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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
This carburetor repair kit is designed for Nikki carburetors used on Onan P-series engines, including the P216G, P218G, P220G, and P224G models. The kit provides the necessary components to rebuild your carburetor and restore it to optimal function.
This kit is a direct replacement for Onan part numbers 146-0657 and 146-0650.
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand | Part Number | Notes |
---|---|---|
Onan | 146-0657 | Supersedes 146-0650 |
Onan | 146-0650 | Superseded by 146-0657 |
Confirm your engine model/year in the table below.
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 |
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 |
Specification | Value |
---|---|
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 |
Note: The accelerator pump kit, if needed, is sold separately as part number 146-0649/146-0658.
Q: How do I confirm this kit fits my carburetor?
A: This kit fits Nikki-branded carburetors only. The most critical step is to visually compare the large bowl/cover gasket with your original part. The gasket in this kit has one corner that is shaped differently from the other three. If the corners of your old gasket are all identical, this kit will not fit, and you should check repair kit 146-0356 instead.
Q: Will this kit work for my Onan generator engine?
A: No, this kit is not intended for generator set (genset) applications. It is designed for the specific P-series, OL-series, and industrial engines listed in the compatibility table.
Q: What is the difference between this kit (146-0657) and kit 146-0437?
A: This kit (146-0657) contains the same float, float valve, and float pin found in kit #146-0437. However, it also includes additional essential items like the main air horn gasket, making it a more comprehensive kit for a full rebuild.
Q: Is the accelerator pump included?
A: No, the accelerator pump and its related components are not included. If your carburetor has an accelerator pump that needs service, that kit is sold separately as part number 146-0649 or 146-0658.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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