Skip to product information
1_7eaf8ef8-2eda-41b3-8f0e-fcf72f36a5fb - Northline Parts

Ignition / Start Switch 9G-7641 for Cat 312B 314C 321C Excavators

SKU: NLT2T04675
$46.69 In Stock
$46.69
Sale price  $46.69 Regular price 
Ships for free in 2–4 business days.
3-position 12/24V keyed start switch 9G-7641 for compatible Caterpillar excavators and heavy equipment.
Estimated delivery between
Shop at Northline Parts Best Customer Service Best Online Parts

Let Northline Parts Do the Heavy Lifting for You!

Not sure which part you need? Our team can help you find the right replacement.

Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT

Live Chat: Available 24/7

I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
Application Fitment Notes
Cat 312B / 312B L Confirmed Cat application family.
Cat 314-series / 321-series excavators Verify machine serial and original switch.
Other Cat equipment using 9G-7641 Match part number before ordering.

Product Overview

Caterpillar describes 9G-7641 as a spring-return instrument-panel start switch that activates the starter motor and allows the key to be removed only in OFF.

Cat's compatibility data includes 312B and numerous other excavator families. The source title lists 321C LCR and 314C CR, so verify the machine serial before assuming fitment.

Key Features & Performance

  • 3-position keyed start switch
  • 12/24V electrical compatibility
  • Spring-return START position
  • Cat reference 9G-7641

Common Reasons for Replacement

  • Key switch does not spring back from START
  • Intermittent starter activation
  • Burned terminals or worn key cylinder

Technical Specifications

  • Voltage: 12/24V
  • Positions: 3
  • Part Type: Keyed Start / Ignition Switch

OE / Reference Numbers

  • 9G-7641

Frequently Asked Questions

How do I confirm compatibility? Confirm 9G-7641 in the Cat parts system for the machine serial number and compare terminal labeling before ordering.

Is this an OEM part? This listing is for a replacement part. Brand names and OE/reference numbers are used to identify fitment unless the listing specifically states that the item is genuine OEM.

Customers also purchased