Air Filter Cartridge (Round, Pleated Paper) – Genuine OEM Vanguard / Briggs & Stratton

Genuine Vanguard / Briggs & Stratton OEM Part: 394018S – a round, pleated-paper air cleaner cartridge designed to protect your engine by filtering dust and debris before it enters the intake. Key Features Round pleated-paper cartridge for reliable filtration and engine protection. Fits: L-Head Twin Horizontal and V‑Twin Vanguard engines (selected applications). Pre-cleaner: Uses 272490S foam pre-filter (sold separately). OEM quality: Manufactured to Briggs & Stratton OEM standards for correct fit and performance. Dimensions / Cross-Reference Approx. size: OD 181mm, ID 140mm, Height 57mm. Replaces: 392642, 394018 (and other cross-references). Need Help Confirming Fitment? Many parts look similar across engine variants. Send us your engine Model / Type / Code and we’ll help confirm compatibility before you order. Why buy from Mitchell Powersystems? Genuine OEM parts, fast UK dispatch, and expert support to help you choose the right part first time.