Master rebuild kit for the A4AF1, A4AF2 and A4AF3 four-speed used in the Hyundai Accent, Elantra, Tiburon and Kia Rio, with frictions, steels and gaskets.
This is the complete soft-parts and clutch kit for the Hyundai and Kia A4AF four-speed automatic, the unit found under the Hyundai Accent from 1999 on and the 2005-2011 Kia Rio. Rebuilders know it by kit numbers B059820D, B059880D and W059881D, and this kit replaces all three. If your car engages Drive or Reverse late, flares between second and third, or slips under load once the fluid has gone dark, and you have decided to overhaul rather than swap the unit, this box has the frictions, steels, gaskets and seals for the job.
Hyundai's A4AF units were developed with Mitsubishi and are closely related to the F4A21. The A4AF2 was the 1.5L version, rated at about 140 Nm, with a 2.846 first gear and an overdrive fourth of 0.685. Like every unit in the family, it shifts by applying clutch packs with oil pressure, and it depends on bushings and sealing rings to keep that pressure where it belongs. Over time the frictions glaze or burn, the lip seals and square-cut rings harden, and pressure leaks away. This kit replaces all of it: friction plates, steel plates, the pan and case gaskets, the valve body separator gaskets, sealing rings, square-cut and round O-rings and the lip seals. In short, it renews everything that wears in a teardown without replacing hard parts.
On these units the solenoid and pressure codes often trace back to worn clutches and leaking piston seals, not the solenoids themselves. Clutch debris also gets into the valve body, which is why it should be cleaned and inspected during any rebuild.
Check the fluid hot and compare it against our ATF color and smell chart. Then pay attention to how the problem feels. A flare, where the revs rise briefly between gears, and a true slip have different causes; our flare versus slip guide helps separate them. A pressure test with a line pressure gauge kit confirms whether the pump and seals can still hold pressure before you commit to an overhaul.
Listed fitment: Hyundai Accent 1.5L 1999-2003 and 1.6L 2001-2011, Elantra 2.0L 1999-2000, Tiburon 2.0L 1999-2001, Kia Rio 1.6L 2005-2010 and Rio5 1.6L 2006-2011, across the A4AF1, A4AF2 and A4AF3. One caution for 2.0L owners: Hyundai also built the closely related A4BF family for larger engines, and reference data places the A4BF2 in the Elantra and Hyundai Coupe of the same years. Read the unit code on your case tag before ordering, and if it reads A4BF, contact us first. Send us the year and VIN if the tag is missing. See our rebuild kits category for other units.
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| Kia fitment |
It replaces B059820D, B059880D and W059881D for the Hyundai/Kia A4AF1, A4AF2 and A4AF3.
It is listed for the 1999-2000 Elantra 2.0L, but some 2.0L cars carry an A4BF unit rather than A4AF. Check the case tag before ordering and contact us if it reads A4BF.
Friction plates, steel plates, pan and case gaskets, valve body separator gaskets, sealing rings, square-cut and round O-rings, and lip seals. Hard parts such as drums, the pump and bushings are not included.
Inspect bushings, the pump and the valve body bores. Bushing wear is a known cause of low pressure and burned clutches in this family.
Hyundai ATF SP-III or an approved equivalent. Fill to the hot level after the engine is running and the shifter has been cycled through each range.
