Replaces the FN4A-EL/FNR5 deep-pan filter and reseals the pan on 2006-2013 Mazda 3, 5 and 6, CX-7, and 2006-2009 Ford Fusion and Mercury Milan.
A Mazda 3, Mazda 6, Mazda 5 or CX-7 automatic that flares on the 1-2 or 2-3 shift, takes a beat to engage when cold, or drips from the pan is a common sight, and so is the 2006-2009 Ford Fusion, Mercury Milan and Lincoln MKZ or Zephyr four-cylinder with the same five-speed. This kit is the deep-pan internal filter plus a new pan gasket for the FNR5 family (Mazda FS5A-EL) and its four-speed parent, the FN4A-EL, also known as the 4F27E. It replaces Ford 6E5Z-7B155-A and Mazda FNC1-21-500.
The FNR5 is Mazda's five-speed development of the FN4A-EL four-speed transaxle. Both use a pump at the front of the case and a valve body with a bank of shift, converter clutch and pressure control solenoids under the pan. The filter sits at the bottom of the deep pan and feeds the pump. Band and clutch wear in these units is ordinary, and that material collects in the filter media first. As the filter loads up the pump starts to cavitate at idle and when the fluid is cold and thick, so line pressure sags, the clutches apply slowly and the shifts start to slip. The pan gasket keeps the level where it belongs; on a car without a regular dipstick check, a slow leak is how many of these transaxles end up low.
Check the level and the condition of the fluid first. If it smells burnt or is full of friction material, this kit is still required, but it will not undo clutch damage. Transmission Digest points out that on the FNR5 and 4F27E, P0741 usually comes from leakage at the rear pump-stator bushings that grows as the fluid heats and thins, so a code that keeps coming back after a fresh filter means bushing or valve body work. If the pan is coming off for a solenoid job anyway, the 4F27E shift solenoid and filter kit covers both at once.
Listed applications are the 2006-2013 Mazda 3, 2008-2014 Mazda 5, 2006-2013 Mazda 6, 2011-2014 Mazda 2 and 2010-2012 CX-7, and the 2006-2009 Ford Fusion, Mercury Milan and Lincoln MKZ and Zephyr four-cylinder models. This is the deep-pan filter. Mazda and Ford built these transaxles in both four- and five-speed form and with different pan depths, so set the new filter next to the old one and match the outline, the pickup location and the gasket bolt pattern before you start. Send us your year and VIN if you are not sure which unit you have. All our parts for this family are on the 4F27E / FN4A-EL parts page.
Drain the pan, remove the bolts and lower the pan level, since the deep sump holds a good amount of fluid. Pull the old filter off the valve body, check that its O-ring did not stay in the bore, and seat the new one fully. Clean the magnet and scrape any old sealant from the pan and case rails so the new gasket seals on clean metal. Snug the pan bolts evenly in a crossing pattern to the torque in your service data. Fluid is the step people get wrong. Ford's dedicated FNR5 fluid, Motorcraft XT-9-QMM5, is now superseded to Motorcraft MERCON V (XT-5-QMC), and the four-speed 4F27E uses MERCON V. Mazda owners should confirm the fluid in the owner's manual. Never use MERCON LV in these units. Ford's MERCON LV data sheet says it must not go in transmissions that call for FNR5 fluid. Set the level hot. If the shifts were already harsh before the service, the TransGo valve body repair kit addresses the valve bore wear this family is known for, and a unit that is past saving is covered by the FN4A-EL master rebuild kit.
| Fits | FN4A-EL / FNR5 five-speed automatic (also FS5A-EL, 5F27E, 4F27E, J39A), deep pan |
| Replaces OEM | 044-0393, 6E5Z-7B155-A, FNC1-21-500 |
| Kit includes | Transmission filter and pan gasket |
| Common applications | Mazda 2, 3, 5, 6, CX-7; Ford Fusion; Mercury Milan; Lincoln MKZ and Zephyr |
| Item weight | 7.4 oz |
| Ships from | USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for both, in the deep-pan version. Pan depth and filter shape vary across this family, so compare the new filter and gasket to your old parts before installing, or send us your year and VIN.
Ford's FNR5 fluid, XT-9-QMM5, now supersedes to Motorcraft MERCON V (XT-5-QMC). Check your owner's manual for the Mazda specification. Do not use MERCON LV, which Ford says is not for FNR5 applications.
Usually not on its own. On the FNR5 and 4F27E, P0741 most often comes from worn rear pump-stator bushings leaking converter clutch apply oil, a leak that gets worse as the fluid heats up.
No. The kit includes a new gasket, so the pan seals on a fresh surface. Clean all old gasket material and sealant off both rails first.
Not for the filter itself. If the shift feel changed after a valve body or solenoid repair, the controller adapts over normal driving, and a scan tool reset can speed that up.
