lasuroa 2pcs Primer Bulb Replacement, 694395 Rubber Carburetor Primer Bulb Compatible with Briggs & Stratton 5085 5085H 5085K Lawn Mower Small Fuel Engines Parts

What It Is

This is a set of two rubber primer bulbs (part #694395) used to manually pump fuel into the carburetor for easier starting on small engines. They’re designed for Briggs & Stratton engines, commonly found on walk-behind lawn mowers, pressure washers, and other small equipment.

Fitment & Compatibility

• OEM Reference: Replaces Briggs & Stratton part number 694395, 5085, 5085H, and 5085K.
• Engine Brands: Direct fit for many Briggs & Stratton single-cylinder engines (e.g., 500e, 550e, 575e series, and older Quantum/Intek models).
• Check Before Buying: Measure the bulb’s outer diameter (typically ~0.75–0.8 inches) and the stem length (~0.5 inches). Verify your carburetor’s primer port shape—this bulb uses a barbed stem that pushes into a rubber grommet. If your engine uses a push-in or screw-in primer, this won’t work.
• Deck/Model: No deck size relevance—fit depends solely on carburetor type. Look for a plastic primer bulb housing with a small rubber grommet on top.

Key Things to Know

• Quality: Rubber feels flexible and durable for the price. May harden over time with ethanol fuel exposure, but no worse than OEM.
• Installation: Simple—no tools required. Pry out old bulb, clean grommet, push new bulb in until seated. Takes 2 minutes.
• Common Gotcha: If the grommet is cracked or missing, the bulb won’t seal. Check and replace grommet separately if needed (often sold as a set).
• Two-Pack Value: Having a spare is smart—bulbs fail from dry rot or debris. Keep one in your toolbox.

Should You Buy It

If your Briggs & Stratton mower won’t start without repeated primer presses, or the bulb is cracked/hard, this is a cheap, effective fix. Ideal for DIY homeowners who want a quick carburetor refresh without replacing the whole unit. Not for engines with integrated primer systems or other carburetor brands.