UNI NU-4138ST Foam Air Filter ZZ2 NU-413ST

( Brand: Uni ), ( Manufacturer Part Number: NU-4138ST ), ( Type: Air Filter ), ( Country Of Manufacture: United States ), ( Filter Material: Foam ), ( Universal Fitment: No ), ( California Prop 65 Warning: Exempt )

Review UNI Zz2 Honda Foam Air Filter Made In Usa fits 250X CRF250X CRF 2004–2012

Introducing the UNI FOAM Nu-4138 ST ZZ2 Air Filter, specifically designed for Honda CRF 250X models from 2004 to 2012. This high-performance air filter replaces the original paper filter element, improving engine performance and increasing filtration efficiency.

Constructed from UNI's advanced foam material, this air filter offers superior protection against dust, debris, and other contaminants, ensuring cleaner air intake for your engine. The open-cell structure of the foam allows for increased airflow, resulting in improved engine response and power.

The Nu-4138 ST ZZ2 Air Filter features a unique design with a double-layer, oiled foam element. The outer layer acts as a pre-filter, trapping larger particles and extending the life of the inner filter. The inner layer, with its fine foam structure, captures even the smallest contaminants, ensuring optimal engine protection.

This air filter comes with a reusable aluminum intake snap-on, making it easy to install and maintain. Simply wash the filter with warm water and a mild detergent, then let it dry before re-oiling and reinstalling.

The UNI FOAM Nu-4138 ST ZZ2 Air Filter is not only an upgrade for off-road and racing applications but also a must-have for daily street riding, ensuring optimal engine performance and longevity.

This air filter is a direct replacement for your stock paper filter and comes with all necessary hardware for installation. Upgrade your Honda CRF 250X with the UNI FOAM Nu-4138 ST ZZ2 Air Filter and experience the difference in engine performance and filtration efficiency.

Pros and Cons of Buying a Honda CRF 250X 2004-2012 FOAM Air Filter (NU-4138ST ZZ2)

a. Improved Engine Performance: Replacing the stock paper air filter with a foam air filter can increase airflow and engine performance, allowing the engine to breathe more efficiently and potentially increasing horsepower.

b. Better Filtration: Foam air filters offer a higher level of filtration compared to paper filters. This can help protect the engine from dust, debris, and other contaminants, ensuring longer engine life and improved performance.

c. Easy Installation: The NU-4138ST ZZ2 foam air filter is a direct replacement for the stock paper filter on the Honda CRF 250X. Installation is straightforward and typically does not require any modification to the engine or airbox.

d. Cost-Effective: Foam air filters are generally more cost-effective compared to their paper counterparts. They can be washed and reused multiple times, making them a more budget-friendly option for off-road enthusiasts.

a. Increased Maintenance: Foam air filters require more frequent maintenance compared to paper filters. They need to be washed and oiled regularly to maintain optimal performance and filtration efficiency.

b. Potential for Damage: Foam air filters can be more fragile than paper filters. They may be more susceptible to damage during installation or removal, which could potentially lead to engine damage if not installed correctly.

c. Oil Leaks: Using oil during the cleaning process of foam air filters can lead to potential oil leaks if not installed properly or if the filter is not sealed correctly. This could result in a messy and time-consuming cleanup process.

d. Higher Upfront Cost: While foam air filters are more cost-effective in the long run due to their reusability, they may require a higher upfront investment compared to paper filters.

The decision to buy a Honda CRF 250X 2004-2012 foam air filter (NU-4138ST ZZ2) depends on the rider's preferences and priorities. If you value improved engine performance, better filtration, and a cost-effective solution, a foam air filter may be the right choice for you. However, if you prefer a low-maintenance option and are not concerned about the potential upfront cost, a paper air filter may be more suitable. Ultimately, the choice between a foam and paper air filter comes down to personal preference and priorities.

If you are considering purchasing a Honda CRF 250X 2004-2012 foam air filter (NU-4138ST ZZ2), it is recommended that you thoroughly research the installation process and maintenance requirements. Proper installation and maintenance are crucial for ensuring optimal performance and engine protection. Additionally, consider the potential upfront cost and your personal preferences and priorities to help make an informed decision.

Details:

New Uni air filter CRF250X 2004 to 2016 And Crf450x 2005 2017.

part #: nu4138st prices

• $32.80-$53.10

specifications scoofilters:

• for models: 250x, Crf250x, Crf
• for makes: Honda
• for years: 2004-2012
• brand: Uni
• mpn: Nu-4138st
• type: Air Filter
• country of manufacture: United States
• filter material: Foam
• universal fitment: No
• california prop 65 warning: Exempt

shipping scoofilters:

• cost: $4.57
• service: USPS Ground Advantage
• carrier: USPS
• transit: 5-11 Days
• type: Calculated
• class: Standard

general scoofilters:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Air Filters

returns scoofilters:

• policy: No Returns

seller scoofilters:

• rating: 100.0%
• # reviews: 1161
• city: Chicago, Illinois

offer scoofilters:

• quantity: 1
• availability: In Stock
• started: June 16, 2025
• options: Ship-to-home
• sold: 0

payments scoofilters:

• other
• credit card: Visa
• wallet: Apple-pay

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