Description
The Delco Remy 8200977 is a 38MT+ starter motor that replaces PACCAR D61-1012, D61-6002-011, and Mitsubishi M009T72578 on Kenworth T680/T880/W900S and Peterbilt 579/567 trucks. Genuine Delco Remy OEM new 12V unit features electrical soft-start technology to prevent ring-gear damage and an integral magnetic switch (IMS) to reduce voltage drop for reliable cold-weather cranking on PACCAR MX-13 12.9L and MX-11 10.8L engines.
Signs You Need a New Starter
- Slow or sluggish cranking, especially in cold weather
- Clicking sound when turning the key with no engine turnover
- Intermittent starting failures or no response from the starter
- Grinding noise during engine start indicating worn pinion gear
- Starter continues running after engine starts (solenoid failure)
- Visible damage, corrosion, or oil contamination on starter housing
Specifications
| Manufacturer | Delco Remy (BorgWarner) |
|---|---|
| Part Number | 8200977 |
| Model | 38MT+ |
| Condition | New |
| Voltage | 12V |
| Mounting Type | SAE 3 |
| Pinion Teeth | 12 |
| Pinion Pitch | Mod 3.0 |
| Solenoid Position | 68° |
| Rotation | Clockwise (CW) |
| Polarity | Grounded |
| Over Crank Protection | No (see 8201084 for OCP version) |
| Engine Compatibility | PACCAR MX-13 12.9L, PACCAR MX-11 10.8L |
Cross References
This part replaces or is equivalent to the following part numbers:
- PACCAR: D61-1012, D61-6002-011, D61-1003-001, D61-1006-001, PC0079
- Delco Remy: 8201115
- Mitsubishi: M009T72578, M009TA0079, 1847916, 1924505, 1974717, PC2578
- Leece Neville / Prestolite: M110608
- Wilson: 91-01-4805
- Dixie Electric: 20138106
Applications
This starter fits the following heavy-duty diesel engines:
- PACCAR MX-13 12.9L (2010–present)
- PACCAR MX-11 10.8L (2016–present)
Representative vehicles using these engines:
- Kenworth T680 (2013–present)
- Kenworth T880 (2013–present)
- Kenworth T800 with FEPTO
- Kenworth W900S
- Peterbilt 579 (2013–present)
- Peterbilt 567 (2014–present)
For the over-crank-protection (OCP) version, see Delco Remy 8201084.
Verify your engine serial number and configuration before ordering to confirm fitment.









