Stihl 3/8" 7 Tooth Spur Sprocket - MS362, MS441, 046

Restore max power transfer, smooth cutting action, and reliable chain drive engagement to your heavy-duty chainsaw with the Genuine OEM STIHL 3/8" 7-Tooth Sprocket Drum Kit (Part #1128 640 2000). Designed as an exact direct-fit replacement, this heavy-duty steel drum assembly swaps out grooved, worn, or heat-damaged drive components—stopping chain chatter, drive link burring, and clutch slippage instantly.

Why Choose Genuine OEM over Aftermarket? High-torque 60cc to 70cc class powerheads exert extreme stress on drive components. Cheap aftermarket drums frequently suffer from out-of-round machining, soft metal spur teeth that groove rapidly, and improper drum wall tolerances that destroy clutch pads. Genuine STIHL drive components guarantee exact dynamic balance, precise needle bearing fitment, and commercial-grade durability.

What's Included

• (1) Heavy-Duty Clutch Drum
• (1) 3/8" 7-Tooth Sprocket
• (1) Precision Clutch Washer
• (1) Factory E-Clip Retaining Ring

Key Features

• 100% Genuine OEM STIHL Quality: Built to exact factory specifications using heat-treated structural steel alloys for maximum service life.
• High-Torque 3/8" Pitch 7-Tooth Gearing: Delivers optimal pulling force through dense hardwoods, heavy log bucking, and tough timber felling.
• Induction-Hardened Steel Drive Teeth: Precision-ground teeth resist premature grooving to keep chain drive links meshing smoothly and safely.
• Direct Drop-In Replacement: Engineered to restore crisp clutch engagement and eliminate unwanted drive line vibration.
• Complete Replacement Hardware: Includes required drive line washer and retaining clip to ensure a fast, reliable installation.

Product Specifications & Compatibility