12pc 694394 Primer Bulb for B & S 494408 NHC 262-4018 Oregon 49-058 Lawn Mower Parts (12PCS)

What It Is

This is a 12-pack of aftermarket primer bulbs designed for small engines, primarily used on lawn mowers, generators, and power equipment to prime the carburetor with fuel before starting. The set replaces OEM part 694394 and fits multiple cross-references including Briggs & Stratton 494408, NHC 262-4018, and Oregon 49-058.

Fitment & Compatibility

Before buying, verify your engine’s primer bulb part number. This set is a direct replacement for Briggs & Stratton 694394, 494408, and Oregon 49-058. It fits most walk-behind mowers, snow blowers, and pressure washers using these bulbs, but not all. Measure the bulb’s diameter (typically 1.25–1.5 inches) and check that the mounting stem matches your carburetor’s barb. If your OEM part number differs (e.g., 691043 or 590918), this set won’t fit. Confirm your machine’s brand and model against the cross-reference list; Honda, Toro, and MTD models may use different bulbs.

Key Things to Know

• Quality: Aftermarket bulbs may feel slightly stiffer or softer than OEM. Most users report acceptable durability, but a few note cracking after a season. Inspect for mold flash or uneven edges before install.
• Installation: Easy—pop off the old bulb, push the new one onto the carburetor barb. No tools required. If fit is tight, warm the bulb in hot water for 10 seconds to soften.
• 12-pack value: Only useful if you maintain multiple engines or expect repeated failures. For a single mower, a single bulb or 2-pack is cheaper and less wasteful.
• Common gotcha: The bulb’s stem must align perfectly with the carburetor’s barb. If it’s too loose, the bulb won’t prime; if too tight, it may tear when pushed on.

Should You Buy It

Buy this 12-pack if you own several small engines that share the same primer bulb (e.g., a small repair shop or multiple mowers) and want a bulk supply. For a single mower, skip—a 1- or 2-pack from a reputable brand like Oregon or Stens costs less and reduces risk of aftermarket fit issues.