• STIHL part 1121-121-4801 — IPL diagram snippet (6x zoom, amber highlight)
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STIHL

Genuine STIHL - Pump Diaphragm - 1121-121-4801

Genuine STIHL - Pump Diaphragm - 1121-121-4801

1121-121-4801

Genuine STIHL part 1121-121-4801 — PUMP DIAPHRAGM.

Compatibility

Fits 9 STIHL models (4 active, 5 legacy).

Show all 9 compatible models
  • STIHL BR 400 (discontinued)
  • STIHL BR 420 (discontinued)
  • STIHL MS 241 C (discontinued)
  • STIHL MS 250 Chainsaw
  • STIHL MS 251 (discontinued)
  • STIHL MS 260 (discontinued)
  • STIHL MS 311 Chainsaw
  • STIHL MS 362 Chainsaw
  • STIHL MS 391 Chainsaw

Specifications

Displacement 2.8–3.9 cu-in
Power 2.2–3.5 kW
Engine power 3–4.8 HP
Power-to-weight ratio 1.6–2.1 kg/kW
Device length with bumper spike 415–461 mm (without guide bar and saw chain)
$10.99 USD
$10.99 USD
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