Chainsaw

Poulan Pro PP4218A

2-Stroke

The Poulan Pro PP4218A is a 42cc 2-stroke chainsaw and one of the most popular entry-level chainsaws sold in the United States, commonly available at home improvement stores with an 18" guide bar. Built on the Poulan Pro consumer platform shared with the Husqvarna consumer lineup, it suits homeowner firewood cutting and occasional felling of small to medium trees. The PP4218A runs a Zama carburetor and uses NGK BPMR7A or Champion RCJ6Y spark plugs. Common maintenance items are the air filter, fuel filter, primer bulb, and fuel lines. A high-value option for first-time chainsaw buyers.

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: 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: 952030150, 530057869, 530095646, 545070601, 530071966, 545115801, 530047721, 580727101, 952051338, 952044689
Model Family: PP4218A, PP4620AV
Last Reviewed: 2026-05-20
Data Confidence: Aftermarket-confirmed
Sources Consulted: OEM part references, Aftermarket catalog cross-references, Retailer fitment listings

ℹ See also: PP4620AV — parts are often interchangeable within this family.

Quick Fitment

Part Type	OEM / Spec	Common Option	Confidence
Spark Plug	952030150	Champion RCJ7Y	Medium · 2026-05-20
Air Filter	530057869	Stens 605-362	Medium · 2026-05-20
Fuel Filter	530095646	Stens 610-035	Medium · 2026-05-20
Carburetor	545070601	Zama C1M-W26	Medium · 2026-05-20
Primer Bulb	530047721	Zama BG-00-4	Medium · 2026-05-20
Recoil Starter	530071966	OEM 530071966	Low · 2026-05-20
Ignition Coil	545115801	OEM 545115801	Low · 2026-05-20
Fuel Line Kit	580727101	Stens 115-627	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 Poulan Pro PP4218A, 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.
Matching bar length but missing pitch, gauge, or drive-link count.

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

Cuts slowly

Chain pitch/gauge, bar wear, drive links

Replacement Options

Best OEM equivalent

Start with OEM references 952030150, 530057869, 530095646, 545070601 and match the removed part before choosing a listing.

Common aftermarket option

Cross-check aftermarket listings such as Champion RCJ7Y (spark plug), Stens 605-362 (air filter), Stens 610-035 (fuel filter) against the OEM number and dimensions.

Best for annual tune-up

Bundle spark plug, air filter, fuel filter when servicing the Poulan Pro PP4218A 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 chain/bar combo

Match chain specs together, especially pitch, gauge, drive links, and bar mount details.

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 PP4620AV? Parts may interchange with PP4620AV, but verify the serial range, OEM number, and physical part details before ordering.

Should I buy OEM or aftermarket parts for the Poulan Pro PP4218A? 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 PP4218A? 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.

What chain details matter besides bar length? Match pitch, gauge, and drive-link count against the bar stamp, old chain, and drive sprocket. Bar length alone is not enough.

Spark Plug

OEM952030150Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Dimensions: Champion RCJ-7Y; 0.025" gap
Variant notes: Same plug used across Poulan Pro 42cc family

Brand	Part #
Champion	RCJ7Y	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.
NGK	BPMR7A	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Air Filter

OEM530057869Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits PP4218A and PP4218AV variants; check shape before ordering — some variants use 530057925

Brand	Part #
Stens	605-362	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Fuel Filter

OEM530095646Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: In-tank fuel pick-up assembly

Brand	Part #
Stens	610-035	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Carburetor

OEM545070601Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Zama W26 (C1M-W26 series); also listed as C1M-W26A/B/C variants

Brand	Part #
Zama	C1M-W26	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Recoil Starter

OEM530071966Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Kit-EPS Starter Pulley; includes shoulder screw, hub, and spring (refs 20,21,22,30)

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.

Ignition Coil

OEM545115801Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Module-Ignition; specific to PP4218A (differs from PP4620AV)

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

OEM530047721Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Snap-in purge bulb

Brand	Part #
Zama	BG-00-4	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

OEM580727101Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Includes fuel line and fitting; listed twice in IPL (refs 5 and 17)

Brand	Part #
Stens	115-627	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Chain

OEM952051338Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Dimensions: 18", 3/8" LP pitch, .050" gauge, 62 drive links
Variant notes: Also superseded by 581562301; verify drive link count matches bar

Brand	Part #
Oregon	91PX062G	Best chain/bar comboAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Guide Bar

OEM952044689Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Dimensions: 18", 3/8" LP pitch, .050" gauge

Brand	Part #
Oregon	180SDEA041	Best overallAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Poulan Pro PP4218A