Twin Air Air Filter - 723.18.73
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Product Information
Full details
The Twin Air 723.18.73 air filter is an essential upgrade for Polaris owners seeking maximum engine protection and consistent performance. Designed for off-road enthusiasts, this pre-oiled foam filter utilizes a dual-stage filtration system that effectively captures fine dust and debris while allowing for unrestricted airflow; however, users should note that as a foam filter, it requires a specific cleaning and re-oiling regimen compared to disposable paper alternatives.
All features
| Model Part Number | 723.18.73 |
|---|---|
| Brand | Twin Air |
Extended Product Information
FAQs
Can I use standard engine oil instead of foam filter oil?
No. Foam filter oil is specifically formulated to be tacky and trap fine particles. Standard engine oil is too thin and will migrate, leaving the engine vulnerable.
How often should I clean this filter?
Cleaning frequency depends on your riding environment. In dusty or sandy conditions, check the filter after every ride. In cleaner conditions, every few rides may be sufficient.
Does this filter come pre-oiled?
Yes, the 723.18.73 model is supplied pre-oiled and is ready to install immediately.
Can I dry the filter with compressed air?
It is not recommended. Compressed air can damage the internal structure of the foam or blow holes into it, which ruins its filtration capability.
Is this filter compatible with all Polaris models?
No, it is specific to models designated for this MPN. Please verify your vehicle's specific airbox compatibility before purchase.
Troubleshooting
Engine feels sluggish after a long ride
The outer layer of the filter is likely clogged with debris. Remove, clean, and re-oil the filter.
Filter keeps popping off the intake flange
Ensure the filter is seated properly and that the mounting surface is clean. Check the retaining clip or hardware for proper tension.
Dirt found on the clean side of the intake
The filter may not have been sealed correctly. Ensure the foam edge is properly seated and apply a light bead of filter grease to the sealing ring for a better airtight fit.
Pros and Cons
Pros
- Significantly better filtration efficiency for fine dust than paper filters
- Washable and reusable construction reduces long-term maintenance costs
- Improves engine airflow for better throttle response
- Durable design built specifically for demanding off-road use
Cons
- Requires specialized foam filter oil and cleaning fluid for maintenance
- Not a 'set and forget' part; demands regular cleaning intervals
- Installation can be messy due to the tacky nature of the filter oil
Setup, Compatibility & Care
Installation of the 723.18.73 filter is straightforward: simply remove the airbox cover, extract the old filter, clean any residual dust from the inside of the airbox with a rag, and seat the new Twin Air filter firmly against the intake flange. Ensure the seal is airtight to prevent unfiltered air from bypassing the filter.
To maintain the filter, remove it when it appears dirty. Wash it using a dedicated foam filter cleaner or a mild degreaser, rinse it thoroughly, and let it air dry completely. Once dry, apply a high-quality foam filter oil, massaging it into the foam until the entire surface is evenly saturated but not dripping. Finally, press out the excess oil before re-installing.