Complete overhaul kit for the Hyundai and Kia A4CF1 four-speed automatic: frictions, steels, gaskets, seals and sealing rings for a 2.0L rebuild.
A 2007-2010 Hyundai Elantra or a 2006-2009 Kia Spectra or Spectra5 with the 2.0L engine and a four-speed automatic that slips or flares on the 2-3 shift as it warms up, or sits for a second before it takes Drive on a cold morning, is usually past the point where a fluid change helps. This is a master overhaul kit for that transaxle, the A4CF1 and its 2.0L-rated version, the A4CF2: friction plates, steel plates, the gasket and seal set, lip seals and sealing rings for a complete teardown.
The A4CF family is Hyundai and Kia's compact front-drive four-speed. Gearboxlist notes that it shares much of its design with the Mitsubishi-derived F4A41: a torque converter, planetary gearsets, and a valve body with five solenoids plus a variable force pressure solenoid applying the clutches. The 1.6L version is tagged A4CF1, and the higher-torque version behind the 2.0L Beta engine in the Elantra HD and Spectra is generally tagged A4CF2. The clutch frictions, especially the underdrive and overdrive packs, take the heat when line pressure falls. Hardened piston and drum seals bleed apply pressure, the packs slip, and the slip burns more friction. A master kit breaks that cycle by renewing all of it at once.
Separate a control fault from a mechanical one first. Transmission Digest documents the A4CF2's internal wiring ribbon and case connector as a common cause of third-gear failsafe with the check engine light on, and that is a wiring repair, not a rebuild. Gearboxlist also lists broken solenoid wiring as the most common A4CF1 complaint, often after overheating. If the fluid is clean and codes point to circuits, read our solenoid testing guide. If the fluid is burnt and the car slips, the flare vs slip guide explains what each points to. A worn pressure regulator bore in the valve body can also cook the clutches, so consider the A4CF1 valve body if the unit has a long history of soft or harsh shifts.
Listed for the Hyundai Elantra 2.0L 2007-2010 and the Kia Spectra and Spectra5 2.0L 2006-2009 with the four-speed automatic. Hyundai and Kia built close variants of this family, including the smaller A4CF0, and revised parts during production, so read the code on the case tag and compare the plate counts in the photos with your old packs. Send us the year and VIN if in doubt. More overhaul kits are in the rebuild kits collection.
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The 2.0L Beta engine generally pairs with the A4CF2, the higher-torque version of the family. This kit is listed for both. Read the code on the transmission case tag before ordering.
No. It includes friction plates, steel plates, the gasket set, seal set and sealing rings. The filter, oil pump, valve body and other hard parts are not included.
Not necessarily. The internal wiring ribbon and case connector are a known cause of third-gear failsafe on these units. Check the wiring and codes before tearing it down.
This four-speed family is specified for Hyundai SP-III ATF. Use SP-IV only if your owner's manual lists it. Total capacity is about 6.8 liters.
A new filter, any worn bushings, and the cooler or a full cooler flush. If the unit had harsh or soft shifts for a long time, inspect or replace the valve body too.
