Description
Overview:
This Genuine Oregon 3/8-7 SM7 drive sprocket (MPN 18720) is a steel clutch-drum sprocket designed for small-mount chainsaws. It drives the chain at a consistent speed and keeps it aligned on the bar, helping to maintain clean cuts and reduce wear on the chain and guide bar. With a 3/8 in pitch (9.53 mm) and 7-tooth configuration, it is a direct replacement for worn or damaged sprockets on many popular machines, including the Husqvarna 154 and 254. Built from durable steel with a plain metal finish, it offers reliable performance for routine servicing. Suitable for both trade and home use, it restores smooth chain movement and efficient power transfer.
Key Features:
- Genuine Oregon part for assured fit and performance (MPN 18720)
- 3/8 in pitch (9.53 mm), 7-tooth SM7 small-mount pattern
- Durable steel construction for long service life
- Accurate chain tracking for smoother cutting and less wear on bar and chain
- Direct replacement; installs with standard chainsaw service tools
- Consistent drive and reduced chain slip or skipping when the old sprocket is worn
- Suitable for professional forestry, landscaping, and domestic cutting tasks
- Sold individually for straightforward maintenance cycles
Typical Applications:
Replacement of a worn or damaged chainsaw drive sprocket during routine servicing. Suitable for general felling, limbing, pruning, firewood processing, and site clearance. Helps maintain cutting efficiency, reduces vibration from worn drive components, and supports safe, predictable chain movement.
Also known as:
Drive sprocket, spur sprocket, clutch drum sprocket, chain wheel, sprocket drum, chain drive gear.
Fits Models:
028, 028 Super, 028Super, 029, 034, 034 Super, 034Super, 036, 036 Pro, 036Pro, 039, 109, 110, 110iH, 111, 115, 115i, 115iH, 154, 2051, 2054, 2055, 2063, 240CC, 240SL, 254, 254XP, 257, 262, 262XP, 35826, 35829, 45, 450, 455, 455 Rancher, 45EV, 460, 460 Rancher, 460Rancher, 49, 50, 50V, 51, 52, 520, 520SP, 521, 525, 535, 540, 55, 55 Rancher, 555, 55EV, 55V, 562XPG, 7600, CS-280, CS-290, CS-300EVL, CS-301, CS-302, CS-315, CS-330, CS-351, CS-351VL, CS-360, CS-3600, CS-360EVL, CS-3900, CS-400EVL, CS-440, CS-4400, CS-440EVL, CS-451, CS-452, CS-500EVL, CS-510, CS-5100, CS-510EVL, CS-550, CS-610, CS-610T, CS280, CS290, CS301, CS302, CS315, CS330, CS351, CS351VL, CS360, CS3600, CS3900, CS40LE, CS440, CS4400, CS451, CS452, CS510, CS5100, CS550, CS610, CS610T, DCS430, DCS4300, DCS5200i, DCS520i, EA6100P53G, EA6100PREG, EA6101P53G, G-561, G-621, G561, G561AVS, G621, G621AVS, Green Machine, GreenMachine, Husqvarna 154, Husqvarna 254, Husqvarna 562XP, Husqvarna562XP, MCV51R, MS 290, MS 310, MS 311, MS 360, MS 360 C, MS 360 Pro, MS 360 QS, MS 390, MS 391, MS290, MS310, MS311, MS360, MS360C, MS360Pro, MS360QS, MS390, MS391, P-400, P-500, P-5000, P-5000 Plus, P-5000Plus, P400, P500, P5000, P5100, PS-5105, PS-5105H, PS5105, PS5105H
Alternate Part Numbers:
18720
Product Specifications
| L&S Part No. | OR18720 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Oregon |
| OEM No. | 18720 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Key Features | - 3/8 in pitch, 7-tooth configuration for precise chain alignment - Compatible with Husqvarna 154, 254, and more models - Durable steel construction ensures long-lasting performance - Direct replacement using standard chainsaw service tools - Suitable for professional and domestic cutting tasks |
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