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Two small plastic fuel tank vent valves, light coloured, shown side by side

LAHDEK

LAHDEK Fuel Tank Vent Balance For Stihl 028 029 039 MS290 MS310 MS390 2pcs

SKU CH-1943-VPEMA

Two-pack of fuel tank vent plugs fits Stihl 028, 029, 039, MS290, MS310 and MS390 chainsaws, replacing OEM 1117 350 5800

  • Fits Stihl 028 029 039 MS290 MS310 MS390 chainsaws
  • Replaces OEM part 1117 350 5800 for exact fit
  • Two vents included for immediate replacement
  • Petrol chainsaw fuel system component
  • New replacement part ready to install

Direct-fit vent for Stihl chainsaws

This two-piece fuel-tank vent balance replaces OEM part 1117 350 5800 on Stihl models 028, 029, 039, MS290, MS310 and MS390. It restores proper tank venting so the two-stroke petrol engine receives consistent fuel flow during operation. The parts are supplied new and ready to install.

Two-piece pack prevents downtime

Having both vents in one pack lets you replace the original and keep a spare on hand for the next service interval. That reduces the chance of an unexpected blockage stopping work mid-cut. No additional tools or adapters are required beyond what the saw already uses.

OEM reference 1117 350 5800 confirms fit

Matching this number to your saw’s parts diagram is the single check that guarantees compatibility. If the diagram lists a different vent part number, this set will not fit and should not be used.

Highlights

  • Fits Stihl 028 029 039 MS290 MS310 MS390 chainsaws
  • Replaces OEM part 1117 350 5800 for exact fit
  • Two vents included for immediate replacement
  • Petrol chainsaw fuel system component
  • New replacement part ready to install

Specifications

No published specifications for this item yet.

Questions about this item

How often should the fuel tank vent balance be replaced on a Stihl MS290 chainsaw?

Replace the vent balance if the engine stalls, runs rough or the tank builds vacuum during operation; inspect it each season and swap it when the rubber seal hardens or cracks.

What symptom appears first when the vent balance can no longer vent the tank on a Stihl 039?

The engine loses power under load and may die because a vacuum forms in the fuel tank, starving the carburettor of petrol.

Does the vent balance get hot or noisy during all-day cutting with a Stihl MS310?

The part is a passive rubber-and-plastic breather; it generates no heat and makes no noise regardless of how long the saw runs.

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