Flywheel Ring for Caterpillar CAT 120K | Also Fits CAT 320
Product Specifications
| Brand | Compatible Model(s) | OEM Part Number | Part Type | Availability |
|---|---|---|---|---|
| Caterpillar (CAT) | CAT 120K / CAT 320 | C6.6 / 2770588 | FLYWHEEL RING GEAR | ✓ In Stock |
Product Description
OEM Part Numbers: C6.6 / 2770588
Machine Compatibility
| Machine Model | Type | Part Number |
|---|---|---|
| CAT 120K | Hydraulic Excavator | C6.6 |
| CAT 320 | Hydraulic Excavator | 2770588 |
The C6.6 flywheel ring cat 120k / cat 320 is a heavy-duty replacement part for the CAT 120K / CAT 320, manufactured to OEM specification to ensure correct fitment and reliable performance in demanding industrial applications. A faulty or worn component affects overall machine efficiency and reliability, making timely replacement essential to maintain operational uptime and prevent cascade failures. Built to OEM specification C6.6 for direct fitment on the CAT 120K / CAT 320 with no modification required.
Key Features:
- Genuine Quality Construction: Engineered to OEM specification for correct fit, function, and service life.
- OEM Specification: Manufactured to reference C6.6 for direct replacement on the CAT 120K / CAT 320.
- Reduced Downtime: Ensures rapid, accurate fitment to minimise machine downtime and restore site productivity.
The C6.6 flywheel ring cat 120k / cat 320 is an essential spare part for maintaining uptime and productivity on the CAT 120K / CAT 320.
What Does This Flywheel Ring Gear Do?
A toothed ring gear press-fitted or bolted to the outer circumference of the engine flywheel. The starter motor pinion gear engages with the ring gear teeth to crank the engine during starting. The ring gear also provides a reference surface for some engine speed sensors.
Possible Flywheel Ring Gear Problem Symptoms
If your machine is showing any of the following, a faulty flywheel ring gear may be the cause:
- Grinding noise when the starter motor engages, indicating worn or missing teeth
- Starter motor spinning freely without cranking the engine (pinion not engaging ring gear teeth)
- Engine cranking inconsistently or failing to turn over on some start attempts
- Visible tooth damage, chipping, or missing sections on the ring gear when inspected
Why Buy From GCO Products?
Gautam & Company has been supplying earthmoving machinery spare parts since 1999. Here is why contractors, fleet operators, and dealers across India trust us.
Over 27 years of experience in the earthmoving parts industry.
Our team helps you confirm the right part before you order.
Proper GST invoices on every order for your accounting needs.
Fast dispatch from Jalandhar to all states across India.
Volume pricing available for fleet owners, dealers and distributors.
Both genuine OEM and quality aftermarket options available.
How to Confirm Compatibility
To ensure this part is the correct fit for your machine, have the following ready when you contact us:
- 1Machine Model & Year
E.g. Komatsu PC200-8, CAT 320D, JCB JS205 — include the model suffix if known.
- 2Machine Serial Number
Found on the machine's chassis plate. Helps confirm the exact production variant.
- 3OEM Part Number
From your parts manual, the old part itself, or the machine's service documentation.
Not sure if this part fits your machine?
WhatsApp Us to Confirm Typically replies within a few hoursDisclaimer: This is an aftermarket replacement part supplied by GCO Products (Gautam & Company) and is not manufactured by, affiliated with, or endorsed by the original equipment manufacturer (OEM). All brand names, model numbers, and OEM part numbers referenced on this page are used solely for the purpose of identifying compatibility and describing the application of this part. All trademarks, registered marks, and brand identifiers remain the exclusive property of their respective owners. GCO Products claims no association with, sponsorship by, or endorsement by any OEM brand mentioned herein.