§ Fitment Guide
Husqvarna 525P4S chain size & replacement chart
The Husqvarna 525P4S takes a 3/8" Low Profile™ pitch, .050" gauge chain. Below: every factory bar length with its exact drive-link count, cross-referenced to Oregon part numbers, plus the OEM parts list.
Fitment matrix
| Bar length | Pitch | Gauge | Drive links | Oregon chains | Bars / combos |
|---|---|---|---|---|---|
| 10" | 3/8" Low Profile™ | .050" | 40 | 91PX040GS40X3S40-21S40 | — |
| 12" | 3/8" Low Profile™ | .050" | 45 | 91PX045G91VXL045X291VXL045GS45 | 120SXEA095120SDEA095 |
| 14" | 3/8" Low Profile™ | .050" | — | — | 140SXEA095140SDEA095 |
| 16" | 3/8" Low Profile™ | .050" | — | — | 160SXEA095160SDEA095 |
| 18" | 3/8" Low Profile™ | .050" | — | — | 180SDEA095 |
Source: Oregon part-finder, retrieved 2026-07-06. Part numbers link to the manufacturer's spec page. Always confirm drive-link count against your current chain before ordering.
How to confirm the fit
- Read your bar. The pitch and gauge are stamped on the guide bar near the saw body — e.g.
3/8" LP .050". - Count drive links. Lay the old chain flat and count the teeth that ride inside the bar groove. This number must match exactly; length in inches is not enough.
- Match all three. Pitch, gauge and drive-link count all have to agree with a row in the table above. Two of three is not a fit.
Watch: how to identify chain pitch and gauge
Oregon Products: Identifying Chain Pitch and Chain Gauge Official video from Oregon Products, the manufacturer behind the cross-reference part numbers above.
Official Husqvarna resources
- Husqvarna manuals & downloads — owner's manual for the 525P4S, including tensioning and maintenance intervals.
- Husqvarna parts diagrams (IPL) — exploded parts diagrams and OEM part numbers.
FAQ
What size chain does a Husqvarna 525P4S take?
The Husqvarna 525P4S runs a 3/8" Low Profile™ pitch, .050" gauge chain. Available bar lengths: 10", 12", 14", 16", 18". Match the drive-link count to your bar (see the table above).
How do I know which gauge my 525P4S chain is?
Check the number stamped on your guide bar near the tail, or measure the drive-link thickness with calipers. Common gauges for the 525P4S are .050".
Can I put a longer bar on my Husqvarna 525P4S?
Oregon lists 10", 12", 14", 16", 18" bars for the 525P4S. Stay within this range — a longer bar than the engine is rated for cuts slowly and accelerates wear.