Husqvarna 539105245 Rubber Grommet – Genuine OEM Replacement Equipment Grommet
Part Number: 539105245
Category: Lawn Tractor, Riding Mower & Fuel System Components
Type: Rubber Fuel Tank Grommet – Genuine OEM Replacement Grommet
The Husqvarna 539105245 Rubber Grommet is a genuine OEM replacement component designed for select Husqvarna lawn tractors, riding mowers, zero-turn mowers, and compatible outdoor power equipment. Husqvarna parts documentation identifies 539105245 as a grommet, while application information identifies its primary function as providing a sealed connection at the fuel tank/fuel-line fitting.
Product Specifications
- Part Number: 539105245
- Manufacturer: Husqvarna
- Product Type: Rubber Grommet
- OEM Description: Grommet / Rubber Grommet
- Alternate Description: Fuel Tank Grommet / Fuel Fitting Grommet / Tank Seal Grommet
- Material: Rubber
- Component Type: Fuel System / Sealing Component
- Primary Application: Lawn Tractor / Riding Mower / Zero-Turn Mower
- System: Fuel Tank / Fuel Supply System
- Function: Seals and Secures the Applicable Fuel-Line Fitting at the Fuel Tank
- Installation Location: Fuel Tank – Model Dependent
- Associated Components: Fuel Tank / Fuel Fitting / Fuel Line / Fuel Tank Stem
- Replacement Type: Direct OEM Replacement
- OEM Status: Genuine Husqvarna OEM Part
- Condition: New
- Quantity: 1 Rubber Grommet
- Part Number Reference: 539105245
- Alternate Number Format: 539 10 52-45
- UPC: 705788566266
Features & Benefits
- Genuine Husqvarna OEM replacement component
- Durable rubber construction
- Designed for compatible Husqvarna fuel systems
- Creates a tight seal at the applicable fuel-tank connection
- Helps secure the fuel fitting within the tank
- Helps prevent fuel leakage around the fitting
- Provides a flexible interface between the tank and fitting
- Designed to match the original equipment configuration
- Application-specific dimensions and sealing profile
- Suitable for replacing hardened, cracked, torn, or leaking grommets
- Helps restore the integrity of the fuel-system connection
- Direct replacement for equipment specifying 539105245
- Sold individually
Fuel Tank Grommet Function
The 539105245 Rubber Grommet serves as a sealing interface between the applicable fuel tank and fuel-line fitting.
A simplified fuel-system arrangement can be represented as:
Fuel Tank → 539105245 Rubber Grommet → Fuel Fitting / Stem → Fuel Line → Engine Fuel System
The grommet fits securely around the applicable fuel fitting while sealing against the fuel tank opening.
Published application information specifically states that 539105245 connects the fuel-line fitting to the fuel tank.
Fuel System Sealing
A secure seal is important because the fuel tank must contain gasoline while allowing fuel to travel through its intended outlet.
The grommet helps:
- Seal the fuel tank opening
- Secure the fuel fitting
- Reduce the possibility of leakage
- Maintain proper fitting alignment
- Prevent excessive movement at the connection
If the rubber deteriorates, the connection may no longer remain fuel-tight.
Rubber Construction
The 539105245 is manufactured from rubber material designed to provide the flexibility required for its sealing function.
Rubber allows the grommet to conform around the fuel fitting and tank opening while maintaining pressure against the adjoining surfaces.
Over extended service, however, rubber can deteriorate due to:
- Age
- Heat
- Fuel exposure
- Environmental conditions
- Repeated vibration
- Mechanical stress
Eventually, an older grommet may harden or crack and require replacement.
Common Reasons for Replacement
Replacement of the 539105245 Rubber Grommet may be appropriate if the original has:
- Become brittle
- Developed cracks
- Torn
- Hardened
- Become distorted
- Lost elasticity
- Developed visible deterioration
- Become loose in the fuel tank
- Failed to hold the fuel fitting securely
- Developed leakage around the connection
- Been damaged during fuel-system service
- Been removed and can no longer provide a reliable seal
Published service information specifically notes that the grommet can become brittle and crack over time, requiring replacement to maintain the seal.
Possible Signs of Grommet Failure
A worn or damaged fuel-tank grommet may contribute to:
- Fuel leakage around the tank fitting
- Fuel odor around the mower
- Dampness around the tank outlet
- Loose fuel fitting
- Visible cracking in the rubber
- Fuel residue around the grommet
- Grommet movement within the tank opening
- Difficulty maintaining a secure fuel connection
Any suspected gasoline leak should be addressed before operating the equipment.
Grommet Inspection
Inspect the existing 539105245 for:
- Cracking
- Splitting
- Hardening
- Swelling
- Distortion
- Tears
- Missing rubber
- Loss of elasticity
- Loose fit
- Fuel seepage
Pay particular attention to the area where the fuel fitting passes through the grommet.
Fuel Fitting Inspection
Whenever replacing the grommet, inspect the associated fuel fitting or stem.
Check for:
- Cracking
- Distortion
- Damaged sealing surfaces
- Excessive wear
- Corrosion
- Loose connection
- Physical damage
A damaged fuel fitting can continue to leak even after installing a new grommet.
Fuel Line Inspection
The fuel line should also be inspected while servicing the grommet.
Look for:
- Cracking
- Hardening
- Splitting
- Swelling
- Abrasion
- Loose connections
- Fuel leakage
Replacing deteriorated fuel-system components together can help prevent repeated disassembly.
Fuel Tank Inspection
Inspect the tank around the grommet opening for:
- Cracks
- Distortion
- Damage
- Contamination
- Debris
- Damaged sealing surfaces
A replacement grommet requires a serviceable tank opening to maintain the intended seal.
Documented Husqvarna Applications
The 539105245 Rubber Grommet is used across numerous Husqvarna mower configurations. Published fitment information includes examples such as:
- Husqvarna 289823
- Husqvarna 4219F
- Husqvarna 4222F
- Husqvarna 460ZX
- Husqvarna MZ 61
- Husqvarna Z 16
- Husqvarna Z 18
- Husqvarna Z 4218
- Husqvarna Z 4824
- Husqvarna RZ 5424
Official Husqvarna documentation for the RZ 5424, product number 966659301-03, lists 539105245 – GROMMET within the applicable parts assembly.
Exact compatibility should always be verified using the complete mower model and product number.
RZ 5424 Application
Official Husqvarna illustrated parts documentation for the RZ 5424 lists:
Ref. 22 – 539105245 – GROMMET
The same section includes fuel-system-related components such as a fuel tank stem, gas line, and hoses, supporting the grommet's use within the applicable tank/fuel-system arrangement.
Fuel Tank Grommet vs. General Equipment Grommet
Although 539105245 may simply be described as a “Rubber Grommet” in parts documentation, its documented application is specifically associated with the fuel tank connection.
Fuel Tank Grommet
Provides a sealing interface between the fuel tank and applicable fuel fitting.
General Protective Grommet
Typically protects wiring, cables, hoses, or other components passing through an opening.
For 539105245, the fuel-tank sealing application should be considered the primary function when used in documented mower configurations.
Installation Considerations
Before replacing 539105245:
- Park the mower on a flat, stable surface.
- Shut off the engine completely.
- Remove the ignition key.
- Allow the engine and exhaust components to cool.
- Disconnect the spark plug or battery where appropriate.
- Work in a well-ventilated area away from flames or ignition sources.
- Drain the fuel tank as required.
- Clean dirt and debris from around the fuel fitting.
- Disconnect the applicable fuel line.
- Carefully remove the fuel fitting or stem.
- Remove the old rubber grommet.
- Inspect the fuel-tank opening.
- Inspect the fuel fitting.
- Clean the sealing area as appropriate.
- Install the new 539105245 Rubber Grommet into the correct opening.
- Make sure the grommet is fully seated.
- Carefully install the applicable fuel fitting.
- Reconnect the fuel line.
- Add fuel as appropriate.
- Carefully inspect the connection for leakage before operating the mower.
Published service guidance recommends draining the gas tank before installation, wearing protective gloves, and performing the repair in a well-ventilated area.
Installation Tips
During installation:
- Work only with a cool engine
- Keep gasoline away from sparks and open flames
- Drain the fuel tank before removing the grommet
- Clean the area before opening the fuel system
- Prevent dirt from entering the tank
- Inspect the fuel fitting while removed
- Inspect the fuel line for cracking
- Make sure the new grommet sits evenly in the tank opening
- Avoid cutting or pinching the rubber during installation
- Carefully insert the fuel fitting
- Verify the connection is secure
- Check thoroughly for fuel leakage before starting the engine
Why Correct Grommet Fit Matters
Fuel-system grommets that look similar can differ in:
- Inside diameter
- Outside diameter
- Groove dimensions
- Overall thickness
- Rubber composition
- Fuel-fitting compatibility
- Tank-opening compatibility
An incorrectly sized grommet may fail to seal or may not securely retain the fuel fitting.
For this reason, use 539105245 as the primary fitment reference.
Maintenance Tips
To help maintain a reliable fuel-system connection:
- Inspect the grommet periodically
- Check for fuel seepage
- Replace hardened or cracked rubber
- Inspect the fuel fitting
- Check fuel lines for deterioration
- Keep the tank connection clean
- Investigate fuel odors promptly
- Avoid operating equipment with a known fuel leak
- Replace damaged fuel-system components as necessary
- Verify the connection after fuel-system service
Important Notes
- Verify compatibility with your exact equipment model, product number, serial number, and production revision before ordering.
- Match part number 539105245 directly with the applicable OEM parts documentation.
- 539105245 is identified by Husqvarna documentation as a grommet.
- Published application information identifies 539105245 as a fuel tank grommet that connects the fuel-line fitting to the fuel tank.
- The grommet helps create a tight seal at the applicable fuel-tank connection.
- The component is manufactured from rubber and is sold individually.
- Published product information lists UPC 705788566266.
- The exact installation location and associated fuel fitting depend on the equipment model.
- Do not assume every Husqvarna mower or lawn tractor uses 539105245.
- Do not select a replacement grommet solely by approximate size or visual similarity.
- Inside diameter, outside diameter, groove profile, thickness, fuel-fitting dimensions, and tank-opening compatibility must match.
- Use 539105245 as the primary fitment reference.
- Inspect the fuel fitting, fuel line, and tank opening whenever replacing the grommet.
- Replace cracked or deteriorated fuel lines as necessary.
- Never operate equipment with a known gasoline leak.
- Keep gasoline and fuel vapors away from flames, sparks, cigarettes, heaters, and other ignition sources.
- Work in a well-ventilated area when servicing the fuel system.
- Drain the fuel tank before removing the existing grommet where required.
- Do not cut, drill, trim, grind, stretch excessively, or otherwise modify the replacement grommet to force fitment.
- Check the repaired connection carefully for leakage before starting or operating the equipment.
- This listing is for one Husqvarna 539105245 Rubber Grommet only unless otherwise specified. Fuel tank, fuel fitting/stem, fuel line, filter, clamps, and other fuel-system components are sold separately unless explicitly included.
- Match Husqvarna 539105245 with your equipment's OEM parts documentation before ordering to ensure proper fitment.
