Twin Air Air Filter - 158003
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Product Information
Full details
The Twin Air 158003 air filter is designed for owners of the 1983 Montesa 250 seeking to optimize engine performance through improved airflow and superior filtration. By utilizing a compact, dual-stage foam construction, this filter increases internal airbox capacity to boost overall engine power while providing robust protection against contaminants. While this filter offers elite-level filtration and airflow, users should note that it requires a dedicated cleaning and oiling regimen to maintain its performance over time.
All features
| Model Part Number | 158003 |
|---|---|
| Brand | Twin Air |
Extended Product Information
FAQs
Do I need to apply grease to the sealing ring?
No, the filter features a thick, greaseless sealing ring designed to seal effectively without external lubricants.
Can I use gasoline to clean the filter?
Yes, the exclusively formulated adhesive used by Twin Air is designed to withstand harsh solvents and gasoline.
Why is this filter smaller than the stock one?
The smaller profile is an intentional design choice to increase the volume of air inside the airbox, leading to better engine performance.
How often should I clean the filter?
Maintenance frequency depends on riding conditions. In dusty or sandy environments, clean the filter after every ride.
Can I use this on a Montesa model other than the 1983 250?
This specific part number (158003) is engineered specifically for the 1983 Montesa 250 and may not fit other models.
Troubleshooting
Engine feels sluggish after installation
Check that the filter is not over-oiled, which can restrict airflow. Ensure the filter is seated properly against the airbox.
Visible dirt inside the airbox after riding
Verify the sealing ring is flush against the intake surface and check for any rips or tears in the foam layers.
Pros and Cons
Pros
- Increases engine power via improved airflow
- Effective dual-layer filtration captures both sand and fine dust
- Durable construction handles repeated washings
- Greaseless seal ensures easy and clean installation
Cons
- Requires proper oiling to function as intended
- Demands periodic maintenance to remain effective
- Specific fitment limits application to designated model year
Setup, Compatibility & Care
To install, ensure the airbox is completely clean and free of debris. Simply seat the flat, greaseless ring against the intake aperture of the 1983 Montesa 250 airbox. No grease is required on the ring. For care, remove the filter after heavy use and clean it using approved air filter cleaner or a mild solvent. Always allow the filter to dry completely before applying a fresh coat of high-quality foam air filter oil. Ensure the oil is evenly distributed across the foam before reinstalling, and check the seal for any gaps.