1081
Spur Sprocket
Power Mate® System
Small 7 (SM7)
Standard 7 (SD7)
Crankshaft Diameter
Drive Teeth
Rim
OEM
Chainsaw Model
Pitch
STIHL 021 023
1/4"
9 6 7 7 7 9 6 7 7 7 7 7 7
543767
0.394"
3/8" (91)
100962XF
1123-640-2000 1123-007-1003 1121-640-2003 1121-007-1001
.325" .325"
106657X 100961XSF
11892C 11892C 11892C 543767 11892C 11892C 11892C 11892C 18720C 18720C
024 (before S/N X25809074)
38076X
0.394"
024 (after S/N X25809074)
.325"
100876X 100791XSF
0.394" 0.394"
025
1/4"
3/8" (91)
100962XF
1123-640-2000 1123-007-1003 1121-007-1001 1121-640-2003 1121-007-1001 1118-007-1004 1118-007-1007 1125-640-2000 1125-007-1002 1113-640-2000 1110-007-1040
.325" .325" .325"
106657X 100961XSF 100876X 100791XSF
026 (after S/N X25809074) 026 (before S/N X25809074)
0.394" 0.394"
38076X
028 028 Super
.325"
30384X 29917X 34162X
0.394"
3/8" 3/8"
029
38145X
0.394"
030 031 032
3/8"
7
32060X
68210C
0.472"
034 034 Super 036
3/8"
7
38145XF
34162X
18720C
1125-640-2000 1125-007-1002
0.394"
038 038 Super Magnum
3/8"
7
509604X
68210C
1119-642-2000
0.472"
039
3/8"
7
38145XF
34162X
18720C
1125-640-2000 1125-007-1002 1113-640-2000 1110-007-1040 1110-007-1017 1128-640-2000 1128-007-1000 1115-640-2001 1128-640-2000 1128-007-1000 1111-640-2026 1116-640-2002 1111-640-2025 1115-640-2001 1122-007-1001 1122-007-1002 1106-640-2011 1111-640-2026 1116-640-2002 1111-640-2025
0.394"
041 (after S/N 5664891)
3/8"
7
32060X
68210C
0.472"
041 (before S/N 5664891)
3/8" 3/8" 3/8" 3/8"
7 7 7 7 8 7 7 7 7 7 8 7
68210C 68210C
0.472" 0.394" 0.551" 0.394"
044
38470XSF
045 046
32063X
38470XSF
68210C
050 051
3/8"
22273C 22270C
0.551"
.404"
056S (before S/N 1093560)
3/8" 3/8"
32063X
0.551" 0.394"
064 066 066 Magnum
35464X 35460X
68210C 22270C 22270C 22273C 22270C
.404"
070 075 076
.404"
32669XF
0.591" 0.551"
3/8"
.404"
MS170 MS171 MS180C MS181 MS181C MS210C MS211 MS211C
1/4"
9
543767
0.394"
3/8" (91)
6
100962XF
1123-640-2000
MS 200T MS 201T MS 201C-E
3/8" (91)
6
28016X
1129-640-2000
0.394"
MS 210 MS 230
1/4"
9 6 7 9 6 7
543767
0.394"
3/8" (91)
100962XF
1123-640-2000 1123-007-1003
.325"
106657X 100961XSF
11892C 543767
MS 250 MS 250C
1/4"
0.394"
3/8" (91)
100962XF
1123-640-2000 1123-007-1003
.325"
106657X 100961XSF
11892C
Part numbers listed in red are obsolete. Contact your authorized Oregon distributor for availability.
2025
TechnicalServices@OregonProducts.com 1.800.223.5168
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