Oregon Pro Spur® Sprocket - .325" x 7 Tooth
The Oregon 108308XF is a rugged, one-piece drive system engineered for professional users who require superior performance and high value. This dependable sprocket is designed to withstand the rigors of heavy-duty cutting, providing consistent power transfer from your engine to the cutting chain.
Rugged Cold-Forged Construction
Manufactured using an advanced cold-forged process, this sprocket features improved metal density for maximum wear resistance. This high-durability design ensures a longer operational life and helps maintain precise chain alignment throughout its use.
Product Specifications:
| Part Number | 108308XF (108308X) |
| Pitch / Tooth Count | .325" Pitch / 7 Tooth |
| Sprocket Type | Spur (One-Piece) |
| Replaces OEM | Husqvarna 578 09 79-01 |
Model Fit Guide:
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Husqvarna: 340, 345, 346XP, 346XPG, 350, 351, 353, 357XP, 359, 445, 445e, 445 II, 450, 450e, 450 Rancher, 450 Rancher II
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Jonsered: 2141, 2145, 2149, 2150, 2152, 2159, CS 2141, CS 2145, CS 2150, CS 2152, CS 2152W, CS 2153, CS 2156, CS 2159, CS 2159C, CS 2159CWH, CS 2159WH, CS 2245, CS 2250, CS 2250S
⚠️ Critical Compatibility Note:
Please verify your saw's current setup before ordering. Some of the models listed above were available with optional 3/8" pitch sprockets. This 108308XF sprocket only works with .325" pitch bars and chains. Mismatched components will cause immediate drive damage.
⚙️ Related Parts & Maintenance:
🛠️ Mechanic's Tip:
To maintain peak performance, Oregon recommends replacing this spur sprocket after every two chain loops. For the Husqvarna 450 Rancher series, always inspect the needle bearing (H131614) for heat discoloration or wear. Applying a small amount of high-quality grease to the bearing during maintenance will significantly extend the life of both the sprocket and the crankshaft.
578 09 79-01, 503 98 00-02
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High Quality 
Spur sprocket