



Thirteen teeth. Clockwise. Flange 70mm across two bolts. That is what the 2.0 G4NA and G4ND engines take, and it is also the first thing to check before ordering, because this family has two different 2.0 starters in it. The G4KD version runs 11 teeth. They look the same in a photo. They do not interchange.
Inside is nothing exotic. 12 volt, 1.2 kW, reduction gear, M8 B+ stud and a plug for the signal wire. Same layout the factory used, so cranking speed stays where the ecu expects it and cold starts in winter feel like they always did.
How these fail, in order. Solenoid contacts pit and burn back until there is not enough pad left to pass current, and you get the click. Brushes wear down. Pinion teeth round off and start chewing the ring gear, which is the grinding noise. Road salt works into the nose bearing and the whole thing drags. None of that is fixed by a new battery, which is what most people try first.
Numbers it covers, since that is usually the deciding factor: 36100-2E200 and 361002E200, the suffix run 2E121, 2E121RU, 2E131, and the aftermarket cross 255716, 255716V, 150.963.132.120, S9336S, 0986UR1827, CST32171, CST32171AS, CST32171GS, 324089132, 255059, 11041015, LRS03896, STM1435, ST02025, 1209395, 1210405, 1206214, S000V210405, S000H210405, 10996N, 19301N, 19301OS.
Cars: Hyundai Elantra VI (AD) 2.0 G4NA 2015 to 2020. Kia Carens IV 2.0 2013 to 2016, Cerato III (YD) 2.0 2016 to 2018, Optima 2.0 in both the FSGDS6B and JF bodies including the Sportswagon 2013 to 2019, Seltos 2.0 from 2019, Soul II and III 2.0 from 2014, Sportage III and IV 2.0 2010 to 2022.
Fitting is two bolts and two connections. Negative terminal off. Plug out, M8 nut off the stud, two flange bolts out. On the Elantra and Sportage it drops out from below. On the Soul, move the air box first and it comes up and out. Wipe the mating face clean, seat the new one, torque, reconnect in reverse. Torque figures and thread specs we leave to your workshop manual, we would rather not print a number we cannot stand behind.
Six months cover, replacement not repair. Order five, they ship in ten to fifteen days off an ISO 9001 line, one starter per carton.
| Brand | Model | Model Code | Year |
|---|---|---|---|
| Hyundai | Hyundai Elantra VI Sedan (AD/ADA) 2.0 (G4NA) | ELANTRAVIAD20G4NA | 2015–2020 |
| Kia | Kia Carens IV 2.0 MPI (G4NA) | CARENSIV20G4NA | 2013–2016 |
| Kia | Kia Cerato III Sedan (YD) 2.0 (G4NA) | CERATOIIIYD20G4NA | 2016–2018 |
| Kia | Kia Optima (FSGDS6B) 2.0 CVVT (G4NA) | OPTIMAFSG20G4NA | 2013–2015 |
| Kia | Kia Optima (JF) 2.0 CVVL (G4ND) | OPTIMAJF20G4ND | 2015–2019 |
| Kia | Kia Optima Sportswagon (JF) 2.0 CVVL (G4ND) | OPTIMAJFSW20G4ND | 2016–2019 |
| Kia | Kia Seltos (SP2/SP2I) 2.0 MPi (G4NH) | SELTOSSP220G4NH | 2019–2022 |
| Kia | Kia Soul II (PS) 2.0 CVVT (G4NA) | SOULIIPS20G4NA | 2014–2018 |
| Kia | Kia Soul III (SK3) 2.0 MPI (G4NH) | SOULIIISK320G4NH | 2019–2022 |
| Kia | Kia Sportage III (SL) 2.0 CVVT (G4NA) | SPORTAGEIIISL20G4NA | 2010–2015 |
| Kia | Kia Sportage IV (QL/QLE) 2.0 (G4NA) | SPORTAGEIVQL20G4NA | 2015–2022 |