Husqvarna 578931503 Fuel Cap Assembly – Replacement Lawn & Garden Equipment Fuel Tank Cap Component

Part Number: 578931503
Category: Lawn & Garden Equipment Replacement Parts
Type: Fuel Cap Assembly – Replacement Lawn & Garden Equipment Fuel Tank Cap Component

The Husqvarna 578931503 Fuel Cap Assembly is a replacement fuel tank closure component designed for compatible Husqvarna lawn and garden equipment. Installed at the applicable fuel tank opening, the cap assembly helps securely close the tank, contain fuel, and protect the fuel system from external dirt and debris. It is suitable for replacing a cracked, worn, damaged, leaking, missing, or otherwise unserviceable fuel cap when Husqvarna part number 578931503 is specified.

Product Specifications

• Part Number: 578931503
• Brand: Husqvarna
• Product Type: Fuel Cap Assembly
• Component Type: Replacement Fuel Tank Cap Component
• Application: Lawn & Garden Equipment
• System: Fuel Storage & Fuel Tank System
• Function: Fuel Tank Closure, Fuel Containment & Tank Protection
• Configuration: Fuel Cap Assembly
• Condition: New

Features & Benefits

• Replacement fuel cap assembly for compatible Husqvarna equipment
• Designed to close the applicable fuel tank opening
• Helps contain fuel during normal equipment operation and handling
• Helps protect the fuel tank opening from dirt, dust, grass, moisture, and other external contamination
• Supports the original fuel tank closure configuration when correctly installed
• Provides a secure interface with the applicable fuel tank neck or opening
• Helps restore proper tank closure when the original cap is damaged, worn, or missing
• Suitable for replacing a cracked, distorted, worn, leaking, loose, damaged, missing, or otherwise unserviceable fuel cap
• Useful for fuel-system maintenance, equipment repair, and restoration
• Direct replacement option when Husqvarna part number 578931503 is specified

Applications

• Husqvarna lawn and garden equipment
• Compatible Husqvarna outdoor power equipment
• Engine fuel tank assemblies
• Fuel storage systems
• Fuel tank fill openings
• Fuel tank closure systems
• Engine fuel-system maintenance
• Fuel tank repair and restoration
• Replacement of damaged or missing fuel caps
• Applications specifying Husqvarna 578931503

Important Notes

• Verify part number 578931503 before ordering
• Confirm compatibility with your specific Husqvarna equipment model and fuel tank configuration
• The supplied product information identifies this component as a Fuel Cap Assembly
• The exact equipment models and fuel tank configurations compatible with this cap are not identified in the supplied product information
• The exact cap diameter, thread size, thread pitch, tank-neck dimensions, material, color, sealing configuration, attachment method, and pressure characteristics are not identified
• Do not assume compatibility with another Husqvarna fuel cap based solely on appearance, approximate dimensions, or tank opening size
• Do not assume the cap uses a specific threaded, bayonet, quarter-turn, snap-on, press-fit, or other attachment design unless confirmed by the applicable Husqvarna parts information
• The supplied information does not identify whether this fuel cap is vented or non-vented
• Do not substitute a vented cap for a non-vented design, or a non-vented cap for a vented design, without confirming the requirements of the specific fuel system
• Fuel tank venting can affect fuel delivery and tank operation, so any incorporated vent passages should remain unobstructed and unmodified
• Because this component is identified as an assembly, the exact included pieces are not identified in the supplied product information
• Do not assume that a gasket, O-ring, seal, tether, vent valve, filter, insert, retainer, or other component is included unless specifically stated
• Compare the original cap's part number, overall shape, tank-neck interface, sealing surface, attachment method, and any visible venting features
• Inspect the associated fuel tank opening and filler neck for cracks, deformation, damaged threads, contamination, corrosion, or other damage that could prevent proper cap engagement or sealing
• If the original cap was leaking, inspect the cap, seal, filler neck, tank, and surrounding fuel-system components rather than assuming the cap alone caused the leak
• Keep the fuel tank opening clean during service to prevent contaminants from entering the fuel system
• Do not drill, plug, enlarge, restrict, or otherwise modify any venting passages incorporated into the cap
• Do not cut, grind, heat, reshape, rethread, or modify the fuel cap to force compatibility with an incorrect tank
• Secure the cap according to the equipment's intended design and avoid using excessive force that could damage the cap or tank neck
• This listing is for the fuel cap assembly; do not assume that a fuel tank, fuel lines, filters, fittings, grommets, valves, seals, tether, or other fuel-system components are included unless specifically stated
• Fuel and fuel vapors are flammable; shut off the equipment, allow the engine to cool, and refuel or service the fuel system in a well-ventilated area away from flames, sparks, cigarettes, and other ignition sources
• Clean up any spilled fuel and allow vapors to dissipate before starting or operating the equipment
• After installation, verify proper cap engagement, retention, tank-neck fit, sealing, absence of visible fuel leakage or abnormal fuel odor, and overall fuel-system operation before returning the equipment to normal service