The YNF17551 Sprocket is a premium undercarriage drive component engineered for the CAT 320D excavator. Featuring a 21-tooth design and a 16-hole mounting pattern, this sprocket ensures efficient power transfer from the final drive to the track chain. Built with tough, heat-treated steel, it delivers exceptional wear resistance and consistent performance in demanding construction environments.

• Designed specifically for CAT 320D undercarriage systems

• 21 teeth for optimal engagement with the track chain

• 16 mounting holes for a secure and precise fit

• Manufactured from high-strength, heat-treated alloy steel

• Durable tooth profile reduces wear and increases service life

• Provides stable track movement and smooth travel operation

• Resists abrasion, impact, and heavy working loads

• Easy installation with compatible bolt alignment

Suitable for CAT 320D excavators, widely used in earthmoving, mining, construction, and quarry applications.

We provide compatibility checks, installation advice, and general undercarriage maintenance guidance.

Each sprocket is treated with anti-corrosion coating, securely wrapped, and packed in a heavy-duty crate to ensure safe delivery.

1. How many mounting holes does this sprocket have?
It has 16 holes, matching the CAT 320D design.

2. Is this sprocket suitable for all CAT 320D variants?
Yes, it fits standard 320D undercarriage configurations.

3. What material is used for this sprocket?
High-strength alloy steel with heat treatment for longevity.

4. How do I know if my sprocket should be replaced?
Worn, sharp, or chipped teeth and chain slipping are common indicators.

5. Can I install this sprocket without special tools?
Yes, standard undercarriage tools are sufficient.