§ Fitment Guide

Stihl MS 291 chain size & replacement chart

The Stihl MS 291 takes a .325" or 3/8" pitch, .050" / .063" 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
15"	.325" or 3/8"	.050" / .063"	—	—	153VXLGD025 153RNDD025 153VXLHD025
16"	.325" or 3/8"	.050" / .063"	67	20LPX067X2 20LPX067G 22BPX067G 22LGX067G 22LPX067X2 22LPX067G V67 72EXL060X2 72TXL060G 72EXL060G 72LPX060G	160VXLGD025 163SFGD025 163RNBD025 163VXLGD025 160RNDD025 160VXLHD025 163SFHD025 163ATMD025 163RNDD025 163VXLHD025
18"	.325" or 3/8"	.050" / .063"	74	20LGX074G 20LPX074X2 20LPX074G 22BPX074G 22LGX074G 22LPX074X2 22LPX074G V74 72EXL066X2 72TXL066G 72EXL066G 72LPX066G	180VXLGD025 183SFGD025 183RNBD025 183VXLGD025 180ATMD025 180RNDD025 180VXLHD025 183SFHD025 183ATMD025 183RNDD025 183SLHD025 183VXLHD025 579776
20"	.325" or 3/8"	.050" / .063"	81, 72	20LGX081G 20LPX081G 20LPX081X2 22BPX081G 22LGX081G 22LPX081X2 22LPX081G V81X3 V81 72V072G 72EXJ072G 72EXL072X2 72TXL072G 72TXL072X2 72CJ072G 72EXL072G 72LPX072G 72LPX072X2 72DPX072G 75TXL072G 75EXL072G 75EXJ072G	203VXLGD025 200ATMD025 200RNDD025 200VXLHD025 203SFHD025 203ATMD025 203RNDD025 203SLHD025 203VXLHD025 580123
22"	3/8"	.063"	—	—	223RNDD025
24"	3/8"	.050" / .063"	—	72EXL084X2 72TXL084G 72TXL084X2 72CJ084G 72EXJ084G 72EXL084G 72LPX084G 72LPX084X2 72DPX084G 75EXL084G	240ATMD025 240RNDD025 243SFHD025 243ATMD025 243RNDD025
28"	3/8"	.063"	—	—	283RNDD025
34"	3/8"	.063"	—	—	—
36"	3/8"	.063"	—	—	363RNDD025
42"	3/8"	.063"	—	—	423RNDD025

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

18 Inch Chainsaw Chain

pitch 3/8 · gauge .050" · $19

Saw Chains

18 Inch Chainsaw Chain

pitch 3/8 · gauge .063" · $22

Saw Chains

1PC 20 Inch Replacement Chain

pitch 3/8 · gauge .050" · $25

Saw Chains

1PC 24'' inch Chainsaw Saw Chain

pitch 3/8 · gauge .050" · $22

Saw Chains

20 in. Chainsaw Chain - 70 Link

pitch 3/8 · gauge .050" · $14

Saw Chains

20 Inch Chainsaw Chain

pitch 3/8 · gauge .050" · $23

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 Stihl resources

STIHL owner's manuals — owner's manual for the MS 291, including tensioning and maintenance intervals.

FAQ

What size chain does a Stihl MS 291 take?

The Stihl MS 291 runs a .325" or 3/8" pitch, .050" / .063" gauge chain. Available bar lengths: 15", 16", 18", 20", 22", 24", 28", 34", 36", 42". Match the drive-link count to your bar (see the table above).

How do I know which gauge my MS 291 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 MS 291 are .050" / .063", .063".

Can I put a longer bar on my Stihl MS 291?

Oregon lists 15", 16", 18", 20", 22", 24", 28", 34", 36", 42" bars for the MS 291. Stay within this range — a longer bar than the engine is rated for cuts slowly and accelerates wear.