STIHL Air Filter - 44229 120 1800

Key Features

• Factory-specified filtration chamber geometry ensures unobstructed intake routing
• Pleated composite media captures fine wood dust and airborne debris before reaching carburetor jets
• Bonded rubber perimeter seal prevents unfiltered air bypass and maintains vacuum integrity
• Direct structural alignment with original housing brackets eliminates fitting modifications
• Preserves optimal vapor-to-fuel ratio to sustain rated torque output across extended service intervals

Product Details

• Part Number: 44229 120 1800
• Element Type: Primary dry filter with integrated mounting gasket
• Media Composition: Reinforced synthetic-cellulose blend rated for high-volume particulate displacement
• Sealing Profile: Continuous peripheral rim designed for uniform clamp compression
• Service Threshold: Replace when differential pressure restricts throttle response or visible media degradation is observed

Compatibility

• Stihl MS 261 C-M, MS 271 C-M
• Stihl MS 362, MS 382, MS 391
• Stihl MS 461 C-BE, MS 462, MS 463 C-BE
• Designated powerheads and handheld variants utilizing this chassis filter code

Installation requires housing clip release, media extraction, and flush gasket seating to seal secondary air pathways. Verify clean crankcase breather routing before reassembly to maintain balanced pressure differentials and prevent premature piston ring wear. Conduct inspection cycles per machine-hour intervals outlined in the operator manual, swapping the unit immediately if suction resistance exceeds normal operating parameters.