WhichPartFits.com

Chainsaw

Husqvarna 450

2-Stroke

The Husqvarna 450 is a 50.1cc <!-- verify: husqvarna.com/us --> 2-stroke chainsaw at the top of Husqvarna's homeowner range, suited for demanding firewood production, regular felling, and prosumer land management with 18" to 20" guide bars. It runs a Zama carburetor and features the X-Torq engine with Air Injection pre-cleaning. The 450 shares service parts families with the 455 Rancher. Common maintenance items are the spark plug, air filter, fuel filter, primer bulb, and bar oiler. A popular step-up from the 445 for users who regularly fell trees larger than 12" in diameter.

See also: 445, 455 Rancher — parts are often interchangeable within this family.

Spark Plug

OEM537254402(0.5mm gap)

Air Filter

OEM531009748Fits 450 and 450e
BrandPart #
Stens605-414Buy on Amazon →

Fuel Filter

OEM503446501
BrandPart #
Stens610-035Buy on Amazon →

Carburetor

OEM545070601Zama C1Q-EL24A

Ignition Coil

OEM544454801Also fits 435, 440
BrandPart #

Primer Bulb

OEM503936601

Fuel Line Kit

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

Chain

OEM(20", .325" pitch, .050" gauge, 78 drive links)Stock bar length; verify drive link count matches your bar

Guide Bar

OEM(20", .325" pitch, .050" gauge)