Product Details

Superior Transmission Parts K4F27E shift correction kit

For Ford, Mercury and Mazda applications

4F27E, FN4A-EL, FNR5, FS5A-EL front wheel drive transmission

This updated kit now covers both the four and five speed models.

This valve body shift correction kit deals with the following problems:

• Soft shifts and flairs
• Premature band failure
• Code P0741 - TCC slippage
• Broken solenoid pressure regulator valve spring
• Worn or damaged accumulator bores
• Accumulator Buddy "Tool" Included
• Includes billet 1-2 dual seal accumulator piston
• Includes billet neutral-drive dual seal accumulator piston

The pistons and brush allow you to reuse previously discarded cases that would not have sealed due to premature ware. This shift correction kit also includes a new, stronger solenoid pressure regulator valve spring to replace the frequently broken stock spring.

This front-wheel drive transmission can be found in the following applications:

Ford 4F27E 4-speed automatic transmission

• Focus 2000-2012
• Transit Connect 2010-2012

Mazda FN4A-EL 4-speed automatic transmission

• MPV 2001-2007
• Protege 1999-2004
• Mazda 2 2007-up
• Mazda 3 2004-up
• Mazda 5 2007
• Mazda 6 2003-2005

Ford FNR5 5-speed automatic transmission

• Fusion 2006-2009

Mazda FS5A-EL 5-speed automatic transmission

• CX7 2009-2012
• Mazda 3 2006-2012
• Mazda 5 2006-2012
• Mazda 6 (4 Cyl) 2006-2012
• MPV 2008-2012

Mercury FNR5 5-speed automatic transmission

• Milan 2006-2009

This transmission is known by the following name variations: 4F27E, FN4AEL, FN4A-EL, FNR5, FS5A-EL, FS5AEL.