STARTER MOTOR
Solenoid Switch For Starter for Caterpillar CAT 320 Excavator

Solenoid Switch For Starter for Caterpillar CAT 320 Excavator

OEM Part No. 3E 7859
Compatible With CAT 320
Category STARTER MOTOR
Availability ✓ In Stock
Solenoid Switch For Starter Cat 320 – HEAVY-DUTY ELECTRICAL SWITCHING UNIT | OEM: 3E 7859
✓ Genuine Quality ✓ Pan India Shipping ✓ Expert Support

Product Specifications

BrandCompatible Model(s)OEM Part NumberPart TypeAvailability
Caterpillar (CAT)CAT 3203E 7859STARTER MOTOR✓ In Stock

Product Description

OEM Part Numbers: 3E 7859

Machine ModelPart Number
CAT 3203E 7859

The 3E 7859 solenoid switch for starter cat 320 is an electrical control component for the CAT 320, switching power to key machine circuits and systems based on operator input or control system signals. Relay or switch failure results in loss of control over the affected electrical circuit, causing either permanent power or complete loss of power to critical machine systems. Engineered to OEM standard 3E 7859 for exact replacement on the CAT 320 with correct switching characteristics.

Key Features:

  • Reliable Circuit Switching: Controls electrical power to key machine circuits with accurate, consistent switching performance.
  • OEM Specification: Manufactured to reference 3E 7859 for direct connector and current-compatible fitment on the CAT 320.
  • Heavy-Duty Rated: Built to handle the electrical loads and switching cycles of industrial heavy machinery.

The 3E 7859 solenoid switch for starter cat 320 ensures accurate, reliable electrical switching and circuit control on the CAT 320.

What Does This Starter Motor Do?

An electric motor that cranks the engine during the start cycle by engaging the flywheel ring gear with a pinion gear. Draws a high current from the battery for a short burst to turn the engine over until combustion begins.

Possible Starter Motor Problem Symptoms

If your machine is showing any of the following, a faulty starter motor may be the cause:

  • A single click or series of clicks when the ignition key is turned but the engine does not crank
  • Slow or laboured engine cranking, especially in cold conditions
  • Starter motor spinning but not engaging the flywheel (grinding noise)
  • No response at all when the ignition key is turned to start

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?

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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.