WhichPartFits.com

Chainsaw

Stihl MS 251

2-Stroke

ℹ See also: MS 210, MS 230, MS 250 — parts are often interchangeable within this family.

Spark Plug

OEM0000 400 7000(0.5mm gap)
BrandPart #
NGKBPMR7ABuy on Amazon →
ChampionRCJ6YBuy on Amazon →

Air Filter

OEM1143 120 1300Fits MS 231, MS 251
BrandPart #

Fuel Filter

OEM0000 350 3518In-tank pickup body fuel filter; updated version for MS 231, MS 251
BrandPart #

Carburetor

OEM1143 120 0611Zama C1Q-S295D IntelliCarb compensating carburetor; fits MS 231, MS 251
BrandPart #
ZamaC1Q-S295DBuy on Amazon →

Recoil Starter

OEM1143 080 2103Fits MS 231, MS 251
BrandPart #

Ignition Coil

OEM1143 400 1310Fits MS 231, MS 251
BrandPart #

Primer Bulb

OEM1143 350 6200Fits MS 231, MS 251
BrandPart #
ZamaBG-00-4Buy on Amazon →

Fuel Line Kit

OEM1143 358 7700Fuel hose for MS 231, MS 251
BrandPart #

Chain

OEM(18", .325" pitch, .050" gauge, 68 drive links)Stock bar length; verify drive link count matches your bar
BrandPart #
Oregon22LPX068GBuy on Amazon →

Guide Bar

OEM(18", .325" pitch, .050" gauge)
BrandPart #
Oregon183PXLBA074Buy on Amazon →