Air Fitler Cover & Air Filter Tune Up Kits For Yard Machines 21" 675 EXI 163cc Lawn Mower

What It Is

This kit includes a replacement air filter cover and air filter for Yard Machines 21" 675 EXI 163cc lawn mowers. It’s designed for routine maintenance to keep debris out of the engine and maintain proper air flow.

Fitment & Compatibility

Before buying, confirm your mower has a 21-inch deck and a 163cc 675 EXI engine (common on Yard Machines push mowers from the 2010s onward). The kit replaces OEM part numbers 751-05942 (cover) and 490-600-M057 (filter). Measure the existing filter cover’s mounting tabs and screw spacing—these are specific to this engine series. Aftermarket kits may have slightly different plastic molding; test fit before tightening. Not compatible with non-EXI engines or other brands.

Key Things to Know

• Quality: The aftermarket cover is durable ABS plastic, but the seal may be less snug than OEM—check for gaps after installation.
• Installation: Easy, 5-minute job: remove old cover, swap filter, snap new cover on. No tools needed.
• Gotcha: The filter included is a foam pre-filter, not a paper element. It requires periodic cleaning with soap and water (re-oil lightly). Don’t run without it.
• Gotcha: If your old cover was cracked from heat or impact, the new one may still fit loose if the mower’s mounting tabs are warped.

Should You Buy It

If you own a Yard Machines 21" 675 EXI 163cc mower and need a quick, low-cost air filter and cover replacement, this kit works fine for basic maintenance. It’s not OEM, but at $15.99 it’s a solid value for keeping the engine breathing clean. Skip it if you want a paper filter or need a perfect factory fit.