Husqvarna 450 Chain & Bar Guide
50.2cc
Specs
Pitch .325"must match bar + sprocket
Gauge .050"must match bar groove
Bar range 18"–20"cutting length range
Sprocket 7-tooth rim.325" pitch
Drive links by bar length
18"74 or 72 DL20"78 or 80 DL
Mid-range farm saw. Also sold as 450e with AutoTune. Distinct from 450 Rancher — uses 72DL/80DL chains, not 3/8".
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
Compatible Guide Bars6
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.050" gauge
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.
20"
CompatibleHusqvarna
Pixel (.325" .050")
501959320
20".325".050"78 DL7-tooth sprocket
Husqvarna OEM .325" bar for 450 Rancher. Verify part number.
CompatibleOregon
SpeedCut Pro-Lite (.325" Husqvarna)
200SDEA094
20".325".050"78 DL7-tooth sprocket
Oregon .325" aftermarket bar — Husqvarna standard mount. Verify part number.
CompatibleHusqvarna
Pixel Narrow (.325" 80DL)
HLN250-80
20".325".050"80 DL7-tooth sprocket
Husqvarna 20" .325" 80DL bar — fits 450/450 Rancher/545. Note: 80DL, not the 78DL on professional models.
Compatible Chains12
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.050" gauge chains
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.
For 20" bar – 78 drive links
CompatibleStihl
26RS3 78
3605-000-0078
.325".050"78 DLFull chisel
RS3 (Rapid Super 3)
Full chisel .325" .050" — fits 20" bar on MS261/271/291.
CompatibleStihl
26RM3 78
3636-000-0078
.325".050"78 DLSemi chisel
RM3 (Rapid Micro 3)
Semi chisel .325" .050" — stays sharp longer in dirty/frozen wood. Fits 20" bar.
CompatibleOregon
21BPX 78
21BPX078G
.325".050"78 DLSemi chisel
BPX (semi chisel low-kickback)
Oregon semi chisel .325" .050" — fits 20" bar.
CompatibleOregon
21LGX 78
21LGX078G
.325".050"78 DLFull chisel
LGX (full chisel low-kickback)
Oregon full chisel .325" .050" — fits 20" bar.
CompatibleHusqvarna
H30 78
H30-78E
.325".050"78 DLSemi chisel
H30 semi chisel
Husqvarna branded .325" .050" semi chisel — fits 20" bar.
CompatibleHusqvarna
H30 80
H30-80
.325".050"80 DLSemi chisel
H30 semi chisel
Husqvarna .325" .050" 80DL — fits 20" bar on 450/450 Rancher/545. Different drive link count from H30-78E.