YAMAHA USPT621833 Airbox Box Unit Air Filter A408

( Manufacturer Part Number: USPT621833 ), ( Unit Type: Unit ), ( Sub-type: Air Filters ), ( Type: Air Intake Fuel Delivery ), ( Intended Use: Replacement Part )

Review YAMAHA #a408 Airbox Air Box Filter Unit Oem Fast Ship fits DT400 1977

Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit

The Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit is an essential component of the engine's intake system designed specifically for the Yamaha DT400 motorcycle manufactured in 1977. This air filter unit is engineered to protect the engine from foreign particles, ensuring optimal engine performance and longevity.

The air filter unit is constructed from high-quality materials, including a durable and sturdy polypropylene (PP) plastic airbox and a pleated filter element. The PP airbox is designed to be resilient against impacts and features a gasketed seal to maintain a tight fit against the motorcycle's frame. This ensures an efficient seal, minimizing air leaks and maintaining consistent airflow to the engine.

The pleated filter element is made from a synthetic material, offering excellent filtration capabilities while maintaining a low restriction to airflow. The filter's pleated design increases the filter's surface area, allowing it to capture more dirt and debris, keeping the engine's intake system clean and free from contaminants.

The air filter unit is easy to install and maintain. The design allows for quick and easy access to the filter element, allowing riders to replace the filter element as needed to ensure optimal engine performance. The filter element's replacement process is straightforward, ensuring that the installation process is hassle-free and can be completed quickly.

In summary, the Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit is a crucial component of the DT400 motorcycle's engine system. Its durable construction, effective filtration capabilities, and easy installation and maintenance make it an essential purchase for any Yamaha DT400 owner looking to maintain their motorcycle's performance and longevity.

Pros and Cons of Buying Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit

The Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit is a crucial part of the engine air intake system. This component ensures that the engine receives clean air for combustion. In this analysis, we will discuss the pros and cons of purchasing this air filter unit.

1. OEM Part: This air filter unit is an original equipment manufacturer (OEM) part, which means it is designed and manufactured by Yamaha. Using an OEM part guarantees a perfect fit and optimal performance.

2. Improved Engine Performance: A clean air filter allows the engine to breathe efficiently, leading to improved engine performance, increased power, and better fuel economy.

3. Longer Engine Life: A clean air filter prevents impurities from entering the engine, reducing the risk of engine damage and extending the life of the engine.

4. Easy Installation: The air filter unit is relatively easy to install, making it a DIY-friendly project for many motorcycle enthusiasts.

5. Superior Filtration: The air filter unit provides superior filtration, trapping harmful particles as small as 0.3 microns.

1. Cost: Original equipment manufacturer air filter units can be more expensive compared to aftermarket alternatives.

2. Frequent Replacement: Depending on the riding conditions, the air filter unit may need to be replaced more frequently than other components.

3. Availability: This specific air filter unit might not be readily available at local motorcycle shops, and ordering online may take some time.

The Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit is a crucial investment for maintaining the overall health and performance of your Yamaha motorcycle. While it may come with a higher cost and the need for more frequent replacement, the benefits, such as improved engine performance, extended engine life, and superior filtration, far outweigh the drawbacks.

If you are looking to replace the air filter unit on your Yamaha motorcycle, it is highly recommended to invest in an OEM part such as the Yamaha USPT621833 A408 DT400 1977 Airbox Air Filter Unit. While the upfront cost may be higher, the benefits it provides in terms of engine performance, engine life, and filtration make it a worthwhile investment for any serious motorcycle enthusiast.

Details:

The lid only has one screw missing two. No cracks or breaks. Good usable oem parts in working condition.

part #: uspt621833 prices

• $30.00-$115.00

specifications scoofilters:

• for models: Dt400
• for makes: Yamaha
• for years: 1977
• mpn: Uspt621833
• unit type: Unit
• sub-type: Air Filters
• type: Air Intake Fuel Delivery
• intended use: Replacement Part

payments scoofilters:

• credit card: Mastercard
• other
• wallet: Paypal

offer scoofilters:

• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: February 12, 2026

shipping scoofilters:

• class: Expedited
• transit: 5-9 Days
• cost: $0.00
• service: USPS Priority Mail
• carrier: USPS
• type: Calculated

general scoofilters:

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

returns scoofilters:

• policy: No Returns

seller scoofilters:

• city: Ogden, Utah
• # reviews: 3154
• rating: 99.6%

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