STIHL Replacement Air Filter Kit

This air filter kit from STIHL is designed for use with several of their cut-off saw models. The kit includes the primary air filter (and in some cases a pre-filter) to keep your saw’s engine protected from dust, debris, and abrasive particles commonly encountered in construction or masonry work. For example, one listing states the kit fits TS410, TS420, TS480i and TS500i models
Proper filtration helps maintain engine performance, reduce wear, and ensure longer life for your saw.

• Engine protection: Captures fine dust and abrasives before they damage the engine’s internals — helpful for saws used in concrete, masonry or other harsh environments.
• Exact fitment: Designed to match OEM part number 4238 140 4403 (and related numbers like 4238 140 4404) so installation is straightforward with no modifications needed.
• Improved performance: Clean air flow helps the saw maintain its cutting power and avoid bogging down due to clogged filtration.
• Cost-effective maintenance item: Replacing the air filter regularly is much cheaper than repairing engine damage caused by contamination.
• Simple installation: Typically just involves removing the cover, swapping the old filter for the new kit, and securing the cover — minimal downtime.

• Ideal for professional contractors using STIHL cut-off saws in heavy-duty environments (e.g., concrete cutting, masonry removal).
• Also suitable for rental fleets, maintenance crews, or any user who wants to ensure their saw is operating at peak condition.
• Especially beneficial when working in dusty/abrasive conditions (demolition, roadway cutting, concrete slabs) where the air intake may take on heavy contamination.
• Use as part of regular preventive maintenance: replacing the filter at specified intervals (or sooner if the environment is extremely dusty).

• Compatible OEM Part Number: 4238 140 4403.
• Fits Saw Models: For example, STIHL TS410, TS420, TS480i, TS500i.
• Included Components: Filter kit typically includes the main air filter and, in some kits, a pre-filter or foam filter for added protection.
• Filter Dimensions (example): approx. Length 5-3/4", Width 5-1/2", Height 1-3/4".
• Function: Provides clean air intake by preventing dust/debris infiltration and maintaining airflow to engine.
• Installation Frequency: Based on cutting conditions; in harsh dust/abrasive environments replacement may be needed more frequently.