ISUZU 24V 7.5kW Iron Starter Motor with 12-Tooth Gear for CXZ81K 10PE1 10PC1 — OEM 1-81100313-2
| Voltage: | 24V | Rotation Direction: | Clockwise (CW) |
| Mounting Diameter: | 105mm | Gear Outer Diameter: | 42.3mm |
| Power: | 7.5kW | Mounting Holes: | 3 Holes |
| Gear Throw: | 31mm | Teeth: | 12 Teeth |
| High Light: | 24V Starter Motor,7.5kW Iron Starter,12-Tooth Gear Starter Motor Assembly |
||
The ISUZU Iron Starter Motor with OEM numbers 1-81100313-2 / 1811003132 is a heavy-duty replacement designed for ISUZU CXZ81K series trucks, compatible with 10PE1 and 10PC1 large diesel engines. This component converts electrical energy from the battery into mechanical energy to rotate the engine flywheel for engine startup.
The starter motor is mounted on the engine flywheel housing and engages with the flywheel ring gear:
- Solenoid Switch Energized: Battery current is sent to the starter solenoid when key is turned to "START" position
- Gear Engagement: Solenoid pushes the starter drive gear outward to engage with flywheel ring gear
- Motor Rotation: High current flows into starter motor, generating torque to rotate flywheel
- Engine Start: Rotating flywheel turns crankshaft, initiating four-stroke cycle
- Automatic Disengagement: Drive gear retracts from flywheel ring gear when engine starts
| Symptom | Probable Cause |
|---|---|
| No response from starter when key is turned | Burnt solenoid contacts, worn brushes, or open circuit in motor |
| Starter cranks slowly; engine fails to start | Weak battery, worn brushes, or shorted motor windings |
| Starter spins freely but engine does not turn | Worn drive gear or flywheel ring gear; failed engagement |
| Loud metallic grinding noise during startup | Poor engagement or worn gears |
| Starter continues running after key is released | Sticking solenoid contacts |
| Part Number | 1-81100313-2 1811003132 |
| Product Name | Iron Starter |
| Car Model | CXZ81K |
| Engine Model | 10PC1 10PE1 |
| Voltage/Power | 24V with 7.5kW output |
| Gear Specification | 12-tooth drive gear |
| Rotation Direction | Clockwise (CW) |
| Mounting Dimensions | Mounting diameter 105mm, gear outer diameter 42.3mm, gear throw 31mm, mounting holes 3 |
| Condition | 100% Brand New |
| Material | High-strength aluminum alloy & precision bearings |
| Type | Number |
|---|---|
| ISUZU OEM | 1-81100313-2 / 1811003132 |
| Associated Number | 8942792090 |
| Same Series Numbers | 1811002453, 1811003450, 1811003451, 1811003452, 1811003453 |
| Mitsubishi Reference | M9T80871, M009T80871 |
| Alternative Brands | KRAUF STM3992MA, STM3992NB, STM3992NL, STM3992WD, STM3992ZL |
- Verify the specific number on the original part before ordering
- Check battery voltage (24V system), starter relay, ignition switch, and wiring connections before replacement
- Refer to ISUZU factory workshop manual for starter mounting bolt torque specifications
- Professional installation is strongly recommended due to high-voltage electrical systems
| Packaging | Neutral packaging or customized per customer request |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Minimum Order Quantity | 5 pieces |
| Delivery Time | 5–8 working days |
| Warranty | 1 year |
| Target Customers | Truck parts wholesalers, heavy-duty truck repair shops, fleet purchasers, export traders |