Briggs & Stratton Primer Bulb - 694394 (5 Pack - 4178)

Product Details & Features

Ensure quick and reliable starts on your Briggs & Stratton-powered outdoor equipment with this 5-pack of genuine primer bulbs designed to replace the original 694394 part. Each bulb helps prime the carburettor by drawing fuel from the tank and delivering it into the carburettor before starting, reducing effort and improving cold starts. 

Product Description:
This set of five Briggs & Stratton 694394 primer bulbs is ideal for routine maintenance or stocking up on spares for multiple machines. Made from fuel-resistant elastomer, these durable bulbs are built to withstand regular use and exposure to petrol without cracking or softening. When pressed, each bulb creates a vacuum that draws fuel toward the carburettor, helping to ensure your engine fires quickly and reliably — especially from cold. 

Key Features:

• Genuine OEM Quality: Built to original Briggs & Stratton specifications for accurate fit and dependable performance. 

• Improved Cold Starts: Helps charge the carburettor with fuel prior to starting, reducing the number of pulls or cranking needed. 

• Durable Fuel-Resistant Construction: Made from robust materials that resist fuel degradation and maintain flexibility over time. 

• 5-Pack Value: Great for keeping multiple machines serviced or for having spares on hand when you need them. 

• Easy to Replace: Slide-in installation makes replacement quick and straightforward during routine servicing. 

Why It Matters:
The primer bulb plays a simple but vital role in your engine’s fuel system. By assisting fuel delivery into the carburettor before cranking, it reduces starting strain on your engine and improves cold-start reliability — especially in dusty conditions or after long periods of non-use. Regularly replacing worn or hardened bulbs with this genuine 5-pack helps keep your mower, tiller, generator or other equipment starting smoothly all season long.