Description
Genuine Delco Remy 8600889 24SI alternator — 12V, 160 amp output with quad pad mount and dual internal fan (DIF) cooling — for Class 8 over-the-road and vocational trucks. Brush-style design delivers 100 A at idle and 160 A at road speed; field-serviceable brush set keeps the unit on the truck longer than brushless competitors. Replaces International 3701568C91 and Delco Remy 8600066/8600229.
Signs You Need a New Alternator
- Dimming headlights or interior lights, especially at idle
- Battery warning light on dash, or batteries failing to hold charge
- Whining or grinding noise from the alternator
- Voltage gauge below 13 V with engine running and accessories on
- Burnt smell from belt area or alternator case
Specifications
| Manufacturer | Delco Remy |
|---|---|
| Part Number | 8600889 |
| Condition | New |
| Model | 24SI |
| Voltage | 12 V |
| Rated Output | 160 A |
| Output at Idle | 100 A |
| Mount Type | Quad Pad |
| Cooling | Dual Internal Fan (DIF) |
| Design | Brush-Style |
| B+ Output Terminal | 5/16 in |
| R Terminal | 10 |
| I Terminal | 10 |
| Remote Sense | No |
| Ground | Negative |
| Weight | 19.47 lb |
Cross References
This alternator replaces or is equivalent to the following part numbers:
- Delco Remy: 8600066, 8600229, 8600402, 8700013, 8700014, 8700015, 19020387, 19020388, 19020803, 19020889
- International / Navistar: 3582185C91, 3582185C92, 3586537C91, 3667912C91, 3667912C92, 3700150C91, 3700150C93, 3701568C91, 3701568C92, 4024553C91
- Paccar: D27-1006-0160P, D27-6006-00001
- Volvo: 21175415
- Leece-Neville: 110-565, 110-566P, 110-916, LBP2180GH
- Wilson: 90-01-4447, 90-01-4450, 90-01-4577N
- PAI: MAL-1408
Applications
This pad-mount alternator fits Class 8 trucks built around the following heavy-duty diesel engine families:
- Detroit Diesel DD13, DD15, DD16; Series 60
- Cummins ISX, ISX15, ISM, ISL
- Caterpillar C13, C15
- Mack MP7, MP8
- Volvo D11, D13, D16
- Paccar MX-13, MX-11
- Mercedes-Benz MBE4000, MBE900
- Navistar MaxxForce 11, 13
Representative vehicles using these engines:
- Freightliner Cascadia, Century Class, Columbia, Coronado, Business Class M2
- International ProStar, LoneStar, 4300, 4400, 9400
- Kenworth T600, T660, T680, T800, T880, W900
- Peterbilt 365, 367, 379, 384, 386, 388, 389
- Mack Granite, Pinnacle, Vision, CH
- Volvo VNL, VNM, VHD, VNX
- Western Star 4900, 5700XE
- Blue Bird and Gillig transit buses
Need J180 hinge mount instead? See Delco Remy 8600310. Need higher output or brushless? Consider the Delco Remy 8600127 36SI 170 A brushless alternator.
Verify your current alternator mounting style (pad mount vs. hinge / J180), pulley, and electrical configuration before ordering to confirm fitment.
