UNI MN-PYB4 Air Filter MN/PYB4

( Brand: Uni ), ( Type: Multi-stage Competition Air Filter ), ( Manufacturer Part Number: MN/PYB4 ), ( Compatible Year: 1993 1992 1991 1990 1989 1988 1987 ), ( Compatible Model: Trail Boss 250 4x4 ), ( Bundle Description: 1 Pc Genuine Uni Multi-stage Competition Air Filter ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review UNI Mn/pyb4 Multi stage Competition Air Filter Polaris fits TRAIL BOSS FI 250 1987–1993

Introducing the UNI-MIN/PYB4 Multi-Stage Air Filter, specifically designed for the Polaris Trail Boss 250 FI models manufactured between 1987 and 1993. This air filter is a must-have for riders seeking optimal engine performance, improved fuel economy, and enhanced filtration capabilities.

The UNI-MIN/PYB4 is a multi-stage air filter, meaning it utilizes multiple layers of filter media to capture even the smallest contaminants, ensuring clean air enters the engine. The outer layer is a coarse foam filter that traps larger particles such as dust and debris. The inner layer is a fine pleated paper filter that captures microscopic particles, ensuring the engine is protected from harmful impurities.

This air filter is constructed using high-quality materials for durability and longevity. The filter housing is made from reinforced plastic, ensuring it can withstand the rigors of off-road riding. The filter media is made from a high-density, pleated paper that provides excellent filtration efficiency while maintaining good airflow.

Installing the UNI-MIN/PYB4 is a straightforward process. It replaces the original OEM air filter and can be installed in just a few minutes using common hand tools. The filter comes with all necessary mounting hardware and detailed installation instructions to ensure a hassle-free installation.

The UNI-MIN/PYB4 not only enhances engine performance by providing cleaner air, but it also improves fuel economy by reducing the amount of fuel consumed by the engine due to intake system restrictions caused by dirty air filters. Additionally, the multi-stage design of the filter ensures that it can be serviced in the field, allowing riders to continue their adventures without the need for expensive shop visits.

In summary, the UNI-MIN/PYB4 Multi-Stage Air Filter is an essential upgrade for any Polaris Trail Boss 250 FI rider seeking improved engine performance, enhanced filtration capabilities, and increased fuel economy. Its durable construction, multi-stage design, and easy installation make it a top choice for off-road enthusiasts.

Uni Filter MN/PYB4 Multi-Stage Air Filter for 1987-1993 Polaris Trail Boss 250 FI: A Comprehensive Analysis

The Uni Filter MN/PYB4 Multi-Stage Air Filter is a replacement air filter designed specifically for the Polaris Trail Boss 250 FI models produced between 1987 and 1993. This article aims to provide an in-depth analysis of the advantages and disadvantages of using this air filter to help you make an informed decision.

1. Enhanced Engine Protection: The multi-stage design of the Uni Filter ensures that it can trap even the smallest contaminants, thereby reducing the risk of engine damage caused by dust, debris, and other particles.

2. Improved Engine Performance: A clean air filter allows for better airflow into the engine, which can result in improved combustion efficiency and increased power output.

3. Longer Filter Life: The Uni Filter is designed to last longer than conventional paper filters, reducing the frequency of filter replacements.

4. Easy Installation: The air filter is easy to install, making it a convenient choice for DIY enthusiasts or those who prefer not to spend time and money on professional services.

1. Higher Upfront Cost: Compared to conventional paper air filters, the Uni Filter may have a higher upfront cost. However, the longer filter life and improved engine performance can offset this cost over time.

2. Specific Application: The Uni Filter is designed for the Polaris Trail Boss 250 FI models between 1987 and 1993. If you own a different model or year, you may need to consider alternative filter options.

3. Filter Maintenance: While the Uni Filter lasts longer than traditional paper filters, it still requires periodic cleaning or replacement to maintain optimal engine performance.

The Uni Filter MN/PYB4 Multi-Stage Air Filter offers several advantages, including enhanced engine protection, improved engine performance, and longer filter life. However, it also comes with some disadvantages, such as a higher upfront cost and the need for periodic maintenance. Ultimately, the decision to purchase this air filter depends on your budget, preference for maintenance, and the specific requirements of your Polaris Trail Boss 250 FI.

If you prioritize engine protection, improved performance, and are willing to invest in a higher-quality filter with longer life, the Uni Filter MN/PYB4 Multi-Stage Air Filter is a solid choice for your Polaris Trail Boss 250 FI. However, if you're looking for a more budget-friendly option or prefer the convenience of disposable paper filters, you may want to consider alternative filter brands or models.

part # mnpyb4 price

• $33.04

specifications filterblank:

• for models: Fi, 250, Trail, Boss
• for makes: Polaris
• for years: 1987-1993
• brand: Uni
• type: Multi-stage Competition Air Filter
• manufacturer part number: MN/PYB4
• compatible year: 1993 1992 1991 1990 1989 1988 1987
• compatible model: Trail Boss 250 4x4
• bundle description: 1 Pc Genuine Uni Multi-stage Competition Air Filter
• core charge: Free No Core Charge
• fitment type: Direct Replacement

general Filterblank:

• condition: New
• ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Air Filters

shipping Filterblank:

• class: Standard
• type: Fixed
• cost: $0.00
• transit: 4-7 Days
• service: Standard

seller Filterblank:

• # reviews: 17784
• rating: 98.8%

payments Filterblank:

• credit card: Diners-club
• wallet: Paypal
• other

returns Filterblank:

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

offer Filterblank:

• availability: In Stock
• started: February 21, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0

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