• UDT Chainsaw Parts UCS-40 Piston Ring
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UDT Chainsaw Parts UCS-40 Piston Ring

UDT Chainsaw Parts UCS-40 Piston Ring

UDT Chainsaw Parts UCS-40 Piston Ring is a replacement engine component designed to maintain cylinder compression and oil control in chainsaw powerheads, sourced direct from Korea.

Key features

  • Piston rings of this type are essential wear items in two-stroke chainsaw engines, typically replaced during top-end rebuilds to restore power, reduce blow-by, and extend engine service life
500-9185 MPN: UCS-40 | UCS-40 #A10
500-9194 MPN: UCS-40 | UCS-40 #A13 (Piston)
500-9219 MPN: UCS-40 | For UCS-40 #A15
500-9246 MPN: UCS-40 | UCS-40 #B05
500-9255 UCS-40 (#B09), UCS-42 | Part Name: Carburetor | Compatible Model: UCS40 (B09)/UCS42/UCS440
500-9264 MPN: UCS-40 | #B15 for UCS-40
500-9273 MPN: UCS-40 | UCS-40,42 #B18
500-9282 MPN: UCS-40 | UCS-40 #B19
500-9291 MPN: UCS-40 | UCS-40 #C10~18,C20 | Part Name: Easy Start Assembly | Compatible Model: UCS40 (C10-18/C20)
500-9307 MPN: UCS-40 | UCS-40 #D03
500-9316 MPN: UCS-40 | For UCS-40 #D04
500-9361 MPN: UCS-40,45,50,57 | #D12 for UCS-40
500-9389 MPN: UCS-40 | #D21 Sprocket for UCS-40
500-9404 MPN: UCS-40 | #E01 for UCS-40
500-9413 MPN: UCS-40 | #E02 for UCS-40
500-9440 MPN: UCS-40 | UCS-40 #E05
500-9459 MPN: UCS-40 | #E06 Sprocket for UCS-40
500-9468 MPN: UCS-40 | UCS-40,40II,42 #E07
500-9538 MPN: UCS-40 | UCS-40,42 #F07
500-9547 MPN: UCS-40 | For UCS-40 #F08
500-9556 MPN: UCS-40 | For UCS-40 #F09
500-9565 MPN: UCS-40 | For UCS-40 #F11
500-9574 MPN: UCS-40 | UCS-40 #F10
500-9592 MPN: UCS-40 | UCS-40 #F13
500-9644 MPN: UCS-40 | UCS-40 #F18
500-9662 MPN: UCS-40 | For UCS-40 #F20
500-9671 MPN: UCS-40 | UCS-40 #F21
500-9705 MPN: UCS-40 | UCS-40 #F24
500-9732 MPN: UCS-45 | For UCS-45 #A01, UCS-47 | Part Name: Cylinder | Compatible Model: UCS45 (A01)/UCS47
500-9802 UCS-45, 50 #B07 / UCS-57, 47, 52 | Part Name: Ignition Coil | Compatible Model: UCS45/50 (B07) / UCS47/52
500-9884 For UCS-40,42,45,50,52,57,40II #D27 (Universal)
500-9893 For UCS-45, 47, 50, 52, 57, 550, 555 | Part Name: Carburetor | Compatible Model: UCS45/50 (D-33) / UCS47/52/57 / UCS550/555
500-9927 UCS-45,50 #F07 | Part Name: Clutch Cover Assembly | Compatible Model: UCS45/50 (F07)
500-9981 #A01 Sprocket for UCS-40, for UCS-42 | Part Name: Cylinder | Compatible Model: UCS40 (A01)/UCS42
501-2116 MPN: UCS-40 | For UCS-40 410mm (16") | Part Name: Guide Bar | Compatible Model: UCS40(16')
501-2620 450mm (18') Bar for UCS-45, 50 | Part Name: Guide Bar | Compatible Model: UCS45/50(18')
501-2675 MPN: UCS-40 | For UCS-40 #B06
501-2727 UCS-50 #A01, UCS-52 | Part Name: Cylinder | Compatible Model: UCS50 (A01)/UCS52
501-2736 MPN: UCS-40 | UCS-40 #A17
501-2754 MPN: UCS-40 | UCS-40,42,440,40II #E09,E10,E11
501-2763 MPN: UCS-40 | UCS-40 #A05
501-2772 MPN: UCS-40 | UCS-40 #E14
501-2790 MPN: UCS-40 | UDT Engine Saw Universal (Except UCS-25)
501-6158 MPN: UCS-40 | UCS-40 #C09
501-6219 MPN: UCS-45,50 | UCS-45 #B26~35 | Part Name: Easy Start Assembly | Compatible Model: UCS45 (B26-35)
580-0016 MPN: UCS-42 | #70 for UCS-42 | Part Name: Easy Start Assembly | Compatible Model: UCS42 (#70)
580-0034 MPN: UCS-42 | UCS-42 #171 | Part Name: Clutch Cover Assembly | Compatible Model: UCS42 (#171)
580-0043 UCS-47 #204 | Component Name: Easy Start Assembly | Compatible Model: UCS47 (#204)
580-0052 #172 Sprocket for UCS-47, 52, 57 | Part Name: Clutch Cover Assembly | Compatible Model: UCS47/52/57 (#172)
580-0070 For UCS-50, 52 #A33~36 | Component Name: Piston Assembly | Compatible Model: UCS50 (A33~36)/UCS52
580-0089 MPN: UCS-45 | For UCS-45,47 #A33~36 | Part Name: Piston Assembly | Compatible Model: UCS45 (A33~36)
580-0098 MPN: UCS-42,440 | For UCS-42, 440 410mm (16') OREGON | Part Name: Guide Bar | Compatible Model: UCS42/440/45S(16')
580-0104 MPN: UCS-47,52,57,550,555,50S | 450mm (18') Bar for UCS-47, 52, 57, 550, 555, 50S, 55S OREGON | Part Name: Guide Bar | Compatible Model: UCS47/52/57/50S(18')
580-0201 For UCS-40 #D11,12,13
580-0256 MPN: UCS-20 | UCS-20 (#25-29 Tooth) OREGON | Product Name: Chainsaw Blade | Compatible Model: UCS20(10') | Chainsaw Blade: 25x29
580-0292 MPN: UCS-40 | UCS-40 #D2
580-0308 MPN: UCS-40 | UCS-40,42,440 #D17
580-0715 UCS-440 #83 | Part Name: Easy Start Assembly | Compatible Model: UCS440 (#83)
580-0733 UCS-440 #171 | Part Name: Clutch Cover Assy | Compatible Model: UCS440 (#171)
580-0779 UCS-555 #186 | Component Name: Clutch Cover Assembly | Compatible Model: UCS555 (#186)
580-0788 UCS-555 #185 | Part Name: Easy Start Assembly | Compatible Model: UCS555 (#185)
580-1042 MPN: UCS-250 | UCS-250 (10') OREGON | Part Name: Guide Bar | Compatible Model: UCS250(10')
580-1051 For UCS-250 #16 | Part Name: Cylinder | Compatible Model: UCS250 (#16)
580-1060 UCS-250 #20 | Part Name: Ignition Coil | Compatible Model: UCS250 (#20)
580-1079 UCS-250 #15 | Part Name: Carburetor | Compatible Model: UCS250 (#115)
580-1097 For UCS-250 #11~14 | Part Name: Piston Assembly | Compatible Model: UCS250 (#11~14)
590-2208 For UCS-40, 42 | Part Name: Ignition Coil | Compatible Model: UCS40/42
590-2217 MPN: UCS-40 | UCS-40 #C6
590-2244 MPN: UCS-40 | UCS-40 #F1~F26 | Part Name: Clutch Cover Assembly | Compatible Model: UCS40 (F1-F26)
590-2262 MPN: UCS-40 | UCS-40 #A33
590-2271 MPN: UCS-40 | #A34 Sprocket for UCS-40
590-2280 MPN: UCS-40 | UCS-40 #A24
590-5825 MPN: UCS-40 | UCS-40 #D20 (Fuel Tank)
590-8381 UCS-40 (#A9~12), UCS-42, UCS-440 (#64~67) | Part Name: Piston Assembly | Compatible Model: UCS40 (A9~12)/UCS42
Chainsaws & MowersUDT Chainsaw Parts
74 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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UDT Chainsaw Parts UCS-40 Piston Ring

Brand UDT Chainsaw Parts·Chainsaws & Mowers

Available part numbers (74)

500-9185, 500-9194, 500-9219, 500-9246, 500-9255, 500-9264, 500-9273, 500-9282, 500-9291, 500-9307 + 64 more — see full table ↓

How to order

Send the UDT Chainsaw Parts part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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RFQ List (0)
Product codeSpec
500-9185MPN: UCS-40 | UCS-40 #A10
500-9194MPN: UCS-40 | UCS-40 #A13 (Piston)
500-9219MPN: UCS-40 | For UCS-40 #A15
500-9246MPN: UCS-40 | UCS-40 #B05
500-9255UCS-40 (#B09), UCS-42 | Part Name: Carburetor | Compatible Model: UCS40 (B09)/UCS42/UCS440
500-9264MPN: UCS-40 | #B15 for UCS-40
500-9273MPN: UCS-40 | UCS-40,42 #B18
500-9282MPN: UCS-40 | UCS-40 #B19
500-9291MPN: UCS-40 | UCS-40 #C10~18,C20 | Part Name: Easy Start Assembly | Compatible Model: UCS40 (C10-18/C20)
500-9307MPN: UCS-40 | UCS-40 #D03
500-9316MPN: UCS-40 | For UCS-40 #D04
500-9361MPN: UCS-40,45,50,57 | #D12 for UCS-40
500-9389MPN: UCS-40 | #D21 Sprocket for UCS-40
500-9404MPN: UCS-40 | #E01 for UCS-40
500-9413MPN: UCS-40 | #E02 for UCS-40
500-9440MPN: UCS-40 | UCS-40 #E05
500-9459MPN: UCS-40 | #E06 Sprocket for UCS-40
500-9468MPN: UCS-40 | UCS-40,40II,42 #E07
500-9538MPN: UCS-40 | UCS-40,42 #F07
500-9547MPN: UCS-40 | For UCS-40 #F08
500-9556MPN: UCS-40 | For UCS-40 #F09
500-9565MPN: UCS-40 | For UCS-40 #F11
500-9574MPN: UCS-40 | UCS-40 #F10
500-9592MPN: UCS-40 | UCS-40 #F13
500-9644MPN: UCS-40 | UCS-40 #F18
500-9662MPN: UCS-40 | For UCS-40 #F20
500-9671MPN: UCS-40 | UCS-40 #F21
500-9705MPN: UCS-40 | UCS-40 #F24
500-9732MPN: UCS-45 | For UCS-45 #A01, UCS-47 | Part Name: Cylinder | Compatible Model: UCS45 (A01)/UCS47
500-9802UCS-45, 50 #B07 / UCS-57, 47, 52 | Part Name: Ignition Coil | Compatible Model: UCS45/50 (B07) / UCS47/52
500-9884For UCS-40,42,45,50,52,57,40II #D27 (Universal)
500-9893For UCS-45, 47, 50, 52, 57, 550, 555 | Part Name: Carburetor | Compatible Model: UCS45/50 (D-33) / UCS47/52/57 / UCS550/555
500-9927UCS-45,50 #F07 | Part Name: Clutch Cover Assembly | Compatible Model: UCS45/50 (F07)
500-9981#A01 Sprocket for UCS-40, for UCS-42 | Part Name: Cylinder | Compatible Model: UCS40 (A01)/UCS42
501-2116MPN: UCS-40 | For UCS-40 410mm (16") | Part Name: Guide Bar | Compatible Model: UCS40(16')
501-2620450mm (18') Bar for UCS-45, 50 | Part Name: Guide Bar | Compatible Model: UCS45/50(18')
501-2675MPN: UCS-40 | For UCS-40 #B06
501-2727UCS-50 #A01, UCS-52 | Part Name: Cylinder | Compatible Model: UCS50 (A01)/UCS52
501-2736MPN: UCS-40 | UCS-40 #A17
501-2754MPN: UCS-40 | UCS-40,42,440,40II #E09,E10,E11
501-2763MPN: UCS-40 | UCS-40 #A05
501-2772MPN: UCS-40 | UCS-40 #E14
501-2790MPN: UCS-40 | UDT Engine Saw Universal (Except UCS-25)
501-6158MPN: UCS-40 | UCS-40 #C09
501-6219MPN: UCS-45,50 | UCS-45 #B26~35 | Part Name: Easy Start Assembly | Compatible Model: UCS45 (B26-35)
580-0016MPN: UCS-42 | #70 for UCS-42 | Part Name: Easy Start Assembly | Compatible Model: UCS42 (#70)
580-0034MPN: UCS-42 | UCS-42 #171 | Part Name: Clutch Cover Assembly | Compatible Model: UCS42 (#171)
580-0043UCS-47 #204 | Component Name: Easy Start Assembly | Compatible Model: UCS47 (#204)
580-0052#172 Sprocket for UCS-47, 52, 57 | Part Name: Clutch Cover Assembly | Compatible Model: UCS47/52/57 (#172)
580-0070For UCS-50, 52 #A33~36 | Component Name: Piston Assembly | Compatible Model: UCS50 (A33~36)/UCS52
580-0089MPN: UCS-45 | For UCS-45,47 #A33~36 | Part Name: Piston Assembly | Compatible Model: UCS45 (A33~36)
580-0098MPN: UCS-42,440 | For UCS-42, 440 410mm (16') OREGON | Part Name: Guide Bar | Compatible Model: UCS42/440/45S(16')
580-0104MPN: UCS-47,52,57,550,555,50S | 450mm (18') Bar for UCS-47, 52, 57, 550, 555, 50S, 55S OREGON | Part Name: Guide Bar | Compatible Model: UCS47/52/57/50S(18')
580-0201For UCS-40 #D11,12,13
580-0256MPN: UCS-20 | UCS-20 (#25-29 Tooth) OREGON | Product Name: Chainsaw Blade | Compatible Model: UCS20(10') | Chainsaw Blade: 25x29
580-0292MPN: UCS-40 | UCS-40 #D2
580-0308MPN: UCS-40 | UCS-40,42,440 #D17
580-0715UCS-440 #83 | Part Name: Easy Start Assembly | Compatible Model: UCS440 (#83)
580-0733UCS-440 #171 | Part Name: Clutch Cover Assy | Compatible Model: UCS440 (#171)
580-0779UCS-555 #186 | Component Name: Clutch Cover Assembly | Compatible Model: UCS555 (#186)
580-0788UCS-555 #185 | Part Name: Easy Start Assembly | Compatible Model: UCS555 (#185)
580-1042MPN: UCS-250 | UCS-250 (10') OREGON | Part Name: Guide Bar | Compatible Model: UCS250(10')
580-1051For UCS-250 #16 | Part Name: Cylinder | Compatible Model: UCS250 (#16)
580-1060UCS-250 #20 | Part Name: Ignition Coil | Compatible Model: UCS250 (#20)
580-1079UCS-250 #15 | Part Name: Carburetor | Compatible Model: UCS250 (#115)
580-1097For UCS-250 #11~14 | Part Name: Piston Assembly | Compatible Model: UCS250 (#11~14)
590-2208For UCS-40, 42 | Part Name: Ignition Coil | Compatible Model: UCS40/42
590-2217MPN: UCS-40 | UCS-40 #C6
590-2244MPN: UCS-40 | UCS-40 #F1~F26 | Part Name: Clutch Cover Assembly | Compatible Model: UCS40 (F1-F26)
590-2262MPN: UCS-40 | UCS-40 #A33
590-2271MPN: UCS-40 | #A34 Sprocket for UCS-40
590-2280MPN: UCS-40 | UCS-40 #A24
590-5825MPN: UCS-40 | UCS-40 #D20 (Fuel Tank)
590-8381UCS-40 (#A9~12), UCS-42, UCS-440 (#64~67) | Part Name: Piston Assembly | Compatible Model: UCS40 (A9~12)/UCS42

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