Hyundai Motor Group
Source-verified model
Hyundai Motor Group A5HF1
The family of front-wheel drive 5-speed automatic transmissions A5GF1, A5HF1 (F5A51) from Hyundai has been modified since 2005 on the basis of 4-speed predecessor F4A51 and installed on the range FWD and AWD vehicles of Kia (Sportage, Sorento...) and Hyundai (Sonata, Santa Fe, Opirus, Karens... ) for the entire range of engines from 2 up to 3.5 liters. Mitsubishi uses this transmission named as F5A51.0. This front drive family of transmissions is related to the rear drive V4A51. Parts are maximally unified and interchangeable.
Speeds
5
Type
AT
Drive
FWD/4WD
ATF capacity (L)
8,4
ATF change (L)
3,5
ATF type
SP III
Other and alternative codes of this transmission
HT04
A5HF1
P731
HT84
F5A51
S731
HT94
verified naming
OEM designation
source name
Common problems & symptoms
Problems and symptoms reported for this transmission, compiled from repair sources. Not a complete list.
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Pump Bushing and Seal Wear
Pump bushing and seal fail first due to worn torque converter clutch vibrations and contaminated oil accelerating aging.
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Pump Assembly Replacement
Pump assembly requires replacement after prolonged operation with worn torque converter clutch causing vibrations.
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EPC Solenoid VFS Failure
Solenoid EPC (VFS) electric controller is first solenoid to fail due to high operational loads on valve body.
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Oil Shortage Seal Leaks
Worn-out seals lead to oil shortages causing transmission component problems and accelerated internal wear.
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No Forward Slips Reverse
Transmission exhibits no forward movement and slipping in reverse, indicating clutch pack or hydraulic circuit failure.
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Input Output Speed Sensors
Input and output shaft speed sensors are first electrical components to reach end of service lifespan.
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Drum and Sun Gear
Drum with sun gear requires replacement, listed among commonly replaced components during overhaul.
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Brake Band Wear
Brake band is a frequently replaced component included in standard overhaul parts list.
Parts categories
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About this transmission
Transmission general data
The family of front-wheel drive 5-speed automatic transmissions A5GF1, A5HF1 (F5A51) from Hyundai has been modified since 2005 on the basis of 4-speed predecessor F4A51 and installed on the range FWD and AWD vehicles of Kia (Sportage, Sorento...) and Hyundai (Sonata, Santa Fe, Opirus, Karens... ) for the entire range of engines from 2 up to 3.5 liters. Mitsubishi uses this transmission named as F5A51.0. This front drive family of transmissions is related to the rear drive V4A51. Parts are maximally unified and interchangeable.
Technical issues and repair guidelines
With regard to clutch packages this automatic transmission is well balanced. These packages work properly during their lifespan. Problems are mainly related to wear-out of seals leading to oil shortages and problems with transmission components.The pump assembly is also replaced under the condition of a long-term operation with worn-out torque converter clutch and subsequent vibrations. Contaminated oil speeds up ageing of the pump and bushing. The pump bushing and the seal are the first to get out of order because of above mentioned problem.
Worn-out bushings are repaired and replaced quite frequently. Then the list of parts to be replaced includes the drum with a sun gear and the brake band. As far as the electrics of this transmission is concerned, speed sensors of the input and output shafts are the first to reach the end of their service lifespan. Solenoids Shift are standardized in all valve bodies. These solenoids operate properly for quite a long time, Solenoid-electric controller EPC (VFS) is the first to get out of order because of high loads.
Vehicle fitment explorer
Confirmed vehicle applications. Every row is drawn from our source-verified fitment database.
| Make | Model | Year | Drive | Engine |
|---|---|---|---|---|
| Brilliance | H530 | 14-16 | 5 SP FWD | L4 1.5L 1.6L |
| Chery | TIGGO | 13-14 | 5 SP F/4WD | L4 2.0L |
| Hyundai | AZERA | 06-10 | 5 SP FWD | V6 3.3L 3.8L |
| Hyundai | ENTOURAGE | 07-10 | 5 SP FWD | V6 3.8L |
| Hyundai | EQUUS | 06-08 | 5 SP FWD | V6 3.3L 3.8L |
| Hyundai | GRANDEUR | 05-10 | 5 SP FWD | L4 2.2L V6 2.7L 3.3L 3.8L |
| Hyundai | SANTA FE | 07-10 | 5 SP F/4WD | L4 2.0L 2.2L V6 3.3L |
| Hyundai | SONATA | 06-09 | 5 SP FWD | V6 3.3L |
| Inokom | SANTA FE | 12-13 | 5 SP F/4WD | V6 3.3L |
| KIA | AMANTI | 06-09 | 5 SP FWD | V6 3.5L 3.8L |
| KIA | CARNIVAL | 05-14 | 5 SP FWD | L4 2.9L V6 3.8L |
| KIA | OPIRUS | 05-09 | 5 SP FWD | V6 2.7L 3.3L 3.8L |
| KIA | SEDONA | 06-11 | 5 SP FWD | V6 3.8L |
| KIA | SORENTO | 10-15 | 6 SP F/4WD | L4 2.2L |
| Zhonghua | H530 | 11-16 | 5 SP FWD | L4 1.5L 1.6L |
| Zhonghua | JUNJIE | 10-16 | 5 SP FWD | L4 1.5L 1.8L |
| Zhonghua | ZUNCHI | 12-16 | 5 SP FWD | L4 1.5L 1.8L |
Related transmissions
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Sources & Contribution
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