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FLASHSALE26

Cummins Onan Carburetor Repair Seal Kit for P126G, P128G, P220G, OL16, OL18, OL20, LX720, LX770 and LX790

Regular price $26.95

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Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


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If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This Cummins Onan carburetor repair seal kit is intended for the carburetor applications listed below, including Onan P126G, P128G and P220G engines, OL16, OL18 and OL20 units, and Miller LX720, LX770 and LX790 applications.

The listed reference numbers for this repair seal kit are Onan/Cummins numbers 146-0657, 146-6100, 146-0479, 146-0414 and 146-0496. Confirm the carburetor and reference number on your existing equipment before ordering.

  • Carburetor repair seal kit for selected Cummins Onan applications.
  • Designed for the engine and equipment models listed in this description.
  • Use the reference numbers and application details to verify compatibility before installation.

Part Number Matrix

The following manufacturer reference numbers are associated with this repair seal kit.

Brand Reference Number
Onan / Cummins 146-0657
Onan / Cummins 146-6100
Onan / Cummins 146-0479
Onan / Cummins 146-0414
Onan / Cummins 146-0496

Engine & Model Compatibility

Compatibility is based on the company application data for this product. Match the complete model designation and carburetor reference number before purchasing.

Brand Model or Application Product Use
Onan Cummins P126G Carburetor repair seal kit application
Onan Cummins P128G Carburetor repair seal kit application
Onan Cummins P220G Carburetor repair seal kit application
Onan Cummins OL16 Carburetor repair seal kit application
Onan Cummins OL18 Carburetor repair seal kit application
Onan Cummins OL20 Carburetor repair seal kit application
Miller LX720 Carburetor repair seal kit application
Miller LX770 Carburetor repair seal kit application
Miller LX790 Carburetor repair seal kit application

Technical Specifications

Product Type
Carburetor repair seal kit
Brand Application
Cummins Onan
Compatible Applications
Onan P126G, P128G and P220G; OL16, OL18 and OL20; Miller LX720, LX770 and LX790
Reference Numbers
146-0657, 146-6100, 146-0479, 146-0414 and 146-0496

What’s in the Box

One carburetor repair seal kit. The exact seal and gasket assortment should be compared with the existing carburetor and the product image before installation.

Installation Notes

  1. Verify the complete equipment model and carburetor reference number before beginning work.
  2. Clean the carburetor mating surfaces and remove old seal material before fitting replacement seals.
  3. Use care during disassembly so small carburetor components are not lost or damaged.
  4. Install the seals in their original locations and tighten fasteners according to the applicable equipment service instructions.
  5. Inspect for fuel leakage after reassembly and before returning the equipment to service.

Troubleshooting & FAQ

Which applications are listed for this repair seal kit?

The listed applications are Onan Cummins P126G, P128G and P220G, OL16, OL18 and OL20, and Miller LX720, LX770 and LX790.

Which reference numbers should I compare?

Compare your existing part or carburetor documentation with 146-0657, 146-6100, 146-0479, 146-0414 and 146-0496. A matching model name alone is not enough if the carburetor configuration differs.

Does this listing include a complete carburetor?

No. This listing is for a carburetor repair seal kit, not a complete replacement carburetor.

How do I confirm fitment?

Check the model designation, carburetor identification and one or more of the listed reference numbers against your existing equipment. If these details do not match, confirm compatibility with the equipment service documentation before ordering.

Safety & Important Information

  • Fuel-system work should be performed with the engine stopped, cooled and isolated from ignition sources.
  • Use appropriate protective equipment and work in a well-ventilated area.
  • Verify the application and compare the replacement seals with the original parts before installation.
  • Do not operate equipment if fuel leaks are present after installation.

About Sea Sierra

  • Application-Focused Parts — We provide replacement parts organized by equipment model and reference number.
  • Clear Compatibility Information — Review the listed applications and reference numbers before ordering.
  • Practical Replacement Solutions — Service parts are selected to support maintenance and repair of applicable equipment.

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