Primer Bulb
Stens 120-730
Also: 120 730
6 compatible models
The Stens 120-730 is an aftermarket primer bulb compatible with 6 models across 1 brand. It is a direct cross-reference for OEM part number 694394. Compatible equipment includes Briggs & Stratton 500e Series, Briggs & Stratton 550ex Series, Briggs & Stratton 625ex Series, Briggs & Stratton 675ex Series, Briggs & Stratton 725EXi Series, 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 | |
|---|---|---|---|---|---|---|---|
| Briggs & Stratton | 500e Series | 694394 | Medium | Aftermarket catalog | 2026-05-21 | Fits all 450–675 series Briggs & Stratton small engines. DIY packaged version is 5084K. | Small Engine |
| Briggs & Stratton | 550ex Series | 694394 | Medium | Aftermarket catalog | 2026-05-20 | Fits all 450–675 series Briggs & Stratton small engines. DIY packaged version is 5084K. | Small Engine |
| Briggs & Stratton | 625ex Series | 694394 | Medium | Aftermarket catalog | 2026-05-20 | Fits all 450–675 series Briggs & Stratton small engines. DIY packaged version is 5084K. | Small Engine |
| Briggs & Stratton | 675ex Series | 694394 | Medium | Aftermarket catalog | 2026-05-20 | Fits all 450–675 series Briggs & Stratton small engines. DIY packaged version is 5084K. | Small Engine |
| Briggs & Stratton | 725EXi Series | 694394 | Medium | Aftermarket catalog | 2026-05-20 | Fits all 450–725 series Briggs & Stratton small engines. DIY packaged version is 5084K. | Small Engine |
| Briggs & Stratton | 850EXi Series | 694394 | Medium | Aftermarket catalog | 2026-05-20 | Standard Briggs & Stratton primer bulb fits 850EXi series. DIY packaged version is 5084K. | Small Engine |
What this part is
Stens 120-730 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
694394
Alternate spellings
120-730, 120 730
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.