gasket and seal set (pan gasket, valve body separator gaskets, metal-clad seals, O-rings and sealing rings), a pan filter and the front pump bushing that supports the converter hub. Bonded pistons are not part of this kit, so plan to reuse yours if they pass inspection.
Pull the pan first. A light gray paste on the magnet is normal; friction material, brass or steel slivers mean a pack is gone. With a scan tool, compare engine speed to turbine speed in each gear: slip that grows with temperature points to clutch or band wear, while a code that sets instantly is more often electrical. Our transmission slipping diagnosis guide walks through that test, and flare versus slip explains why a 2-3 flare is not always a burned band. If the only complaint is a converter-slip code, read converter hub and pump bushing wear before you commit to a full teardown.
The listing covers the Ford Focus 1998-2018, Fiesta 2008-2017 and Transit Connect 2009-2013, plus Mazda3 2003-2018, Mazda5, Mazda6 2002-2016, Protege 1999-2004, Tribute 2.3L 2003-2008 and MPV 2.3L. The 4F27E was built for engines up to about 2.3L, so a V6 Mazda6 or a 5-speed car is a different transmission. Check the tag on the case, and if you are unsure send us your year and VIN before ordering. Browse every part for this unit in our 4F27E collection.
Soak every new friction in clean ATF for at least 20 minutes before stacking, and measure each pack clearance with a feeler gauge against the service spec rather than trusting the old steel count. Fit the new band and inspect the 2-4 servo piston and pin: TransGo documents servo pistons cracking around the pin and a loose pin causing repeat 3rd clutch failures, so a new band alone will not save a damaged servo. Press in the new pump bushing and check converter hub fit. While the case is open, look hard at the stator support bushings too; they are not in this kit, but Transmission Digest identifies leaks there as the usual cause of P0741. Many rebuilders replace the valve body wear points at the same time with a TransGo shift kit, and a fresh solenoid block is worth considering on a high-mile unit. Refill with the fluid on your dipstick or in your owner manual: Ford Mercon V through 2007 and Mercon LV from 2008 on Ford models, and Mazda M5 (Type M) on Mazda models. Do not mix them. Clear adaptives after the first drive.
| Transmission | |
| Includes | |
| Ford fitment | |
| Mazda fitment |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It includes frictions, steels, the band, the overhaul gasket and seal set, a pan filter and the front pump bushing. If your bonded pistons are cracked or the rubber is hard, buy a piston kit or one of our master kits that include them.
It fits the 4-cylinder Mazda6 with the FN4A-EL. The V6 and 5-speed automatic cars use different transmissions. Check the transmission tag or send us your VIN.
Yes. The band holds the reaction member in 2nd and 4th, and a new one is included. Inspect the 2-4 servo piston and pin as well, because a cracked piston will slip a new band.
Ford models use Mercon V through 2007 and Mercon LV from 2008, and Ford allows LV in the earlier units. Mazda models use Mazda M5 / Idemitsu Type M. Total capacity is roughly 7 liters dry, so fill close to that after a rebuild and set the final level hot on the dipstick.
Only if the cause is a burned converter clutch circuit or pump-area leakage that the rebuild addresses. The most common cause is wear at the stator support bushings, which you should inspect and replace during the rebuild.
