Ford 4F27E transmission


The 4F27E is an electronically controlled 4-speed automatic transaxle transmission developed by Mazda and Ford.
Mazda's name for this transmission is FN4A-EL, Ford's name for this transmission is 4F27E.
Mazda's FS5A-EL is the 5-speed successor to this transmission which shares many of the same parts.
The 4F27E is a strengthened 4-speed F-4EAT automatic and only some of the internals were updated. It now has a four-element torque converter that includes a torque converter clutch and geartrain with two planetary gearsets, a transfer-shaft gear final drive, and a larger differential. The hydraulic control system of the 4F27E has six electronically controlled solenoids for shift feel, shift scheduling and TCC apply, controlled by pulse-width modulation.
On Mazda vehicles, this transmission uses Mazda M5 fluid, which is NOT Mercon V or Mercon LV according to Mazda Technical Service Bulletin 0500116. This fluid is made by Idemitsu Kosan. Idemitsu sells the equivalent Type-M fluid in the aftermarket.
The equivalent Ford fluid is FNR5.
Moreover, Mazda vehicles have "M V" written on the dipstick handle.
On the other hand, Ford cars used Mercon V until 2007 MY. After 2007 Ford made some hardware and calibration modifications so that from 2008 MY it is required to use Mercon LV oil. Later Ford authorized back servicing transmissions from 2000 to 2007 with Mercon LV.
Differences between Ford Mercon ATF and Mazda type M5 ATF:
Consequently, carefully refer to the service manual for correct transmission maintenance as Ford and Mazda made their own calibration modification on the transmission so mixing different oils or servicing transmission with the wrong fluid will result in premature wear and transmission damage.
Transmission dry fill capacity: 6.7 Liters / 7 Quarts.
Gear ratios:
Transmission name description:
4F27E
4 speedFront wheel driveMaximum input torque after torque converter:
270 Lb-ft 		fully Electronic control

Applications: