For CAT 3204 3304 3304B 3306 3306B Engine 12V Fuel Shutoff Solenoid 125-5773
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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.
12V Fuel Shutoff Solenoid for CAT
This 12V fuel shutoff solenoid is a direct replacement part for Caterpillar 3204, 3304, 3304B, 3306, and 3306B engines, controlling fuel flow to the injection pump for reliable shutoff. It incorporates OEM cross-reference number 125-5773 to ensure proper fit and function.
Overview
This 12V fuel shutoff solenoid for CAT engines is a critical component that stops fuel delivery when the ignition is switched off, preventing diesel run-on and ensuring safe shutdown. Designed for Caterpillar industrial and heavy-duty power plants, this solenoid actuates the fuel cutoff lever with a powerful magnetic pull. It is a direct replacement for the OEM 125-5773 solenoid used across multiple CAT engine series.
Built For Performance
- 12-volt DC operating voltage for standard electrical systems
- Spring-return mechanism for fail-safe fuel cutoff
- Compact mounting footprint matches OEM 125-5773 dimensions
- Sealed coil winding resists vibration and heat
- Brass plunger and stainless steel return spring for corrosion resistance
Fits These Machines
- for CAT 3204 engine
- for CAT 3304 engine
- for CAT 3304B engine
- for CAT 3306 engine
- for CAT 3306B engine
On-The-Job Use
- Used on generator sets powered by CAT 3306 engines
- Fits wheel loaders and off-highway trucks with 3304 or 3306 engines
- Common replacement in agricultural tractors and irrigation pumps driven by CAT 3204
- Works in excavators and material handlers using 3306B power
Specs At A Glance
| Voltage | 12V DC |
| OEM Part Number | 125-5773 |
| Part Number(s) | 125-5773 |
| Operation Type | Fuel shutoff solenoid |
Good To Know
Q: Will this solenoid work on my 3306 engine that currently has a different part number? A: This solenoid matches the 125-5773 reference, commonly fitted to 3306 and 3306B engines. Verify the mounting bracket and plunger travel against your existing solenoid before installing.
Q: Does this solenoid require a separate relay? A: No, it is a direct 12V pull-type solenoid that operates from the ignition switch. Check that your key switch provides a continuous 12V feed when in the run position.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.