WhichPartFits.com

Chainsaw

Husqvarna 445

2-Stroke

ℹ See also: 450, 455 Rancher — parts are often interchangeable within this family.

Spark Plug

OEM537254402(0.5mm gap)OEM is Champion RCJ7Y equivalent; also fits 435, 440, 450
BrandPart #
NGKBPMR7ABuy on Amazon →
ChampionRCJ7YBuy on Amazon →

Air Filter

OEM544080802Fits 445 and 450 series; also referenced as 544080803
BrandPart #
Stens605-414Buy on Amazon →

Fuel Filter

OEM503446501In-tank pickup filter
BrandPart #
Stens610-035Buy on Amazon →

Carburetor

OEM506450401Zama C1M-EL37B; also fits 445E, 450, 450E
BrandPart #
ZamaC1M-EL37BBuy on Amazon →

Recoil Starter

OEM544071604Also fits 450
BrandPart #

Ignition Coil

OEM573935702Also fits 435, 440, 450; replaces 505427201, 544243801
BrandPart #

Primer Bulb

OEM503936601
BrandPart #
ZamaBG-00-4Buy on Amazon →

Fuel Line Kit

OEM544128601Includes fuel pickup line and return line
BrandPart #
Stens115-627Buy on Amazon →

Chain

OEM(18", .325" pitch, .050" gauge, 72 drive links)Stock bar length; verify drive link count matches your bar
BrandPart #
Oregon95TXL072EBuy on Amazon →

Guide Bar

OEM(18", .325" pitch, .050" gauge)
BrandPart #
Oregon180TXLBK095Buy on Amazon →