Genuine Vanguard / Briggs & Stratton OEM part: 692520 – a wrap‑style foam pre‑cleaner that fits over the main air filter to capture larger particles first, helping to protect the engine and extend the service life of the primary filter.
Key Benefits
- Extra filtration layer: Foam pre-cleaner provides an additional stage of filtration for intake air, helping reduce dirt ingestion and wear.
- OEM fit & performance: Designed to Briggs & Stratton OEM standards for correct fit and reliable engine protection.
- Extends main filter life: Designed to be used with the matching main air filter 692519.
Fitment / Compatibility
This pre-cleaner is a wrap-style foam filter used on select Vanguard V‑Twin and opposed twin cylinder engines and is specified to fit air filter 692519. If you’re unsure, send us your engine Model / Type / Code and we’ll confirm compatibility.
Installation Tip
- Install dry on the filter cartridge (do not oil the pre-cleaner).
Part Numbers
- OEM Part No: 692520
- Replaces: 4257
- Pairs with main filter: 692519
Why buy from Mitchell Powersystems? Genuine OEM parts, fast UK dispatch, and expert support to help you choose the right part first time.


