Mercedes Mullins
OMC fuel water filters are used to separate water from the fuel in engines. They are considered essential by many boat owners, who believe that every boat needs a fuel water separator. OMC filters are available in 10-micron options, which should be changed at least annually. However, OMC filters are harder to find and less standardised than other brands, such as Yamaha or Mercury. Owners of OMC filters have also reported issues with clogging. Alternatives to OMC filters include Racor, Sierra, Mallory, Bombardier, and NAPA.
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What You'll Learn
OMC fuel water filter alternatives
OMC fuel filters are unique to OMC, with different thread sizes than other brands. This can make it difficult to find compatible filters, especially if you are in a rush. However, there are alternative fuel water filters available on the market that can be used with OMC engines.
One option is to replace the base with a Merc or Sierra style, as suggested by a user on Bayliner Owners Club. This will allow you to use more commonly-sized thread cartridges. Sierra filters are a good choice for OMC engines, as they are inexpensive and effective. They are available in 10-micron filters, which are recommended for high-performance fuel-injected engines to eliminate harmful contaminants and emulsified water. Sierra filters can be purchased from West Marine, but they may take a while to arrive.
Another option is to use Racor fuel filters, which are now available under the brand names GLM, Sierra, and Mallory. Racor filters are more expensive than the Sierras, but they are superior in terms of water separation as they can be drained without removing the filter. They can be purchased from GLM.
NAPA also makes replacement filters for OMC and Merc bases, which are highly recommended by customers. They are available with or without a drain and are very affordable. NAPA filters can be purchased individually or in packs of 12.
Finally, if you are using ethanol gas, you may want to consider Yamaha or Mercury filters and brackets, as they are more standardized and interchangeable.
When choosing an alternative fuel water filter for your OMC engine, it is important to consider factors such as price, availability, ease of use, and effectiveness in water separation and contaminant removal.
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OEM filter part numbers
OMC fuel filters are known to be different from other filters, with a larger threaded hole. This makes them harder to find and less interchangeable.
Some OEM filter part numbers for OMC fuel filters include:
- Johnson/Evinrude/OMC OEM Water Separating Fuel Filter Cannister 502905; 0502905
- Sierra International Sierra 18-7919
- BANGTE 5012363 Replace for OEM Evinrude OMC Johnson BRP Fuel Filter/Water Separator Kit 10 Micron-501236300
The OEM filter part number for the OMC carbureted 5.7 is 124398. The spin-on filters on the engine are 10-micron filters and have the OMC part number 502906.
There are alternative options for fuel filters, such as the Sierra water-separating filters, which are known to be cheaper and effective. However, the Racor style of fuel filters is considered superior in terms of water separation, as they can be drained without removing the filter.
It is important to note that some users have reported difficulties in finding OMC-compatible fuel filters at certain stores, such as NAPA and West Marine.
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Sierra water separating filters
Sierra International offers a fuel water separator kit, the Sierra 18-7775-1, which is a 3/8" fuel and water separator. It is available on Amazon and has received mixed reviews. Some customers have found the product to be of good quality, easy to install, and a good deal for a quality name-brand part. However, others have reported issues with leaking, which has caused water to flood their gas tanks.
Sierra also offers a 10-micron water-separating fuel filter that can be used with OMC engines. This filter can be screwed into the OMC filter brackets on boats, providing an alternative to the stock OMC filters. Sierra's 10-micron filters are considered a good option for the price, although they may not be as effective as the Racor filters in dealing with water problems.
The Sierra water separating filters are a conventional choice for fuel water separation, and they are compatible with OMC I/O engines. They are available at a lower cost than the Racor filters, but they do not offer the same level of convenience when it comes to draining without removing the filter.
When choosing a fuel water separator, it is important to consider the specific needs of your boat and engine. While the Sierra filters may be a suitable option for some, the Racor filters might be preferred in cases where water contamination is a more frequent issue. Additionally, the availability and standardization of certain filter brands, such as Yamaha or Mercury, may also influence your decision.
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Racor fuel water separator
While it is not explicitly mentioned that you have to use an OMC fuel water 1 filter, it is important to ensure that your engine's fuel is filtered and any water is removed. OMC fuel water separators are available as replacements or alternatives, such as the SeaSense OMC Fuel/Water Replacement Filter offered by Amazon.com.
If you are specifically looking for a Racor fuel water separator as an alternative to an OMC one, it is important to note that the thread size is not the same. Racor fuel water separators are known for their superior ability to deal with water problems. They can be drained without removing the filter, which is especially useful if you are finding water in the gas when you change the filter. However, they are more expensive than conventional filters and have more potential leak points.
It is worth mentioning that some users have reported success with the Sierra 10-micron water-separating filters on their OMCs without any issues. Additionally, NAPA makes replacement filters for OMC and Merc bases, which are more affordable than Racor filters and can be purchased with or without a drain.
When choosing a fuel water separator, it is important to consider factors such as compatibility, effectiveness in water separation, ease of drainage, leak potential, and cost.
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NAPA replacement filters
NAPA Auto Parts offers a wide range of replacement filters for vehicles, including cars, trucks, SUVs, motorcycles, and boats. Their selection includes air, oil, and fuel filters, which are essential for maintaining engine performance and protecting against contaminants. NAPA's fuel filters, in particular, help ensure peace of mind on the road by preventing fuel system issues.
NAPA's fuel filters are designed to stop water from passing through while allowing gas to pass, making them a suitable replacement for OMC fuel/water filters. While OMC fuel filters are unique and harder to find, NAPA provides a compatible alternative. One customer reported that a NAPA filter was the only brand they could find to match the OEM for their 1985 OMC engine.
NAPA Gold filters are highly regarded by boaters, with one Yamaha boat owner commenting that they are "some of the best filters made bar none." NAPA filters are also significantly more affordable than other options, such as Racor filters, which are known for their superior water separation capabilities. However, NAPA filters may not be as readily available as other brands, and their micron rating may not always be known to store staff.
In addition to fuel filters, NAPA offers air filters that protect engines from airborne contaminants like dust, dirt, pollen, and bugs. NAPA recommends replacing air filters every 15,000 to 20,000 miles, or more frequently when driving in dusty conditions. NAPA's oil filters are also important for maintaining engine health and performance, as they help keep the oil free of contaminants that can cause damage or reduced efficiency.
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Frequently asked questions
It filters your engine's fuel and removes any water from the fuel.
Some alternatives include the Sierra water separating filters, Racor, and Yamaha or Mercury filters.
You can buy the OMC fuel water 1 filter on Amazon or from NAPA.
You need a 10-micron filter.
