Description
The Cummins Onan 0309-0717 is a genuine OEM pressure switch for select compatible generator applications. It features a 1 PSI actuation point, normally closed contacts, and a 1/8-27 NPT threaded connection.
Part-Number References:
- Cummins Onan 0309-0717
- Cummins Onan 309-0717
- 83391
- 83391-1-01
Product Specifications:
- Manufacturer: Cummins Onan
- Brand: Cummins Onan
- Switch type: Pressure switch
- Actuation pressure: 1 PSI
- Contact configuration: Normally closed
- Thread size: 1/8-27 NPT
- Package quantity: 1 switch
- Condition: New
Product Information:
- SKU: 00850044193035
- Item weight: 0.149 lb
- Dimensions: 2.75 × 2 × 1.5 in.
The 83391 and 83391-1-01 references should be treated as cross-reference numbers, not complete generator model numbers. Compatibility depends on the generator model, specification letter, serial number, control circuit, and required switch configuration.
Use the thread-sealing and tightening procedure specified in the applicable service manual. Tapered pipe threads can damage the mounting port if overtightened. Disable automatic startup, disconnect the battery, and allow the equipment to cool before installation.








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