Air Box Filter Foam Seal for Polaris Pro RMK 850 2019-2021 Snowmobile

Air Box Filter/Foam Seal for Polaris Pro RMK 850

This air box filter and foam seal assembly services the intake system on select 2019-2021 Polaris Pro RMK 850 snowmobiles, filtering intake air and sealing the air box so snow dust and debris stay out of the engine.

Overview

This air box filter and foam seal is made to fit the Polaris Pro RMK 850 mountain sled intake system. The filter media traps fine particles while the foam seal closes the air box joints, keeping the intake sealed during aggressive riding. It is a straightforward replacement for anyone servicing a 2019-2021 Polaris Pro RMK 850 or replacing a worn, compressed seal.

Built For Performance

• Foam filter media traps snow dust, belt dust, and fine grit before the engine
• Sealing foam matches the air box mating surface for a tight, vibration-resistant fit
• Keeps the intake tract sealed under deep snow and sustained high RPM riding
• Cleanable and reoilable design supports extended service intervals
• Direct-fit shape for the Polaris Pro RMK 850 air box with no trimming needed

Fits These Machines

• for Polaris Pro RMK 850, 2019
• for Polaris Pro RMK 850, 2020
• for Polaris Pro RMK 850, 2021

On-The-Job Use

• Backcountry powder riding where intake snow ingestion is a constant concern
• Spring conditions with wet, gritty snow that finds its way into the air box
• Preseason intake maintenance and filter replacement
• Sealing the air box on sleds stored or trailered between rides

Specs At A Glance

Good To Know

Q: Can the filter be reused after cleaning? A: Yes, foam filter media can be cleaned and reoiled as part of routine service. Replace it if the foam is torn, crumbling, or no longer holds its shape.

Q: Will this seal fit all 2019-2021 Polaris Pro RMK 850 sleds? A: It is listed for those model years, but trim levels and running changes can affect air box fitment. Check your serial number and existing air box before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.