Husqvarna 503936601 Air Purge Bubble – Genuine OEM Replacement Primer Bulb

Part Number: 503936601
Category: Outdoor Power Equipment Parts
Type: Air Purge Bubble – Genuine OEM Replacement Primer Bulb

The Husqvarna 503936601 Air Purge Bubble is a genuine OEM replacement primer bulb designed for a wide range of Husqvarna outdoor power equipment. Installed within the carburetor and fuel system, the air purge bulb removes air from the carburetor and fuel lines and helps circulate fuel through the system for easier engine starting. Husqvarna officially identifies 503936601 as an Air Purge Bubble used to remove air from the carburetor and fuel system.

Product Specifications

• Part Number: 503936601
• Manufacturer: Husqvarna
• Product Type: Air Purge Bubble / Primer Bulb
• Function: Removes Air and Circulates Fuel Through the Carburetor and Fuel System
• System: Carburetor & Fuel Delivery System
• Application: Gas-Powered Outdoor Power Equipment
• Compatible Brands: Husqvarna, Jonsered, RedMax, and Craftsman
• OEM Status: Genuine Husqvarna OEM Part
• Condition: New
• Quantity: 1 Air Purge Bulb

Features & Benefits

• Genuine Husqvarna OEM replacement air purge bubble
• Also commonly referred to as a primer bulb
• Removes unwanted air from the carburetor and fuel system
• Helps circulate fuel for easier engine starting
• Supports reliable cold-start performance
• Ideal replacement for cracked, hardened, leaking, or damaged primer bulbs
• Helps restore proper fuel-system priming
• Manufactured for dependable OEM fit and operation
• Compatible with a broad range of Husqvarna outdoor power equipment

Applications

• Husqvarna 120, 130, 135, and 140 series chainsaws
• Husqvarna 340, 345, 346 XP, 350, and 353 series chainsaws
• Husqvarna 435, 440, 445, and 450 series chainsaws
• Husqvarna 455 Rancher and 460 chainsaws
• Husqvarna 545, 550 XP, 555, 560, and 562 series chainsaws
• Husqvarna 565, 572 XP, 585, and 592 XP chainsaws
• Husqvarna T435, T525, and T540 XP series chainsaws
• Select Husqvarna string trimmers and edgers
• Select Husqvarna hedge trimmers and pole saws
• Select Husqvarna handheld blowers
• Select Husqvarna power cutters
• Select compatible Jonsered, RedMax, and Craftsman equipment

Important Notes

• Verify compatibility with your specific equipment model and serial or manufacturing number before ordering.
• Designed as a genuine OEM Air Purge Bubble / Primer Bulb for equipment requiring part number 503936601.
• Husqvarna's official parts information describes 503936601 as an air purge bulb that removes air from the carburetor and fuel system to assist with engine starting.
• This part has extensive compatibility; PartsTree lists 503936601 for more than 1,000 equipment models, so model verification is recommended before purchase.
• This listing is for the air purge bubble / primer bulb only. Carburetors, fuel lines, fuel filters, fuel tanks, grommets, fittings, and additional fuel-system components are sold separately unless otherwise specified.
• Inspect the fuel lines and surrounding fuel-system components when replacing a deteriorated primer bulb. Fuel exposure and age can cause nearby flexible components to harden, crack, or leak as well.
• Replace a cracked or damaged air purge bulb promptly to help restore proper fuel circulation, easier starting, and dependable equipment operation.