Wacker Neuson 5100039009 Air Filter External

The Wacker Neuson is a genuine OEM Air Filter External designed for the BFS900, BFS1300, and BFS1350 series gasoline-powered floor saws. As a factory-sourced component, it is manufactured to the exact specification required by Wacker Neuson, ensuring a direct, correct-fit installation with no guesswork. This air filter fits an extensive range of BFS floor saw models including the BFS940, BFS1345, BFS1350, BFS914, BFS1318, and their A, AB, ABZ, and AZ variants. Keeping a fresh, properly fitted Air Filter External in service protects the engine from abrasive concrete dust and debris — one of the harshest operating environments any power equipment faces.

Key Features

• Genuine OEM Filtration Media — Manufactured to Wacker Neuson's exact porosity and particle-capture specification, so the engine receives clean air at the correct flow rate — not an approximation.
• Direct Drop-In Replacement — Part 5100039009 is engineered to seat and seal in the original filter housing with no trimming, shimming, or adapter required.
• Broad BFS Floor Saw Coverage — Confirmed fitment across the BFS914, BFS935, BFS940, BFS1318, BFS1345, and BFS1350 series, including A, AB, ABZ, and AZ variants across multiple build numbers.
• Engine Protection in Concrete-Cutting Conditions — Floor sawing generates extremely fine silica dust; a correctly rated external air filter is the engine's first line of defense against premature cylinder and piston wear.
• Supports Consistent Power Output — A clogged or deteriorated external filter restricts intake airflow, causing rich running, power loss, and increased fuel consumption; replacing it restores proper air-fuel balance.

The external air filter is the outermost stage of the engine's air intake system, tasked with capturing large particles and heavy dust before they reach the inner filter element and carburetor. On concrete-cutting floor saws, this component works under particularly demanding conditions — fine silica and aggregate dust are generated in high volumes at close range to the intake. When the external filter becomes clogged or torn, restricted airflow forces the engine to run rich, reducing cutting power and accelerating wear on internal components. Regular inspection and timely replacement of the Air Filter External is one of the most cost-effective ways to extend engine life on any BFS series floor saw.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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