1 / 2Cast Web Drive Sprocket 6T
Part no. 639274
In stockAftermarket cast web drive sprocket, 6 tooth, 1-5/8″ ID with a 1/4″ keyway.
No card charged online — we confirm first.
- 12-month warranty on our aftermarket parts, with the manufacturer's warranty behind it.
- Ships in one business day when it is on the shelf.
- Not sure it fits? Call (717) 354-8000 with the model and serial number.
Fits these models
- 790
- 791
Replaces #part, #d.
About this part
Aftermarket cast web drive sprocket, 6 tooth, 1-5/8″ ID with a 1/4″ keyway.
- Replaces part # 181789 but must be replaced in a set (the key way is in between the teeth on this part)
- Part is powder coated red or black
Fits these models
- 790
- 791
Cross reference
Replaces #part, #d.
Filed under

A parts specialist checks fitment before anything ships.
Specifications
| Part number | 639274 |
|---|---|
| Brand | New Holland |
| Machine | New Holland Manure Spreaders |
| Weight | 3 lbs |
| Dimensions | 6 × 6 × 6 in |
| Replaces | #part, #d |
| Replaced by | — |
| Warranty | 12 months |
| Availability | In stock |

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New Holland Manure Spreaders
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Fitment & care
Questions people ask.
833 part numbers in the catalog. If yours is not here, we can probably still get it.
Call (717) 354-8000Does 639274 fit my machine?
It is listed for New Holland Manure Spreaders: 790, 791. If your model is not listed, call the parts desk with the serial number and we will check.
When will it ship?
In-stock orders leave the shop no later than the next business day. Transit is usually 1–5 days in the United States.
What does the warranty cover?
Our aftermarket parts carry a 12-month warranty against defects in materials and workmanship, with the manufacturer's warranty behind it. Labor, freight and damage from wear or misuse are not covered.
Can I return it?
Stock parts in original condition can be returned within 30 days. After 30 days, or on special-order parts, a 20% restock fee applies if the manufacturer accepts the return. Call before you ship anything back.



