Bobcat Sprocket (6813372/6811939)

PRODUCT DESCRIPTION

This aftermarket replacement drive sprocket is compatible with multiple Bobcat mini excavators. It features a 12-bolt-hole design and corresponds to Bobcat part number 6813372. We also supply a 9-bolt-hole version—please confirm the number of bolt holes required for your equipment before placing an order.

I. Core Compatible Models
This sprocket (6813372) is guaranteed to fit the following Bobcat models precisely:
325, 325D, 328, 328E, 329
331, 331D, 331E, 331G, 334
425ZTS, 428

II. Specifications (Model 6813372/6811939)
Number of Drive Teeth: 21
Number of Drive Motor Bolt Holes: 12
Inside Diameter: 8 inches
Outside Diameter: 14 1/4 inches

III. Alternate Part Number Notes
Corresponding Bobcat dealer part numbers: 6811939, 6813372

IV. Other Version Notes
There is also a 9-bolt-hole sprocket version (part number 6811940). Please 务必 verify the number of bolt holes required for your equipment.

V. Installation Specifications
Tighten to the torque parameters specified by Bobcat to avoid damaging the drive sprocket or travel motor.
Manual installation is recommended, strictly following the manufacturer’s specified torque standards.

VI. Maintenance Recommendations
Sprockets and rubber tracks should be replaced simultaneously to maximize the service life of undercarriage components.
When purchasing, please provide the serial number of your mini excavator, and we will double-check to ensure proper fitment.

VII. Product Craftsmanship and Quality
Sprockets for Bobcat mini excavators undergo a one-step electrical induction hardening process, which increases the hardness depth of the teeth while preventing breakage.
The hardening depth of this aftermarket sprocket is only a few millimeters different from the original OEM sprocket, offering excellent value.

VIII. Related Parts Availability
We also supply rubber tracks, final drive motors, and other undercarriage components for Bobcat mini excavators. For 331 and X331 models, related parts include:
12-bolt sprocket (this product)
9-bolt sprocket
Aftermarket bottom rollers
Aftermarket front idlers