Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G (Replaces Onan 146-0657)
Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G (Replaces Onan 146-0657) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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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Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G (Repla...
Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G (Replaces Onan 146-0657) is backordered and will ship as soon as it is back in stock.
Product Details
This genuine Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G Engines (Replaces 146-0657) is designed for Nikki carburetors on Onan P-series engines. The kit contains all necessary components to rebuild and restore proper carburetor function for models including P216G, P218G, P220G, and P224G.
This kit is a direct replacement for Onan part numbers 146-0657 and its superseded predecessor, 146-0650.
- Manufactured in an ISO9002 certified facility to ensure quality and reliability.
- Includes all essential gaskets, seals, and float components for a standard overhaul.
- Please note: This kit is not designed for use in generator set (genset) applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Onan | 146-0650 | 146-0657 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is confirmed to fit a wide range of Onan engines. Please verify your specific model and series, as some engines like the B48M have only partial compatibility.
Fitment for Miller engine models is also listed, which use Onan-powered systems.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Onan | P216G | 16 | 4-Stroke | 146-0657 | Replaces 146-0650 |
| Onan | P218G | 18 | 4-Stroke | 146-0657 | Replaces 146-0650 |
| Onan | P220G | 20 | 4-Stroke | 146-0657 | Replaces 146-0650 |
| Onan | P224G | 24 | 4-Stroke | 146-0657 | Replaces 146-0650, Spec B-G only |
| Onan | OL16 | 16 | 4-Stroke | 146-0657 | Power generator application |
| Onan | OL18 | 18 | 4-Stroke | 146-0657 | Power generator application |
| Onan | OL20 | 20 | 4-Stroke | 146-0657 | Power generator application |
| Onan | P126G | 4-Stroke | 146-0657 | Power generator application | |
| Onan | P128G | 4-Stroke | 146-0657 | Power generator application | |
| Onan | B48G-GA020 | 4-Stroke | 146-0657 | Industrial engine | |
| Onan | B48G-GA19.9 | 4-Stroke | 146-0657 | Industrial engine | |
| Onan | B48M | 4-Stroke | 146-0657 | Partial compatibility; verify specifications | |
| Miller | LX720 | 4-Stroke | 146-0657 | ||
| Miller | LX770 | 4-Stroke | 146-0657 | ||
| Miller | LX790 | 4-Stroke | 146-0657 |
Compatible Carburetor Models
This repair kit is specifically designed for the following Nikki carburetor models:
| Carburetor Model | Notes |
|---|---|
| 146-0414 | Nikki carburetor |
| 146-0479 | Nikki carburetor |
| 146-0496 | Nikki carburetor |
| 146-6100 | Nikki carburetor |
| 146-0388 | Nikki carburetor |
| 146-0389 | Nikki carburetor |
| 146-0412 | Nikki carburetor |
| 146-0428 | Nikki carburetor |
| 146-0430 | Nikki carburetor |
| 146-0478 | Nikki carburetor |
| 146-0659 | Nikki carburetor |
| 146-0697 | Nikki carburetor |
| 146-0698 | Nikki carburetor |
| 146-0700 | Nikki carburetor |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Compatible Carburetors
- Nikki-branded carburetors (146-0414, 146-0479, 146-0496, 146-6100, and others)
- Engine Compatibility
- P216G, P218G, P220G, P224G, B48G, OL16, OL18, OL20, and select industrial engines
- Manufacturing Standard
- ISO9002 certified factory
- Package Type
- OEM service parts kit
- Other Technical Attributes
- Not compatible with gen-set applications
What’s in the Box
- 1 x Mounting Gasket
- 1 x Air Horn Gasket
- 4 x Set Screws
- 1 x Float Valve
- 1 x Float Pin
- 1 x Float Assembly
- 1 x Main Plug Gasket
- 1 x O-Ring (carb to air cleaner)
Installation Notes
- Ensure this kit is for Nikki-branded carburetors only. Do not attempt to use on other carburetor brands.
- Verify that your application is not a generator set (genset), as this kit is not intended for such use.
- Carefully compare your old carburetor bowl gasket with the one supplied in this kit. Onan used two different gasket styles; the gasket in this kit has one corner that is shaped differently from the other three.
- If your old gasket does not match the one pictured and described, you may need repair kit 146-0356 instead.
Troubleshooting & FAQ
Is this repair kit suitable for Onan generators?
No, this kit is specifically noted as not being compatible with generator set (genset) applications, even if the engine model appears on the list. Use for gensets is not recommended.
What is the difference between this kit (146-0657) and kit 146-0356?
The primary difference is the shape of the large cover/bowl gasket. Two different gaskets were used on Nikki carburetors. You must verify which one you have. The gasket in this kit features one corner with a unique shape compared to the other three.
Does this kit include the accelerator pump?
No, the accelerator pump kit is not included and must be purchased separately if needed. The correct part number is 146-0649 or 146-0658.
How do I know if this will fit my specific Onan engine?
While this kit fits a wide range of models, fitment depends on the carburetor brand (Nikki only) and the correct bowl gasket shape. Always verify by comparing the parts in the photos to your existing parts before ordering.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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