Protect your heavy-duty commercial equipment at the deepest level with the Briggs & Stratton Genuine OEM Inner Air Filter (821136). Serving as the secondary line of defense in a premium dual-element canister filtration system, this inner filter works directly inside the primary outer filter (part 841497) to catch microscopic dust and debris that standard filters miss.
This heavy-duty cylindrical inner safety filter is precisely engineered for large-displacement, commercial-grade Briggs & Stratton / Vanguard Engines: Designed for select Vanguard Big Block V-Twin engines, including the 356000, 49E000, 49R000, 49V000, 540000, 610000, and Vanguard 40 HP commercial engine series with the Oil Guard System
Fits perfectly inside the Briggs & Stratton 841497 primary outer air filter: acts as a vital secondary safety filter, capturing ultra-fine particles before they can bypass into the combustion chamber
Genuine OEM Precision: Authentic Briggs & Stratton factory part engineered to slide perfectly inside the outer filter for a gap-free, secure fit.
Directly replaces Kohler 25-083-04, Kawasaki 11013-7019, Gravely 21536900, Exmark 103-1326, Generac 0E3656, and Donaldson P822858
Lowe's Pro Tip: The inner safety air filter does not need to be changed as frequently as the outer filter: As a rule of thumb, replace your 821136 inner filter every third time you change your outer primary filter (Part #841497), or immediately if you notice any dirt passing through the outer element.
