UNI NU-2309 Foam Air Filter

( Brand: Uni ), ( Manufacturer Part Number: NU-2309 ), ( Type: Air Filter ), ( Material: Foam )

Review UNI Air Filter Kawasaki Foam fits Z1 900 1973–1975

Introducing the UNI Nu-2309 air filter, specifically designed for Kawasaki Z1 motorcycles manufactured between 1973 and 1975. This premium foam air filter is engineered to deliver exceptional performance, ensuring your vintage motorcycle runs smoothly and efficiently.

The UNI Nu-2309 air filter is constructed from high-quality, pleated foam material. This open-cell foam structure offers an extensive filtering surface area, allowing it to capture even the tiniest of particles, including dust, pollen, and other airborne contaminants. The foam material also provides excellent air flow, ensuring optimal engine performance.

This air filter is designed as an OEM replacement for the original equipment filter on your Kawasaki Z1. It fits securely into the existing air box, maintaining the original sealing contact for a perfect fit. The UNI Nu-2309 air filter is easy to install, requiring no modifications to your motorcycle.

The UNI Nu-2309 air filter is not only effective but also durable. The foam material is resistant to oil, making it an ideal choice for motorcycles with carbureted engines. The filter can be cleaned and reused multiple times, saving you the cost of purchasing disposable filters.

Maintaining the UNI Nu-2309 air filter is straightforward. Simply remove the filter from the air box, wash it with warm water and mild detergent, rinse it thoroughly, and let it dry completely before reinstalling it. This filter is designed to last, providing you with unmatched protection and performance for your Kawasaki Z1.

Investing in a UNI Nu-2309 air filter for your Kawasaki Z1 is an investment in the longevity and optimal performance of your motorcycle. This high-quality foam air filter not only filters the air entering your engine but also protects it from damaging contaminants, ensuring your motorcycle runs smoothly and efficiently. Upgrade your motorcycle's air filtration system today with the UNI Nu-2309 air filter.

Pros and Cons of Buying a Uni-Filter UNI-2309 Air Filter for Kawasaki Z1 900 (1973-1975)

The Uni-Filter UNI-2309 air filter is a foam type replacement filter designed for the Kawasaki Z1 900 motorcycles manufactured between 1973 and 1975. This air filter is known for its high filtration capacity and durability. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this air filter.

1. Superior Filtration: The Uni-Filter UNI-2309 offers excellent filtration capabilities. The foam material can trap even the smallest particles, ensuring cleaner engine air and better engine performance.

2. Longer Service Intervals: Foam air filters require less frequent replacement compared to paper filters. In some cases, they can last up to 10,000 miles or more before needing to be changed.

3. Easy Installation: Installing a foam air filter is generally easier than installing a paper filter. The foam material can be gently compressed into the filter housing, making the installation process quicker and simpler.

4. Cost-Effective: Over the long term, foam air filters like the Uni-Filter UNI-2309 can save money, as they require fewer replacements compared to paper filters.

5. Improved Engine Protection: By trapping more contaminants, a high-quality foam air filter can help protect the engine from wear and damage.

1. Initial Cost: The Uni-Filter UNI-2309 may have a higher upfront cost compared to paper air filters. However, the extended service intervals and improved engine protection may offset this expense over time.

2. Cleaning: Foam air filters need to be cleaned periodically to maintain their filtration capacity. The cleaning process can be messy and time-consuming, but it is essential for ensuring the filter continues to function effectively.

3. Potential for Oil Contamination: If the foam filter becomes saturated with engine oil, it can reduce the filter's effectiveness and potentially cause damage to the engine. Regular oil changes and proper filter maintenance can help mitigate this concern.

The Uni-Filter UNI-2309 air filter offers several advantages for Kawasaki Z1 900 owners, including superior filtration, longer service intervals, easier installation, and cost-effectiveness. However, it also comes with some drawbacks, such as a higher initial cost, the need for periodic cleaning, and the potential for oil contamination. Ultimately, the decision to purchase this air filter depends on your priorities, budget, and maintenance preferences. If you value high-quality filtration and extended service intervals, the Uni-Filter UNI-2309 may be an excellent investment for your motorcycle.

Details:

Orders placed without proper verification that result in incorrect fitment are on you. Package Includes: Exactly as shown in photos. Mistakes happen, parts vary, and if you re buying something for your machine, you should be capable of verifying it yourself using part numbers, manufacturer resources, or basic online research. Price / Shipping: $30FREE Shipping.

Type: Foam air filter. Key Features: Brand: UNI. UNI NU-2309 Air Filter Kawasaki Z1 900 1973 1975 Foam. Condition: New.

Yes, fitment may be listed.: Genuine UNI foam air filter, part number NU-2309.High-quality oiled filter designed as a direct replacement for compatible Kawasaki Z1 model's. Material: Oiled foam.

part #: nu2309 prices

• $27.06-$43.51

specifications scoofilters:

• for models: Z1, 900
• for makes: Kawasaki
• for years: 1973-1975
• brand: Uni
• mpn: Nu-2309
• type: Air Filter
• material: Foam

offer scoofilters:

• availability: In Stock
• best offers: True
• started: April 3, 2026
• options: Ship-to-home
• sold: 0
• quantity: 1

returns scoofilters:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

seller scoofilters:

• # reviews: 454
• city: Vallejo, California
• rating: 100.0%

payments scoofilters:

• other
• credit card: Discover
• wallet: Google-pay

shipping scoofilters:

• cost: $0.00
• type: Calculated
• class: Expedited
• transit: 5-11 Days
• service: USPS Priority Mail Padded Flat Rate Envelope
• carrier: USPS

general scoofilters:

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

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