WATER PUMP / OIL PUMP
GCO: F31.40

Water Pump for Komatsu PC 300-7 6D114 Excavator | Also Fits 6CT, PILLING RING

OEM Part No. 6743611530 / 6743611531 / 3966841 / 4934058 / 4089647 / 3800975 / 3966841 / 3286293 / 5291445 / 3940386 / 3973114
Compatible With PC 300-7 6D114 / 6CT / PILLING RING
Availability ✓ In Stock
Water Pump Pc 300-7 6D114 / 6Ct / Pilling Ring – PRECISION FLUID DELIVERY COMPONENT | OEM: 6743611530
✓ Genuine Quality ✓ Pan India Shipping ✓ Expert Support

Product Specifications

BrandCompatible Model(s)OEM Part NumberGCO CodePart TypeAvailability
KomatsuPC 300-7 6D114 / 6CT / PILLING RING6743611530 / 6743611531 / 3966841 / 4934058 / 4089647 / 3800975 / 3966841 / 3286293 / 5291445 / 3940386 / 3973114F31.40WATER PUMP / OIL PUMP✓ In Stock

Product Description

OEM Part Numbers: 6743611530 / 6743611531 / 3966841 / 4934058 / 4089647 / 3800975 / 3966841 / 3286293 / 5291445 / 3940386 / 3973114

Machine Compatibility

Machine ModelTypePart Number
PC 300-7 6D114Hydraulic Excavator6743611530
6CT6743611531
PILLING RING3966841

The 6743611530 water pump pc 300-7 6d114 / 6ct / pilling ring is a high-precision fluid delivery system for the PC 300-7 6D114 / 6CT / PILLING RING, maintaining consistent pressure and flow to keep the engine performing at full capacity under all load conditions. Pump failure causes immediate performance degradation — including power loss, excessive smoke, rough idle, and stalling — conditions that worsen rapidly if left unaddressed. Engineered to OEM standard 6743611530 for exact fitment and immediate performance recovery on the PC 300-7 6D114 / 6CT / PILLING RING.

Key Features:

  • Consistent Fluid Delivery: Maintains optimal pressure and flow to the engine system for smooth, efficient operation under all load conditions.
  • OEM Specification: Built to reference 6743611530 for direct fitment on the PC 300-7 6D114 / 6CT / PILLING RING without modification or adjustment.
  • High-Durability Design: Engineered for continuous operation under the demanding pressure cycles of heavy-duty machinery.

The 6743611530 water pump pc 300-7 6d114 / 6ct / pilling ring ensures reliable, pressurised fluid supply and sustained engine performance on the PC 300-7 6D114 / 6CT / PILLING RING.

What Does This Water Pump / Oil Pump Do?

Circulates coolant or lubricating oil through the engine at the correct pressure and flow rate to maintain operating temperature and prevent excessive wear on internal moving components.

Possible Water Pump / Oil Pump Problem Symptoms

If your machine is showing any of the following, a faulty water pump / oil pump may be the cause:

  • Coolant or oil temperature rising above normal operating range
  • Oil pressure warning light activating during operation
  • Coolant leaks visible at the pump body, housing, or seal joints
  • Engine overheating even after coolant has been topped up

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.

Supplying Since 1999

Over 27 years of experience in the earthmoving parts industry.

Technical Support

Our team helps you confirm the right part before you order.

GST Billing

Proper GST invoices on every order for your accounting needs.

Pan-India Supply

Fast dispatch from Jalandhar to all states across India.

Bulk & Wholesale

Volume pricing available for fleet owners, dealers and distributors.

OEM & Aftermarket

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:

  • 1
    Machine Model & Year

    E.g. Komatsu PC200-8, CAT 320D, JCB JS205 — include the model suffix if known.

  • 2
    Machine Serial Number

    Found on the machine's chassis plate. Helps confirm the exact production variant.

  • 3
    OEM 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 hours

Disclaimer: 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.