Fenhaliny 594281 Primer Bulbs — Compatible with 300e/450e/500e Engines (2 Pack)

Meet Fenhaliny 594281 primer bulbs, a practical replacement option for select small-engine priming needs. Each bulb features a small vent hole on top to support proper fuel draw and venting during operation, designed to deliver a controlled prime when you prepare to start. The 2-pack format gives you options for immediate replacement and long-term readiness, reducing downtime and ensuring you have a spare on hand when you need it. The compact size and straightforward install make it a sensible upgrade for compatible equipment, helping you stay prepared for routine maintenance or unexpected wear.

Compatibility and fit

The 594281 primer bulb is listed as compatible with 300e, 450e, and 500e series engines, including related variations such as 450E, 500E, and 550E. The two‑pack format makes it easy to stock up and minimizes downtime when a replacement is needed, so you can get back to work with minimal interruption.

• Replace Number: 594281
• Primer bulb with a hole in the top of the bulb
• Diameter: 1-3/8" - Height: 1 "
• Compatible with 450E, 500E, 550E, 08P502, 09P6S, 09P7 series

What you gain from a replacement bulb

• Potentially smoother starts in compatible models
• Compact dimensions that fit common priming housings
• Quality replacement parts designed for regular maintenance
• Two-pack convenience to keep spare on hand

Quality and practical use

Fenhaliny emphasizes practical, no-nonsense parts designed for straightforward maintenance tasks. While results can vary by engine and usage, this replacement bulb offers a simple, documented fit for the specified models. For best results, ensure you follow proper safety steps and consult your equipment manual before replacing fuel components.

Installation tips

Before installation, make sure the engine is cool and any power sources are disconnected as required by your equipment’s guidelines. Align the bulb with the housing’s opening, press firmly to seat, and recheck for a secure seal. If you notice wear, cracking, or leakage, replace with a fresh 594281 bulb to maintain a clean priming path.