Pump Coupling Comp. for Caterpillar CAT 320D Excavator | Also Fits 323 (PU)
Product Specifications
| Brand | Compatible Model(s) | OEM Part Number | Part Type | Availability |
|---|---|---|---|---|
| Caterpillar (CAT) | CAT 320D / 323 (PU) | 3396951 | PUMP COUPLING / CLUTCH DISC DAMPNER | ✓ In Stock |
Product Description
OEM Part Numbers: 3396951
| Machine Model | Type | Part Number |
|---|---|---|
| CAT 320D | Excavator | 3396951 |
| 323 (PU) | Excavator | 3396951 |
The 3396951 pump coupling comp. cat 320d / 323 (pu) is a heavy-duty fluid delivery component engineered for the CAT 320D / 323 (PU), ensuring a reliable, pressurised supply to the engine system throughout demanding operational cycles. Without a properly functioning pump, engine performance drops sharply — leading to hard starts, power deficiency, and the risk of complete engine shutdown during critical operations. Manufactured to OEM specification 3396951 for direct fitment on the CAT 320D / 323 (PU), restoring full delivery performance with no additional adjustment.
Key Features:
- Full Pressure Restoration: Delivers the rated pressure and flow required for peak engine or hydraulic system performance.
- Direct OEM Replacement: Manufactured to specification 3396951 for exact installation on the CAT 320D / 323 (PU).
- Reliable Heavy-Duty Performance: Built to withstand the high-cycle, high-pressure demands of industrial machinery operation.
The 3396951 pump coupling comp. cat 320d / 323 (pu) is an essential fluid delivery component for maintaining full power output on the CAT 320D / 323 (PU).
What Does This Pump Coupling / Clutch Disc Dampner Do?
The pump coupling connects the engine flywheel to the hydraulic pump drive shaft, transmitting rotational power while absorbing shock loads and vibration caused by pump pressure spikes. The clutch disc damper uses rubber elements or spring-loaded damping rings to smooth out torsional vibration between the engine and drivetrain.
Possible Pump Coupling / Clutch Disc Dampner Problem Symptoms
If your machine is showing any of the following, a faulty pump coupling / clutch disc dampner may be the cause:
- Vibration or shudder felt through the machine frame when hydraulic functions are operated under load
- Knocking or clunking noise from the pump/engine connection point during load changes
- Hydraulic pump running but producing reduced output pressure due to slipping coupling
- Visible rubber deterioration, cracks, or missing segments in the coupling spider or damper ring
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.
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