Backpack Blower

Stihl BR 550

2-Stroke

The Stihl BR 550 is a 2-stroke professional backpack blower near the top of Stihl's commercial BR range, designed for maximum-duty landscaping operations and high-volume debris clearing. It runs a Zama carburetor. An Easy2Start variant is available. Under daily commercial use, monthly fuel system inspection, air filter service, and harness integrity checks are routine. The BR 550 is a preferred choice on large-crew landscaping operations where operators run the blower for multiple hours per shift. Stihl's anti-vibration system reduces long-shift fatigue relative to older professional backpack designs.

See a wrong fitment? Report a correction.

Verify before ordering: Fitment can vary by serial number, production date, region, and sub-model. Match the OEM number and physical dimensions before ordering.

Equipment: Backpack Blower · 2-Stroke
Covered Parts: Spark Plug, Air Filter, Fuel Filter, Carburetor, Recoil Starter, Ignition Coil, Primer Bulb, Fuel Line Kit
OEM References: 0000 400 7011, 4282 141 0300, 4282 007 3600, 4282 120 0606, 4282 080 3401, 4282 400 1300, 1130 350 6200, 4282 007 1014
Model Family: BR 500, BR 550, BR 600
Last Reviewed: 2026-05-20
Data Confidence: Aftermarket-confirmed
Sources Consulted: OEM part references, Aftermarket catalog cross-references, Retailer fitment listings

ℹ See also: BR 500, BR 600 — parts are often interchangeable within this family.

Quick Fitment

Part Type	OEM / Spec	Common Option	Confidence
Spark Plug	0000 400 7011	NGK CMR6H	Medium · 2026-05-20
Air Filter	4282 141 0300	Stens 605-599	Medium · 2026-05-20
Fuel Filter	4282 007 3600	OEM 4282 007 3600	Low · 2026-05-20
Carburetor	4282 120 0606	Zama C1Q-S233	Medium · 2026-05-20
Primer Bulb	1130 350 6200	Zama 0057004	Medium · 2026-05-20
Recoil Starter	4282 080 3401	Stens 150-737	Medium · 2026-05-20
Ignition Coil	4282 400 1300	OEM 4282 400 1300	Low · 2026-05-20
Fuel Line Kit	4282 007 1014	Hipa 4282-007-1014	Medium · 2026-05-20

Tune-Up Kit

Common service bundle: spark plug, air filter, fuel filter, carburetor, primer bulb, fuel line kit.

Maintenance Interval

Inspect filters and fuel lines each season, replace spark plugs during annual service, and service carb/fuel-system parts when starting or idle symptoms appear.

Before You Buy

Confirm the full model is Stihl BR 550, not just the family name.
Check serial number, production date, and regional variant before ordering.
Match the old OEM number stamped on the removed part when available.
Compare dimensions, plug gap, thread, fuel line diameter, or chain pitch/gauge where applicable.

Common Mistakes

Ordering from a family listing without checking the exact sub-model.
Buying a kit that includes the headline part but wrong gaskets, lines, or bulb size.
Choosing the wrong carburetor revision when multiple versions were used.
Assuming all fuel line kits use the same diameter and routing.
Installing the correct plug number with the wrong gap.

Symptoms Map

Won't start

Spark plug, fuel filter, primer bulb, carburetor

Starts then dies

Fuel filter, fuel line kit, carburetor

Bogs under throttle

Air filter, carburetor, spark plug gap

Primer will not fill

Primer bulb, fuel line routing, in-tank filter

Replacement Options

Best OEM equivalent

Start with OEM references 0000 400 7011, 4282 141 0300, 4282 007 3600, 4282 120 0606 and match the removed part before choosing a listing.

Common aftermarket option

Cross-check aftermarket listings such as NGK CMR6H (spark plug), Stens 605-599 (air filter), Zama C1Q-S233 (carburetor) against the OEM number and dimensions.

Best for annual tune-up

Bundle spark plug, air filter, fuel filter when servicing the Stihl BR 550 at the start of the season.

Best if replacing fuel system

Compare the fuel filter, carburetor, primer bulb, fuel line kit together so line routing, bulb size, filter style, and carburetor connections match.

Best budget kit

Use kit listings only when every included part matches this model page; cheap kits often mix correct headline parts with wrong bulbs, lines, or gaskets.

FAQ

Does this fit BR 500 or BR 600? Parts may interchange with BR 500, BR 600, but verify the serial range, OEM number, and physical part details before ordering.

Should I buy OEM or aftermarket parts for the Stihl BR 550? Use OEM when the part controls fuel metering, ignition, or safety. Aftermarket kits can be useful for routine filters, bulbs, plugs, and tune-up bundles when the OEM number and dimensions match.

How do I avoid ordering the wrong carburetor for the BR 550? Match the carburetor number stamped on the removed unit, then compare linkage, choke setup, primer routing, gasket stack, and fuel-inlet direction.

What should I check before replacing fuel-system parts? Photograph the old fuel-line routing, match line diameter and filter style, and compare primer bulb size before buying a kit.

Spark Plug

OEM0000 400 7011Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Dimensions: 0.7mm gap

Brand	Part #
NGK	CMR6H	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.
Champion	RZ7C	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Air Filter

OEM4282 141 0300Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Also fits BR 500, BR 600

Brand	Part #
Stens	605-599	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Fuel Filter

OEM4282 007 3600Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Dual-port pickup body assembly

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Carburetor

OEM4282 120 0606Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Zama C1Q-S233; also fits BR 500

Brand	Part #
Zama	C1Q-S233	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Recoil Starter

OEM4282 080 3401Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits BR 500, BR 550, BR 600

Brand	Part #
Stens	150-737	Best overallAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Ignition Coil

OEM4282 400 1300Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits BR 500, BR 550, BR 600

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Primer Bulb

OEM1130 350 6200Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits BR 500, BR 550, BR 600

Brand	Part #
Zama	0057004	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.
Hipa	1130-350-6200	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Fuel Line Kit

OEM4282 007 1014Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Includes fuel pickup line and return line; fits BR 500, BR 550, BR 600

Brand	Part #
Hipa	4282-007-1014	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.