§ Fitment Guide

Husqvarna 550XPG MARK II chain size & replacement chart

The Husqvarna 550XPG MARK II takes a .325" pitch, .050" / .058" 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
13"	.325"	.050" / .058"	56	21LGX056G 21LPX056G	130MLBK095 130TXLBK095 138PXLBK095 138SLBK095
15"	.325"	.050" / .058"	64	21LPX064G 21LPX064X2 J64	150MLBK095 150TXLBK095 158PXLBK095 158SLGK095 158RNBK095 158SLBK095 158VXLGK095
16"	.325"	.050" / .058"	66	20BPX066G 20LPX066X2 20LPX066G 95TXL066G H66 M66 21LPX066X2 21LPX066G J66	160MLBK095 160RNBK095 160TXLBK095 160VXLGK095 168PXLBK095 168RNBK095 168VXLGK095

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.

Compatible chains in our shop

Saw Chains

20" replacement saw chain

pitch .325 · gauge .050" · $18

Saw Chains

Morocca 2PC 20" Chainsaw Replacement Chain

pitch .325 · gauge .050" · $34

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.

Measuring a chainsaw chain's gauge with a caliper

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 550XPG MARK II, including tensioning and maintenance intervals.
Husqvarna parts diagrams (IPL) — exploded parts diagrams and OEM part numbers.

FAQ

What size chain does a Husqvarna 550XPG MARK II take?

The Husqvarna 550XPG MARK II runs a .325" pitch, .050" / .058" gauge chain. Available bar lengths: 13", 15", 16". Match the drive-link count to your bar (see the table above).

How do I know which gauge my 550XPG MARK II 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 550XPG MARK II are .050" / .058".

Can I put a longer bar on my Husqvarna 550XPG MARK II?

Oregon lists 13", 15", 16" bars for the 550XPG MARK II. Stay within this range — a longer bar than the engine is rated for cuts slowly and accelerates wear.