Briggs & Stratton 591583 with Pre-Filter

Keep your engine running clean and protected with this genuine OEM Briggs & Stratton air filter and pre-filter combo. Designed for select 9.0 and 12.5 HP 21 series OHV engines, this kit helps extend engine life by preventing dirt and debris from entering the carburetor.

✔ OEM Briggs & Stratton quality
✔ Includes both air filter + pre-filter
✔ Exact fit — no guesswork

What’s Included:

• (1) Air Filter — 591583
• (1) Pre-Filter — 798911

Fits select Briggs & Stratton engines including:

• 21 Series Engines
  

Not sure if this fits your engine? Use our Engine Model Lookup Tool or check your model number stamped on the valve cover.

Why this matters:

Dirty air filters are one of the most common causes of:

• Hard starting
• Loss of power
• Excess fuel consumption
• Black smoke

Replacing both the air filter and pre-filter together ensures maximum airflow and engine protection.