NQEUEPN 2pcs Snap in Primer Bulb Pump, Carburetor Primer Bulb Replacement Bulbs Compatible with Walbro 188-512 WT-23A Poulan Echo Chainsaws Ryobi BP42 Homelite Bolens Trimmer Blower

What It Is

This is a snap-in primer bulb replacement kit (2-pack) designed to restore the fuel priming function on small engines where the original bulb has cracked, hardened, or collapsed. It’s intended for handheld outdoor power equipment like chainsaws, trimmers, leaf blowers, and hedge trimmers.

Fitment & Compatibility

Before buying, verify these three things:

• Bulb type: This is a snap-in (not push-in or screw-in) design. It fits Walbro WT-23A, 188-512, and similar carburetors. It does NOT fit all primer bulbs—check your carburetor model number.
• Machine brands: Compatible with Poulan, Echo, Ryobi, Homelite, Bolens, and many others that use Walbro-style snap-in bulbs. Not universal—check your OEM part number against Walbro 188-512.
• Measurements: Bulb diameter is ~0.75 inches, height ~0.6 inches. Measure your old bulb’s snap ring diameter and depth to confirm. If your carb uses a different snap ring size, this won’t fit.

Key Things to Know

• Quality: These are aftermarket, not OEM. Most reviews note they work fine, but a few report slightly softer rubber that may wear faster than genuine Walbro parts.
• Installation difficulty: Easy—snaps in by hand with light pressure. No tools needed. If it’s hard to seat, you may have the wrong size.
• Common gotcha: The snap ring on the carburetor must be clean and undamaged. A bent or corroded ring won’t hold the bulb securely, causing air leaks.
• 2-pack value: You get two bulbs for the price of one OEM. Keep the spare for future replacement.

Should You Buy It

If you have a Walbro WT-23A or 188-512 carburetor on a Poulan, Echo, Ryobi, or Homelite trimmer/blower/chainsaw, this is a cheap, easy fix for a failed primer bulb. It’s not for every carb—double-check your model number—but for the right fit, it’s a solid value at $6.29.