Stihl MS391 chain size

Chainsaw drawing: the bar and chain are the parts this page is about

The chain for your Stihl MS391

Which bar is on your saw?

Which chain is on it now?

Which chain is on it now?

Which chain is on it now?

16" bar

Pitch
3/8"
Gauge
.050"
Drive links
60
  • Oregon D60
  • Same as Stihl 33RS3, Husqvarna H80
  • File 7/32"

16" bar

Pitch
.325"
Gauge
.063"
Drive links
67
  • Oregon L67
  • Same as Stihl 26RM3
  • File 3/16"

18" bar

Pitch
3/8"
Gauge
.050"
Drive links
66
  • Oregon D66
  • Same as Stihl 33RS3, Husqvarna H80
  • File 7/32"

18" bar

Pitch
.325"
Gauge
.063"
Drive links
74
  • Oregon L74
  • Same as Stihl 26RM3
  • File 3/16"

20" bar

Pitch
3/8"
Gauge
.050"
Drive links
72
  • Oregon D72
  • Same as Stihl 33RS3, Husqvarna H80
  • File 7/32"

20" bar

Pitch
.325"
Gauge
.063"
Drive links
81
  • Oregon L81
  • Same as Stihl 26RM3
  • File 3/16"

Bar mount D025

Buy this chain

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Check pitch, gauge and drive links on the listing before you order. How this works

All bar lengths for the Stihl MS391
Chain for each bar length
BarPitchGaugeDrive linksChain
16"3/8".050"60D60
16".325".063"67L67
18"3/8".050"66D66
18".325".063"74L74
20"3/8".050"72D72
20".325".063"81L81

The Stihl MS391 chain depends on the bar. 16" bar: 3/8", .050", 60 drive links; 16" bar: .325", .063", 67 drive links; 18" bar: 3/8", .050", 66 drive links; 18" bar: .325", .063", 74 drive links; 20" bar: 3/8", .050", 72 drive links; 20" bar: .325", .063", 81 drive links.

Stihl genuine part numbers

If you prefer the maker's own parts, these are the numbers to ask for at a dealer.

Stihl bar and chain part numbers
BarChain part no.Bar part no.Pitch / gaugeDrive links
16"33 RS3 603003 008 89133/8" / .050"60
18"33 RS3 663003 008 89173/8" / .050"66
20"33 RS3 723003 008 89213/8" / .050"72

Check the chain on your saw

Drawing: pitch is the distance between three rivets divided by two
Pitch Measure across three rivets and divide by two. Common pitches are 1/4", .325", 3/8" and .404".
Drawing: gauge is the thickness of the drive link in the bar groove
Gauge The thickness of the drive link that rides in the bar groove: .043", .050", .058" or .063".
Drawing: count the drive links, the tabs under the chain
Drive links Lay the chain flat and count the tabs underneath. Mark one with a paint pen so you know where you started.
Find pitch and gauge from the number on a drive link
Type the number on a drive link
See all stamp numbers
Drive link stamp number to pitch and gauge
StampPitchGauge
113/4".122"
16.404".063"
18.404".080"
20.325".050"
21.325".058"
22.325".063"
251/4".050"
26.404".058"
27.404".063"
33.325".050"
34.325".058"
35.325".063"
50.404".050"
51.404".058"
52.404".063"
58.404".058"
59.404".063"
68.404".063"
723/8".050"
733/8".058"
753/8".063"
80.325" LP.043"
903/8" LP.043"
913/8" LP.050"
95.325".050"

Questions people ask

What size chain does a Stihl MS391 take?

The Stihl MS391 chain depends on the bar. 16" bar: 3/8", .050", 60 drive links; 16" bar: .325", .063", 67 drive links; 18" bar: 3/8", .050", 66 drive links; 18" bar: .325", .063", 74 drive links; 20" bar: 3/8", .050", 72 drive links; 20" bar: .325", .063", 81 drive links.

How many drive links is a Stihl MS391 chain?

It depends on the bar: 60 on a 16" bar, 67 on a 16" bar, 66 on a 18" bar, 74 on a 18" bar, 72 on a 20" bar, 81 on a 20" bar. The bar length is usually printed near the mount.

What bar fits a Stihl MS391?

A bar with the D025 mount, in one of these lengths: 16", 18", 20".

Other saws with the same chain

All saws that take D60 All saws that take L67 All saws that take D66

Related Stihl saws

Every Stihl model