Briggs & Stratton Starter Pre‑Filter - 697015

Product Details & Features

This genuine Briggs & Stratton pre‑filter (697015) — also referenced as part 4215 — is an essential first‑stage protection component for your engine’s air intake system. Made to original equipment manufacturer (OEM) standards, it helps keep dirt, dust and coarse debris away from the main air filter and engine internals for smoother, more reliable performance and longer filter life. 

The pre‑filter is a foam wrap‑style filter that fits over the air cleaner cartridge on compatible Briggs & Stratton OHV engines, particularly 28 cu in and 31 cu in models. Its open‑cell foam construction traps larger airborne particles before they reach the primary filter, helping reduce clogging and extending service intervals for both filters. 

Key Benefits:

• First‑Stage Protection: Captures larger dust and debris before they reach the air filter, giving the main filter a chance to work more efficiently and last longer. 

• Engine Protection: Helps reduce wear by keeping contaminants out of the combustion air supply — especially useful in dusty or heavy‑use environments. 

• Genuine OEM Quality: Manufactured to Briggs & Stratton specifications for reliable fit and performance on compatible engines. 

• Easy to Fit: Simple slip‑on installation over the air filter element, no tools required for replacement.

• Extends Main Filter Life: By doing the “pre‑cleaning” work, this foam filter helps the expensive main air filter stay cleaner longer. 

Why It Matters:
A clean air supply is crucial for proper engine combustion and performance. Installing a quality pre‑filter like this one helps protect your mower or outdoor equipment engine from premature wear, reduces maintenance costs and keeps power delivery consistent — especially when operating in dusty conditions.