Chain
Oregon S56
4 associated model records
The Oregon S56 is listed as an aftermarket chain in 4 model records across 2 brands. Those records reference OEM part number 581562201. Associated equipment records include Husqvarna 120, Husqvarna 130, Husqvarna 135, Poulan Pro P3816. 1 record includes an assigned confidence, source type, and review date.
Amazon Buying Check
Use the Amazon listing to compare kit contents, seller details, shipping, and OEM compatibility notes before ordering.
Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.
Model Records
| Brand | Model | OEM # | Confidence | Source | Reviewed | Evidence | |
|---|---|---|---|---|---|---|---|
| Husqvarna | 120 | Spec-based | Low | Inferred | 2026-05-21 | 16 inch, 3/8 inch LP pitch, .050 inch gauge, 56 drive links | Chainsaw |
| Husqvarna | 130 | Spec-based | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 16", 3/8" LP pitch, .050" gauge, 56 drive links | Chainsaw |
| Husqvarna | 135 | Spec-based | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 16", 3/8" LP pitch, .050" gauge, 56 drive links | Chainsaw |
| Poulan Pro | P3816 | 581562201 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 16", 3/8" LP pitch, .050" gauge, 56 drive links | Chainsaw |
What this part is
Oregon S56 is listed here as a chain replacement option. Use this page as a fitment cross-reference, then confirm the removed part, model plate, and seller listing details before buying.
OEM numbers it replaces
581562201
Alternate spellings
S56 is the normalized part number used on this site.
Known exclusions
- No specific exclusion is listed in the current data. Still verify serial range, production variant, and removed-part details before ordering.
Dimensions and specs
- 16 inch, 3/8 inch LP pitch, .050 inch gauge, 56 drive links
- 16", 3/8" LP pitch, .050" gauge, 56 drive links
Symptoms that suggest replacement
- Cuts slowly
- Chain will not tension correctly
- Wrong drive-link count
- Mismatch with bar stamp
How to verify before buying
- Confirm your equipment is one of the compatible models listed above.
- Match the OEM number, stamped part number, or physical spec against the removed part.
- Read the model-specific evidence, confidence, source, reviewed date, dimensions, notes, and exclusions before opening an Amazon listing.
Common wrong-fit mistakes
- Ordering from a broad model-family listing without checking the exact equipment model.
- Ignoring the old OEM number, stamped part number, or physical dimensions.
- Matching bar length while missing pitch, gauge, and drive-link count.
Related model and part pages
Amazon buying cautions
- Check that the Amazon listing includes the exact part number or verified cross-reference shown here.
- Compare kit contents, gaskets, fuel lines, bulbs, plugs, filters, and dimensions against the removed part before checkout.
- A listing title can mention the right model and still include the wrong revision, accessory, or generic substitute.