Bar
CompatibleHusqvarna
Pixel (.325" .050")
501959318
18".325".050"74 DL
Husqvarna 543XP Chain & Bar Guide
43.6cc
Husqvarna 543XP← Change saw
Specs
Pitch .325"must match bar + sprocket
Gauge .050", .058"must match bar groove
Bar range 16"–18"cutting length range
Sprocket 7-tooth rim.325" pitch
Drive links by bar length
16"66 DL18"74 or 72 DL
Discontinued professional lightweight saw. Predecessor to 545. Uses .325" pitch.
Wrong pitch, gauge, or drive link count can throw a chain or damage your saw. Check your saw's markings before ordering. More info
Source: Husqvarna service manual; Oregon cross-reference guideLast verified: 2026-04-21
Common setup
A typical Husqvarna 543XP setup
For general firewood: 18" Husqvarna Pixel (.325" .050") bar with Husqvarna H30 66 semi-chisel chain. Both match this saw's pitch, gauge, and drive-link count.
Chain
CompatibleHusqvarna
H30 66
H30-66E
.325".050"66 DL
For dirty wood, hardwood cutting, milling, or different bar lengths, see the full list below.
All compatible guide bars5
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.050" gauge
16"
CompatibleHusqvarna
Pixel (.325" .050")
501959316
16".325".050"66 DL7-tooth sprocket
Husqvarna OEM .325" bar for 450 Rancher. Verify part number.
CompatibleOregon
SpeedCut Pro-Lite (.325" Husqvarna)
160SDEA094
16".325".050"66 DL7-tooth sprocket
Oregon .325" aftermarket bar — Husqvarna standard mount. Verify part number.
18"
CompatibleHusqvarna
Pixel (.325" .050")
501959318
18".325".050"74 DL7-tooth sprocket
Husqvarna OEM .325" bar for 450 Rancher. Verify part number.
CompatibleOregon
SpeedCut Pro-Lite (.325" Husqvarna)
180SDEA094
18".325".050"74 DL7-tooth sprocket
Oregon .325" aftermarket bar — Husqvarna standard mount. Verify part number.
CompatibleHusqvarna
Pixel Narrow (.325" 72DL)
HLN250-72
18".325".050"72 DL7-tooth sprocket
Husqvarna 18" .325" 72DL bar — fits 440/445/450/545. Note: 72DL, not the 74DL on professional models.
All compatible chains13
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.050" gauge chains
For 16" bar – 66 drive links
CompatibleStihl
26RS3 66
3605-000-0066
.325".050"66 DLFull chisel
RS3 (Rapid Super 3)
Full chisel .325" .050" — fits 16" bar on MS251/261/271/291 and Husqvarna 450.
CompatibleStihl
26RM3 66
3636-000-0066
.325".050"66 DLSemi chisel
RM3 (Rapid Micro 3)
Semi chisel .325" .050" — stays sharp longer in dirty/frozen wood. Fits 16" bar.
CompatibleOregon
21BPX 66
21BPX066G
.325".050"66 DLSemi chisel
BPX (semi chisel low-kickback)
Oregon semi chisel .325" .050" — fits 16" bar on MS261/271/291 and Husqvarna 450.
CompatibleOregon
21LGX 66
21LGX066G
.325".050"66 DLFull chisel
LGX (full chisel low-kickback)
Oregon full chisel .325" .050" — fast cut for clean wood. Fits 16" bar.
CompatibleHusqvarna
H30 66
H30-66E
.325".050"66 DLSemi chisel
H30 semi chisel
Husqvarna branded .325" .050" semi chisel — fits 16" bar on 450 Rancher and Stihl .325" saws.
For 18" bar – 74 drive links
CompatibleStihl
26RS3 74
3605-000-0074
.325".050"74 DLFull chisel
RS3 (Rapid Super 3)
Full chisel .325" .050" — fits 18" bar on MS261/271/291.
CompatibleStihl
26RM3 74
3636-000-0074
.325".050"74 DLSemi chisel
RM3 (Rapid Micro 3)
Semi chisel .325" .050" — stays sharp longer in dirty/frozen wood. Fits 18" bar.
CompatibleOregon
21BPX 74
21BPX074G
.325".050"74 DLSemi chisel
BPX (semi chisel low-kickback)
Oregon semi chisel .325" .050" — fits 18" bar.
CompatibleOregon
21LGX 74
21LGX074G
.325".050"74 DLFull chisel
LGX (full chisel low-kickback)
Oregon full chisel .325" .050" — fits 18" bar.
CompatibleHusqvarna
H30 74
H30-74E
.325".050"74 DLSemi chisel
H30 semi chisel
Husqvarna branded .325" .050" semi chisel — fits 18" bar.
CompatibleHusqvarna
H30 72
H30-72
.325".050"72 DLSemi chisel
H30 semi chisel
Husqvarna .325" .050" 72DL — fits 18" bar on 440/445/450/545. Different drive link count from H30-74E.
.058" gauge chains
For 16" bar – 66 drive links
CompatibleHusqvarna
H25 66
H25-66
.325".058"66 DLSemi chisel
H25 semi chisel
Husqvarna .325" .058" semi chisel — fits 16" bar on 543XP/545/550XP.
For 18" bar – 72 drive links
CompatibleHusqvarna
H25 72
H25-72
.325".058"72 DLSemi chisel
H25 semi chisel
Husqvarna .325" .058" semi chisel — fits 18" bar on 543XP/545/550XP.