Thermo King Starter Motor 45-2177 Yanmar 482 486 Engine 12V 9 Tooth S13-407
Thermo King Starter Motor 45-2177 Yanmar 482 486 Engine 12V 9 Tooth S13-407
SKU:410-44147
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Thermo King Starter Motor - 45-2177
Reliable Performance & Precise Fitment for Yanmar Diesel Engines
This heavy-duty starter motor is a direct replacement for Thermo King refrigeration units powered by Yanmar 482 (TK 4.82) and Yanmar 486 (TK 4.86) diesel engines. Engineered to meet or exceed OEM specifications, this unit provides reliable cranking power in demanding transport refrigeration environments.
Designed with an Offset Gear Reduction (OSGR) system, this starter delivers high torque output (approx. 2.0kW - 2.2kW) to ensure consistent cold starts for critical cold-chain equipment. It is fully compatible with popular Thermo King series including the SB-200, SB-210, SB-300, and SL series (SL-100, SL-200, SL-400).
Verified Technical Data
| Voltage | 12 Volts |
| Power Output | 2.0kW - 2.2kW |
| Teeth | 9 |
| Rotation | Clockwise (CW) |
| Design | OSGR (Offset Gear Reduction) |
| Mounting Holes | 2 x Unthreaded (13mm ID) |
| Pinion Diameter | 35mm - 36mm (Approx.) |
OEM Cross Reference
| Brand | Part Number |
|---|---|
| Thermo King | 45-2177, 45-2324, 845-2177, 845-2324, 10-45-1688, 45-1688 |
| Hitachi | S13-407, S13-407A, S13-207, S13-207A |
| Yanmar | 129685-77011, 126486-77010, 126486-77011 |
| Wood Auto | STR72213 |
| Lucas | LRS02763 |
Vehicle Compatibility
| Equipment Make | Models / Series | Engine Type |
|---|---|---|
| Thermo King | SB-200, SB-210, SB-300, SB-310 | Yanmar 486 (TK 4.86) |
| Thermo King | SL-100, SL-200, SL-300, SL-400 | Yanmar 482 / 486 (TK 4.82/4.86) |
| Thermo King | SB-II SR, SB-III SR, Super II TC | Yanmar 486 (TK 4.86) |
| Thermo King | Spectrum SB, Spectrum SL | Yanmar 486 (TK 4.86) |
Questions & Answers
How do I verify if this starter is correct for my Thermo King unit?
The most accurate method is to check the part number on your existing starter motor. If it matches 45-2177, 845-2177, or Hitachi S13-407/A, this is the correct replacement. You can also check your engine tag; this starter is specifically for Yanmar 482 and 486 diesel engines.
Does this starter have a 9-tooth or 15-tooth pinion?
This specific unit (45-2177) is a 9-tooth starter. Some rebuilt versions or alternative gear reduction designs may use different tooth counts, but this new OSGR unit is designed with a 9-tooth pinion to mesh correctly with the Yanmar flywheel ring gear.
Is this a direct fit for the SB-210?
Yes, the SB-210 typically runs the Yanmar 486 engine, which uses this starter configuration. Always verify the cross-reference numbers to be certain.
Please double-check your original part number against the cross-references provided to ensure a correct fit.
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