Primer Bulb
Zama 0057003
6 compatible models
The Zama 0057003 is an aftermarket primer bulb compatible with 6 models across 2 brands. It is a direct cross-reference for OEM part numbers A021003661, 12318140630, 1130 350 6200. Compatible equipment includes Echo PB-250LN, Echo PB-500, Echo PB-580T, Stihl BG 55, Stihl BG 56 C-E, and 1 more.
Amazon Buying Check
Use the Amazon listing to compare kit contents, seller details, shipping, and OEM compatibility notes before ordering.
Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.
Compatible Models
| Brand | Model | OEM # | Confidence | Source | Reviewed | Evidence | |
|---|---|---|---|---|---|---|---|
| Echo | PB-250LN | A021003661 | Medium | Aftermarket catalog | 2026-05-20 | Match OEM and dimensions | Handheld Blower |
| Echo | PB-500 | 12318140630 | Medium | Aftermarket catalog | 2026-05-20 | Match OEM and dimensions | Backpack Blower |
| Echo | PB-580T | 12318140630 | Medium | Aftermarket catalog | 2026-05-20 | Match OEM and dimensions | Backpack Blower |
| Stihl | BG 55 | 1130 350 6200 | Medium | Aftermarket catalog | 2026-05-20 | Fits BG 45, BG 46, BG 55, BG 65, BG 85 and other Stihl 2-stroke equipment | Blower |
| Stihl | BG 56 C-E | 1130 350 6200 | Medium | Aftermarket catalog | 2026-05-20 | Fits BG 55, BG 56, BG 65, BG 66, BG 75, BG 85, BG 86 and other Stihl 2-stroke equipment | Blower |
| Stihl | BG 86 | 1130 350 6200 | Medium | Aftermarket catalog | 2026-05-20 | Fits BG 55, BG 56, BG 65, BG 66, BG 75, BG 85, BG 86 and other Stihl 2-stroke equipment | Blower |
What this part is
Zama 0057003 is listed here as a primer bulb replacement option. Use this page as a fitment cross-reference, then confirm the removed part, model plate, and seller listing details before buying.
OEM numbers it replaces
A021003661, 12318140630, 1130 350 6200
Alternate spellings
0057003 is the normalized part number used on this site.
Known exclusions
- No specific exclusion is listed in the current data. Still verify serial range, production variant, and removed-part details before ordering.
Dimensions and specs
- No verified dimension field is available for this part. Compare the old part shape, mounting, routing, thread, gap, pitch, gauge, or other part-type-specific dimensions before purchase.
Symptoms that suggest replacement
- Primer bulb will not fill
- Cracked bulb
- Fuel leaking around bulb
- Bulb stays collapsed
How to verify before buying
- Confirm your equipment is one of the compatible models listed above.
- Match the OEM number, stamped part number, or physical spec against the removed part.
- Read the model-specific evidence, confidence, source, reviewed date, dimensions, notes, and exclusions before opening an Amazon listing.
Common wrong-fit mistakes
- Ordering from a broad model-family listing without checking the exact equipment model.
- Ignoring the old OEM number, stamped part number, or physical dimensions.
Related model and part pages
Amazon buying cautions
- Check that the Amazon listing includes the exact part number or verified cross-reference shown here.
- Compare kit contents, gaskets, fuel lines, bulbs, plugs, filters, and dimensions against the removed part before checkout.
- A listing title can mention the right model and still include the wrong revision, accessory, or generic substitute.