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146-0657 Carburetor Repair Seal Kit Fits Cummins Onan P126G, P128G (7 HP)

$24.50

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Product Overview

XR MARINE · CARBURETORS & REPAIR KITS

146-0657 Carburetor Repair Seal Kit Fits Cummins Onan P126G, P128G (7 HP)

This XR Marine carburetor repair seal kit is designed for carburetor maintenance and seal servicing on listed Cummins Onan P126G, P128G, P220G, OL16, OL18, OL20, LX720, LX770, and LX790 engines, using 146-0657 as the primary OEM reference. It provides a targeted service solution when your existing carburetor assembly requires seal replacement rather than a full carburetor replacement. Before ordering, verify the complete engine model designation and specific carburetor service-part requirements on your unit, as similar-looking model codes and part numbers are not automatically interchangeable.

Free shipping on all orders. Lifetime warranty for product quality defects. Normal wear and tear excluded.

Product Specifications

Key product details for identification and comparison.

Product Type Carburetor Repair Seal Kit
Brand XR Marine
Application Brand Cummins Onan
Primary OEM Reference 146-0657
Additional OEM References 146-6100, 146-0479, 146-0414, 146-0496, 146-0650, 146-0478
Listed Engine Models P126G, P128G, P220G, OL16, OL18, OL20, LX720, LX770, LX790
Engine Configuration 4-Stroke (7 HP on listed 1999 entries)

Fitment

The 146-0657 Carburetor Repair Seal Kit from XR Marine fits Cummins Onan P126G, P128G, P220G, OL16, OL18, OL20, LX720, LX770, and LX790 (7 HP) 4-stroke engines in the model-year applications listed below.

Match the full model designation on your engine identification plate against the individual year entries below, and compare your complete OEM part number before ordering. Horsepower or brand name alone cannot confirm fitment; treat similar designations such as P126G versus P216G, P128G versus P218G, and 146-0479 versus 146-0478 as distinct identifiers and confirm the specific carburetor version on your engine.

  • Brand: Cummins Onan | Model: P126G | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: P128G | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: P220G | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: OL16 | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: OL18 | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: OL20 | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: LX720 | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: LX770 | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits
  • Brand: Cummins Onan | Model: LX790 | Power: 7 HP | Year: 1999 | Stroke: 4-Stroke | Note: Carburetor repair seal servicing; carburetor version not specified.
    ✓ Fits

OEM & Part Number References

Use the complete reference number, including its suffix, when comparing parts. Reference numbers do not confirm that every version is interchangeable.

Brand Reference Number & Notes
Cummins Onan 146-0657 (Primary OEM reference)
Cummins Onan 146-6100 (OEM reference)
Cummins Onan 146-0479 (OEM reference; treat as distinct from 146-0478)
Cummins Onan 146-0414 (OEM reference)
Cummins Onan 146-0496 (OEM reference)
Cummins Onan 146-0650 (OEM reference)
Cummins Onan 146-0478 (OEM reference; treat as distinct from 146-0479)

Installation Guide

General installation overview. Follow the service manual for your exact engine and carburetor configuration. Fuel-system work requires the appropriate skills and precautions.

  1. Preparation and Identification: Ensure the engine is shut off and completely cool, disconnect the ignition source, and shut off the fuel supply in a well-ventilated workspace away from open flames. Verify your engine identification plate and compare the supplied seal kit pieces against your carburetor's service manual before beginning disassembly.
  2. Disassembly and Seal Comparison: Note the routing of all fuel lines and linkage connections before removing or opening the carburetor according to factory service instructions. Clean the sealing surfaces carefully without scratching the metal, and compare each new seal and gasket side-by-side with the removed original parts to confirm exact profile and hole alignment.
  3. Reassembly and Leak Inspection: Install only the matching replacement seals from the kit and reassemble the carburetor following the sequence and specifications in your Cummins Onan service manual. Restore the fuel connection and inspect all joints thoroughly for fuel seepage before starting; test-run the engine only under proper cooling and ventilation conditions, and shut down immediately if any fuel leak or abnormal operation occurs.

Before You Order

A careful fitment check helps you choose the right part the first time.

  • Match the full engine model designation on the identification plate.
  • Check the individual year entry and any serial-number or version restrictions.
  • Compare the complete OEM reference number, including its suffix. Horsepower or appearance alone is not enough.
  • Confirm the package contents and the quantity needed for your repair.
  • Do not confuse closely numbered Cummins Onan engine designations: treat P126G and P216G, as well as P128G and P218G, as different models rather than interchangeable applications.
  • Distinguish between part numbers 146-0479 and 146-0478 when cross-referencing your carburetor service parts, and verify the exact carburetor version installed on your engine.

Need help checking fitment? Have your engine identification details, the existing part number and clear photos ready when you contact XR Marine.

Ask XR Marine About Fitment

Why XR Marine

Carburetors are our focus. Fitment comes first.

XR Marine specializes in marine carburetors, carburetor repair kits and the related parts needed for these repairs. We keep our focus on this product line so that product information stays centered on the details that matter: engine applications, complete part-number references and what is included.

Use our individual fitment entries and part references to compare your application, then contact XR Marine if you need help before ordering.

Shipping

Free shipping on all orders. No minimum order value.

For questions about delivery to your destination or delivery timing, contact XR Marine before placing your order.

Contact XR Marine About Shipping

Lifetime Warranty

XR Marine provides lifetime warranty coverage for product quality defects. Normal wear and tear is excluded.

  • Covered: product quality defects.
  • Not covered: normal wear and tear.

Contact XR Marine for warranty assistance. Having your order details and a description of the issue available can help us understand your request.

Contact XR Marine About Warranty

Frequently Asked Questions

Answers to common questions about this product and its application.

Is this product a complete carburetor assembly or a repair seal kit?

This listing is for a carburetor repair seal kit (146-0657 primary reference) from XR Marine, not a complete carburetor assembly. It is intended for carburetor repair and seal servicing on the listed Cummins Onan models.

Can I use this kit on Cummins Onan P216G or P218G models?

Do not assume fitment for P216G or P218G based on similarity in model numbering. P126G and P216G, as well as P128G and P218G, must be treated as different model identifiers. Only P126G, P128G, P220G, OL16, OL18, OL20, LX720, LX770, and LX790 are listed in the fitment records on this page.

Are part numbers 146-0479 and 146-0478 interchangeable?

Both 146-0479 and 146-0478 appear in the reference records associated with this kit, but they should be treated as different part identifiers rather than automatically interchangeable versions. Always check your specific engine's parts catalog and existing carburetor markings before ordering.

Why do the fitment entries state that the carburetor version is not specified?

Cummins Onan engines across the P126G, P128G, P220G, OL-series, and LX-series may use specific carburetor variations depending on exact build specifications. Because the fitment records do not specify the individual carburetor version, you should verify both your engine model plate and the OEM service part number required for your carburetor.

How can I check the exact pieces included in the package?

Because an itemized component list is not specified in the data for this listing, please contact XR Marine before ordering if you need to confirm the exact seals, gaskets, or quantities supplied in the kit.

What shipping and warranty coverage apply to this kit?

All orders include free shipping with no minimum order value. XR Marine also provides a lifetime warranty covering product quality defects, with normal wear and tear excluded.

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