
Starter Motor OK30A-18400 12V 0.9KW 8T Hyundai Kia
Applicable models:HYUNDAI / KIA (confirm specific model, engine and OE number before ordering)
Reference part number:OK30A-18400, KK326-18400, OK326-18400, RK30A18400U, KB30318400, KB30318400A, KB30818400, B50518400, B67618400A, STD1098RB, STM1098RB, STV9098WA, STD1098BA, STD1098KR, STM1098KR, STM1098MA, STM1098TJ, STM1098DJ, STA1098RB, JS1098, 361002X000, 361002X000R, 361002Y000, M3T24482H, M3T24482J, M3T24482K, M3T38881, M3T38882, M3T43581, M3T49381, M3T30881, M3T33281, TM000A18001, BN361002X000, CST32110GS, CST35129AS, CST35133AS, CST35223AS, CST41100GS, 83523708, 0986025710, 114885, 220118, 8000264, DRS0047, DRS0047N, J5210302, J5210306, 8EA012526731
| Power horsepower : | 12v 0.9KW |
| Number of feet : | 8T |
| Size : | 24*12*16single unit inner box |
| Weight : | net weight:2.85KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | ENGINE STARTER |
| Specification : | 12v 0.9KW |
| Number of feet : | 8T |
| Brand : | nuojin |
| Number : | OK30A-18400 |
| Quality : | new |
| Delivery time : | 10 day |





Product Attributes
| Power | 12V 0.9KW |
| Number of teeth | 8T |
| Size | 24*12*16 CM single unit inner box |
| Weight | net weight: 2.85KG (gross weight not listed on page) |
| Packaging | Neutral kraft paper packaging |
| Spot/Pre sale | Spot goods |
| Warranty | 1 year |
Product Details
| Type | Engine starter |
| Specification | 12V 0.9KW |
| Number of teeth | 8T |
| Brand | nuojin |
| Part Number | OK30A-18400 |
| Quality | new |
| Delivery time | 10 days |
Product Overview
The OK30A-18400 is a Hyundai/KIA-spec starter motor delivering 12V output at 0.9KW with an 8-tooth drive gear, engineered for Hyundai and Kia compact petrol engines. This unit, cross-numbered as KK326-18400, matches the original starting-system specification for these Korean small cars.
Fitted with reduction-gear drive design, this brand-new engine starter is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The 0.9KW rating is factory-correct for reliable cold and hot cranking of the Hyundai/KIA engine.
Key physical specs: net weight 2.85 kg, overall dimensions 240 x 120 x 160 mm, supplied inside neutral kraft inner carton. The page does not list a gross weight for this item.
The Hyundai and Kia Platform and 12V Starting System
Hyundai and Kia compact petrol vehicles use the 18400-series starter motor numbering alongside the Hyundai 36100 series and aftermarket 1098-series numbers. These Korean cars run standard 12V starting systems with a factory-spec starter motor.
It is critical to verify the drive-gear tooth count on your old starter: this unit uses an 8-tooth drive gear. Starters with a different tooth count or mounting pattern are not interchangeable with this unit. A starter with the wrong tooth count will not engage properly with the flywheel ring gear.
The 12V 0.9KW rating matches the original starting-system specification. Confirm the mounting flange pattern, terminal positions and bolt spacing against your original starter before ordering. Always cross-check the OE numbers stamped on your old unit, including the 18400 series and the 36100 series numbers, before placing an order.
Technical Specifications
| Parameter | Specification |
|---|---|
| Main part numbers | OK30A-18400, KK326-18400 |
| 18400 series | OK30A-18400, KK326-18400, OK326-18400, RK30A18400U, KB30318400, KB30318400A, KB30818400, B50518400, B67618400A |
| STD/STM/STV/STA 1098 series | STD1098RB, STM1098RB, STV9098WA, STD1098BA, STD1098KR, STM1098KR, STM1098MA, STM1098TJ, STM1098DJ, STA1098RB, JS1098 |
| Hyundai/M series | 361002X000, 361002X000R, 361002Y000, M3T24482H, M3T24482J, M3T24482K, M3T38881, M3T38882, M3T43581, M3T49381, M3T30881, M3T33281, TM000A18001, BN361002X000 |
| Other cross | CST32110GS, CST35129AS, CST35133AS, CST35223AS, CST41100GS, 83523708, 0986025710, 114885, 220118, 8000264, DRS0047, DRS0047N, J5210302, J5210306, 8EA012526731 |
| Voltage | 12V |
| Power | 0.9KW |
| Number of teeth | 8T |
| Engine | Hyundai / Kia compact petrol |
| Quality | NEW |
| Warranty | 1 year |
| Net Weight | 2.85kg |
| Dimensions | 240 x 120 x 160mm |
| Packaging | Neutral kraft box |
| Lead Time | 10 days, in stock |
Compatibility and Cross Reference
This starter motor fits Hyundai and Kia compact petrol vehicles. The page does not list specific models, so confirm your model, engine code and OE number before ordering. Do not rely solely on the brand name for fitment validation; always compare the original part number, mounting holes, gear teeth and connector configuration before ordering.
| Vehicle | Engine | Notes |
|---|---|---|
| Hyundai compact petrol | Compact petrol | Verify 12V 0.9KW 8T and OE number |
| Kia compact petrol | Compact petrol | Verify 12V 0.9KW 8T and OE number |
Multiple 18400-series, 1098-series, Hyundai/M-series and supplier OE numbers appear across production batches and regional market specifications for this same starter motor family. If your original unit bears one of the listed cross-reference numbers, OK30A-18400 serves as a direct drop-in replacement.
What to Look for in a Replacement
Follow these five verification steps before placing your order to avoid wrong-part returns:
1. Check the voltage and power label on your old starter: confirm it is rated for 12V 0.9KW. Other ratings are not interchangeable.
2. Count the drive-gear teeth: this unit uses 8T (8-tooth). Starters with a different tooth count are incompatible.
3. Confirm the platform is a Hyundai or Kia compact petrol vehicle. The page does not list specific models, so confirm your engine code before ordering.
4. Compare the mounting holes, flange pattern and connector configuration with your original starter, and match OE numbers including the 18400 series.
5. Weight cross-check: genuine matching unit weighs approximately 2.85 kg net; significant weight difference indicates wrong assembly.
Application Scenarios
Independent repair shops and Hyundai/KIA specialist garages servicing compact petrol models across Asia-Pacific, Europe, the Americas and the Middle East.
Parts counters and jobbers stocking Korean vehicle replacement starting-system components for small cars.
Vehicle owners restoring and maintaining original-spec Hyundai and Kia compact models.
Used-car export traders supplying pre-owned Korean vehicles to global secondary markets.
Cost-conscious buyers looking for a reliable new starter motor at a competitive price.
FAQ
Q: Which vehicles does this starter fit?
A: It is designed for Hyundai and Kia compact petrol vehicles. The page does not list specific models, so confirm your model, engine code and OE number before ordering.
Q: Can I fit this starter onto other Hyundai or Kia models?
A: No. Different engine families use different starter mounting patterns, drive-gear tooth counts and terminal layouts. Confirm your engine code before ordering.
Q: My old starter shows OE number KK326-18400 or 83523708, will OK30A-18400 work?
A: Yes. These numbers belong to the same starter motor family for the Hyundai/Kia platform, differing only by production revision and market specification. It serves as a direct replacement.
Q: What is the correct operation after installation?
A: The engine should crank briskly and consistently on cold and hot starts. If the starter spins but the engine does not crank, check the drive-gear engagement and ring gear condition.
Q: What is your warranty and lead-time?
A: Goods are in stock with a 10-day dispatch lead-time. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, incorrect wiring, water ingress, short circuit or physical damage.
In Practice
For technicians working on Hyundai and Kia compact platforms: Before removing the existing starter motor, confirm the engine is cold and the ignition is off, then disconnect the battery negative terminal first. Remove the battery cable from the B+ terminal of the solenoid, noting the correct orientation of each connection, and label or photograph the wiring before disconnecting.
Remove the mounting bolts supporting the starter motor and lower it from the bell-housing, taking care not to damage the flywheel ring gear or wiring. Compare the new starter against the old unit: verify mounting flange, bolt spacing, the 8-tooth drive gear and connector configuration. Clean the mounting surface, position the new starter, and tighten mounting bolts in stages to factory torque (typically 35-45 N.m). Reconnect the solenoid wiring and battery cable, ensuring terminals are clean and tight.
After installation, reconnect the battery and carry out a cranking test: the starter should engage promptly with a clean, crisp sound and no grinding or whine. Confirm the engine starts consistently on repeated attempts. Inexperienced home mechanics are recommended to entrust replacement work to a qualified auto-electric repair shop.
References
Parameters, vehicle applications and installation specifications are compiled based on Hyundai and Kia official service documentation for compact platforms, OEM starter motor technical standards (OK30A-18400, KK326-18400), Hyundai 36100-series and 18400-series starter cross-reference data, and general automotive industry standards for starter motor installation, verified against actual vehicle installation tests and after-sales maintenance experience.
About the Author
This article was written by the senior auto-electric technician team at Nuojin Auto Parts, with over 15 years of hands-on experience in automotive charging and starting systems.
Our engineers specialise in Korean and Japanese vehicle charging and starting-system diagnostics, aftermarket starter motor and alternator cross-referencing, and factory-spec electrical-system restoration for Korean, JDM, European, Asia-Pacific and American vehicle markets. Every product listing on this site is backed by real bench-tested fitment data and first-hand repair experience, not just copied from manufacturer manuals.
If you have any question about this starter motor or your vehicle's starting system, contact our technical team and we will help you confirm the correct part for your application.

