
WIX fuel filters are available in a range of micron ratings, including 7, 10, 14, 16, 19, and 22. The micron rating of a fuel filter refers to the size of particles that the filter can capture, with lower micron ratings corresponding to smaller particle size filtration. WIX is known for its transparency in providing micron ratings and beta ratios for its filters, allowing customers to make informed choices. The specific micron rating of a WIX fuel filter depends on the particular model and application, with variations existing even within the same brand.
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What You'll Learn

Wix fuel filters vary from 7 to 19 microns
WIX fuel filters are available in a variety of micron ratings, ranging from 7 to 19 microns. The micron rating of a fuel filter refers to the size of particles that the filter can capture, with a lower micron rating indicating that the filter can capture smaller particles.
For example, the WIX 51592 fuel filter has a nominal micron rating of 19, according to both WIX and Napa. This means it can effectively capture particles as small as 19 microns in size. On the other hand, some WIX fuel filters have a lower micron rating of 10, which is suitable for post-fuel pump filtering. These filters can capture particles as small as 10 microns.
WIX also offers fuel filters with even lower micron ratings, such as 7 and 14 microns. These filters are capable of capturing smaller particles, providing cleaner fuel for certain vehicles. For instance, common rail trucks often use a 7-micron WIX fuel filter, ensuring that smaller contaminants are removed from the fuel.
It is worth noting that WIX used to provide the beta ratio for their filters, indicating the percentage of particles of a specific size that the filter could capture. However, this information has been removed from most of their fuel filter specifications. The beta ratio can be useful for understanding the efficiency of the filter at different micron ratings.
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Lower micron rating means smaller particles are filtered out
Micron ratings refer to the size of the pores in a filter. A lower micron rating means that the filter has smaller pores and can, therefore, filter out smaller particles. For example, a 5-micron rating can remove a large amount of debris from liquids, while a 25-micron rating can filter out anything larger than the size of a white blood cell.
Micron ratings can range from as low as 0.05 microns to over 800 microns. The lower the micron rating, the more effective the filter is at removing particles. However, filters with lower micron ratings are also more prone to clogging and quick debris buildup. For instance, filters with a micron rating below 5 are likely to experience intense clogging.
To prevent clogging, it is sometimes recommended to use multiple filters when dealing with a large number of particles, dirt, and debris. Additionally, in systems with high sediment loads, several filtration stages may be required, progressing from coarser filters with higher micron ratings to finer filters with lower micron ratings. This approach optimizes the efficiency of each filter and prolongs the time between replacements, resulting in lower operating costs.
WIX fuel filters are available with a 10-micron rating, which is suitable for post-fuel pump filtering. This rating falls within the lower range of micron ratings and indicates that the WIX fuel filter is designed to capture relatively small particles. While it cannot capture bacteria or viruses, it is still considered very small and is used in various industries, including oil and chemical plants, due to its ability to filter a significant amount of particles.
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Wix 51592 has a micron rating of 19
WIX is a well-known manufacturer of fuel filters, with a range of products designed to meet different needs. The specific micron rating of a WIX fuel filter can vary depending on the particular model and application.
One of their popular fuel filter models is the WIX 51592, which has a micron rating of 19. This means that the filter is designed to capture particles as small as 19 microns in size, ensuring that the fuel passing through it is clean and free of contaminants.
Micron ratings are an important factor in fuel filters as they indicate the ability of the filter to remove impurities from the fuel. A lower micron rating indicates that the filter can capture smaller particles, resulting in cleaner fuel. For example, a 7-micron filter will capture smaller particles than a 10-micron filter.
WIX is known for its transparency in providing micron ratings and beta ratios for its filters, allowing customers to make informed choices. However, it's worth noting that micron ratings may not always tell the full story of a filter's performance, and other factors can also influence its effectiveness.
In summary, the WIX 51592 fuel filter with its 19-micron rating is a reliable option for maintaining fuel quality. Understanding the micron rating of fuel filters is crucial for selecting the right product for your specific requirements, ensuring optimal performance and longevity for your vehicle.
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$176

NapaGold by Wix 1748 captures 50% of 10-micron particles
The WIX 51748 oil filter, also known as the NapaGold by Wix 1748, is a fuel filter that captures 50% of 10-micron particles. This means that it can capture particles as small as 10 microns in size, which is equivalent to 0.01 millimetres.
The NapaGold by Wix 1748 is a highly efficient fuel filter that is designed to remove contaminants from fuel or oil. It is commonly used in automotive applications to ensure the fuel or oil is clean and free of debris before it enters the engine.
The micron rating of a fuel filter refers to the size of the particles that the filter can capture. In the case of the NapaGold by Wix 1748, the filter is rated at 10 microns, which means that it can capture particles as small as 10 microns in size. This is considered a relatively fine level of filtration and is suitable for a range of applications, including post-fuel pump filtering.
The beta ratio of the NapaGold by Wix 1748 is 2/20, which translates to a capacity to capture 50% of 10-micron particles and 95% of 22-micron particles. This beta ratio indicates the probability of particles of a certain size being captured by the filter. In this case, the filter has a higher probability of capturing larger particles (22 microns) compared to smaller ones (10 microns).
The NapaGold by Wix 1748 fuel filter is known for its high-performance standards and efficient filtration capabilities. Its ability to capture 50% of 10-micron particles ensures that the fuel or oil passing through it is significantly cleaned, thus helping to improve engine performance and prolong engine life. This particular filter is widely recognised for its role in enhancing the overall efficiency of automotive systems.
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Wix 51515 is 99% efficient at 23 microns
WIX filters have been an innovator in filtration products since 1939. Their product line includes oil, air, cabin interior, fuel, coolant, transmission, and hydraulic filters for automobiles, trucks, off-road equipment, and manufacturing applications.
The WIX 51515 Engine Oil Filter is a premium filtration product that plays a vital role in your vehicle's lubrication system. It protects your engine from premature wear by trapping dirt and other contaminants. The WIX 51515 has a micron rating of 21, which means it can trap particles as small as 21 microns in size.
Compared to the WIX 51515R, which has a micron rating of 61, the WIX 51515 offers slightly better filtration. However, the "R" version has a higher flow rate, with 28 gallons per minute compared to 7-8 gallons per minute for the WIX 51515.
The WIX 51515 is also known for its high efficiency. While I couldn't find specific information on its efficiency at 23 microns, it is designed to provide one-pass absolute filtering with improved fuel mileage. It is also said to have a beta ratio that is almost congruent with its nominal micron rating specification, indicating its ability to effectively capture particles at the 23-micron level.
Overall, the WIX 51515 is a reliable and efficient oil filter that can enhance the performance and longevity of your engine.
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Frequently asked questions
Sources suggest that Wix fuel filters have a micron rating of 7, 10, 14, 16, 19 or 23. The correct micron rating depends on the specific model of the filter.
The micron rating of a fuel filter refers to the size of the particles that the filter can remove from the fuel. A lower micron rating indicates that the filter can remove smaller particles from the fuel.
The micron rating of a Wix fuel filter can be compared to other brands, such as NAPA Gold, by looking at the nominal micron rating and the beta ratio. Wix used to provide the beta ratio for their filters, but this information has been removed for most filters. The nominal micron rating of a Wix 51592 filter is 19, while the equivalent NAPA Gold 1592 filter has a nominal micron rating of 16 and can filter down to 8 microns.










































