2-Pack Primer Bulb 503936601 – Fits 445 450 455 460 K750 K760

2-Pack Chainsaw Primer Bulb – Part #503936601

Keep your chainsaw and outdoor power equipment starting quickly and running smoothly with this genuine-fit replacement primer bulb (Part #503936601). Sold as a convenient 2-pack, these durable plastic primer bulbs are designed to clip securely into carburetors with snap-in primer assemblies, ensuring a reliable fuel prime every time you fire up your saw or other power equipment.

Compatible Models

• Chainsaws: 445, 450, 455 Rancher, 460, K750, K760
• Also fits select models from Poulan, Homelite, McCulloch, Troy-Bilt, and more
• Suitable for carburetors with snap-in primer assembly

Wide Application

These primer bulbs are versatile enough for use across a broad range of garden power equipment, including:

• Chainsaws
• Brush Cutters
• Pressure Washers
• Leaf Blowers
• Water Pumps
• Edgers

Key Features

• Durable Plastic Construction: Made from quality plastic for long-lasting performance in demanding outdoor conditions.
• Snap-In Fit: Clips into place easily with two side "ears" and features two fuel line fittings on the underside for a secure, leak-free connection.
• Precise Compatibility: Engineered to match OEM specifications (Part #503936601) for a direct-fit replacement.
• Great Value 2-Pack: Two bulbs included so you have a spare ready when you need it.

Package Contents

• 2 × Replacement Primer Bulbs (Part #503936601)

Notes

• Colors shown may vary slightly depending on your monitor's brightness and lighting conditions.
• Please allow minor measurement tolerances.

Made in Mainland China.

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For general chainsaw safety and maintenance guidance, visit the U.S. Consumer Product Safety Commission (CPSC) for tips on safe operation of outdoor power tools.

Learn more: Ingersoll Power Equipment

Frequently Asked Questions

Q: What chainsaw models is the 503936601 primer bulb compatible with?

A: This primer bulb (Part #503936601) is compatible with chainsaw models including the 445, 450, 455 Rancher, 460, K750, and K760, as well as select carburetors from Poulan, Homelite, McCulloch, Troy-Bilt, and others that feature a snap-in primer assembly.

Q: How do I install the replacement primer bulb on my chainsaw?

A: Installation is straightforward — the primer bulb clips into place using two small side "ears" that snap securely into the carburetor housing. Two fuel line fittings on the underside connect to your existing fuel lines. No special tools are required for most installations.

Q: Why should I buy a 2-pack of primer bulbs?

A: Primer bulbs are wear items that can crack or harden over time due to fuel and outdoor exposure. Having a 2-pack means you always have a spare on hand, saving you downtime when you need your equipment most — especially during heavy-use seasons like fall and spring.

Q: Is this primer bulb suitable for equipment other than chainsaws?

A: Yes! This primer bulb is compatible with a wide range of outdoor power equipment beyond chainsaws, including brush cutters, pressure washers, leaf blowers, water pumps, and edgers — as long as the carburetor uses a snap-in primer assembly compatible with Part #503936601.