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