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Chainsaw

Husqvarna 445

2-Stroke

The Husqvarna 445 is a 45.7cc 2-stroke chainsaw and the mid-point of Husqvarna's E-series consumer lineup, suited for regular firewood production and occasional felling of medium-diameter trees with 13" to 18" guide bars. The X-Torq engine provides improved torque and fuel economy over the previous generation. The 445 runs a Zama carburetor and accepts the NGK BPMR7A or Champion RCJ6Y spark plug. Parts families overlap with the 435 and 440 within the E-series. Routine maintenance: spark plug, air filter, primer bulb, and fuel system components.

Husqvarna 445 quick specs

Equipment
Chainsaw · 2-Stroke
Covered Parts
Spark Plug, Air Filter, Fuel Filter, Carburetor, Recoil Starter, Ignition Coil, Primer Bulb, Fuel Line Kit, Chain, Guide Bar
OEM References
8
Model Family
445, 450, 455 Rancher
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

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

Recoil Starter

OEM544071604Also fits 450
BrandPart #

Ignition Coil

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

Primer Bulb

OEM503936601

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

Guide Bar

OEM(18", .325" pitch, .050" gauge)