OEM / REF: 321-8928SKU: pilotpart425732
New 12V 120A Alternator 8600376 321-8928 3218928 For Caterpillar TH357D TH407C TH336 TL642D is a Alternator replacement part indexed for CAT TH366C and CAT TL943D, with 3 application records on file. Match OEM part number 321-8928 and confirm fitment for Caterpillar Engine Spare Parts before ordering.
This Alternator is indexed for CAT TH366C; CAT TL943D; CAT TH3510D; CAT TH357D. Compare reference number 321-8928 against the label on your existing Caterpillar component before ordering.
Additional cross references on file: 8600376. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.
| Unit Type | DELCO |
|---|---|
| Voltage | 12V |
| Amperage | 120A |
| Fan | INTERNAL |
| Regulator | INTERNAL |
| Grooves | 8 |
| Pulley Shaft Od | 0.669IN / 17MM |
| Shaft Threads | M16-1.5 |
| Mount Type | PAD |
| Mounting Ear 1 & 3 Hole | 10.6MM UNTHREADED |
| Mounting Ear 2 & 4 Hole | 12.6MM UNTHREADED |
| Mounting Ear Thickness | 3.15IN / 80MM |
| B+ Terminal | M6 |
| L Terminal | M5 |
| W Terminal | M5 |
| Polarity | NEGATIVE |
| Part Number (CATERPILLAR) | 321-8928, 3218928 |
| Part Number (DELCO) | 8600376 |
| Part Number | CATERPILLAR: 321-8928, 3218928 DELCO: 8600376 |
Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.
Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.
Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.
