Briggs & Stratton has long been a trusted name in small engines, powering everything from lawnmowers and pressure washers to generators and snow blowers. But even the most reliable engines need a little maintenance from time to time. Whether you're a DIY mechanic or a homeowner looking to extend the life of your equipment, having the right replacement parts on hand is essential.

Here are a few of the most useful Briggs & Stratton replacement parts that every small engine owner should consider keeping in their toolbox.

1. Air Filters

Why it’s useful:
Air filters are the unsung heroes of engine longevity. They trap dust, dirt, and debris that can choke your engine and reduce performance. A clean air filter not only improves fuel efficiency but also prolongs engine life.

Popular Models in 2025:

• 491588S (fits many classic vertical engines)
  
  
• 593260 (for newer Intek and Professional Series engines)
  
  

Pro Tip: Replace your air filter every 25 hours of use or at the start of every mowing season.

2. Spark Plugs

Why it’s useful:
Spark plugs are small but mighty. They ignite the air-fuel mixture inside your engine. A worn or fouled spark plug can lead to poor starts, rough running, or increased fuel consumption.

Popular Models in 2025:

• RJ19LM and J19LM (common for many lawnmowers and generators)
  
  
• 491055S (fits several Vanguard and Intek engines)
  
  

Pro Tip: Change spark plugs annually or after every 100 hours of use for optimal performance.

3. Carburetor Assemblies

Why it’s useful:
The carburetor mixes air and fuel before combustion. Over time, old gas or debris can clog jets and passages, leading to hard starts or poor running. While carburetor rebuild kits are available, full replacements have become more affordable and convenient in 2025.

Popular Models in 2025:

• 799866 (for 550e and 550ex series)
  
  
• 796608 (for Intek OHV engines)
  
  

Pro Tip: Use fuel stabilizer to prevent gumming and extend carburetor life.

4. Fuel Filters

Why it’s useful:
Fuel filters prevent dirt and debris from entering the engine through your fuel system. A clogged filter can starve your engine of fuel and cause stalling or power loss.

Popular Models in 2025:

• 691035 and 493629 (fit many larger engines and riding mowers)
  
  

Pro Tip: Inspect the filter every season. If you notice reduced engine power or sputtering, it might be time for a replacement.

5. Oil Filters

Why it’s useful:
An oil filter keeps your engine oil clean by capturing metal shavings, dirt, and contaminants. Clean oil is critical to preventing wear and overheating.

Popular Models in 2025:

• 696854 (used in many Vanguard V-twin engines)
  
  
• 795990 (for Intek and Professional Series V-twin engines)
  
  

Pro Tip: Change the oil filter every time you do an oil change—typically every 50 hours or once per season.

Briggs & Stratton engines are built to last, but like any machine, they thrive on regular maintenance. Stocking up on these essential replacement parts ensures you're always ready to keep your equipment running smoothly—whether you're mowing your lawn, powering your home, or clearing a snowy driveway.

In 2025, availability is better than ever, with many parts compatible across multiple models. Be sure to check your engine's model number before ordering, and consider keeping these essentials on hand for stress-free operation all season long.