Generac 0D4570 Fuel Cap with Gauge & Vent – Genuine OEM Replacement Generator Fuel Tank Cap
Part Number: 0D4570
Category: Generator Parts → Fuel System Components → Fuel Tank Caps
Type: Generac 0D4570 Fuel Cap with Gauge & Vent – Genuine OEM Replacement Generator Fuel Tank Cap
The Generac 0D4570 Fuel Cap with Gauge & Vent is a genuine OEM replacement fuel-system component designed for compatible Generac generators. This assembly closes the fuel-tank opening while its integrated gauge helps the operator monitor the approximate fuel level. The vent supports proper tank pressure equalization as fuel is consumed. Manufactured to original equipment specifications, it provides the correct fit, sealing, venting, and fuel-level indication required when replacing a cracked, leaking, clogged, damaged, or missing generator fuel cap.
Key Features & Benefits
- Part Number: 0D4570
- Genuine OEM Generac replacement part
- Designed for compatible Generac generators
- Combination fuel cap, gauge, and vent assembly
- Helps seal the generator fuel-tank opening
- Integrated gauge indicates the approximate fuel level
- Vent supports proper fuel-tank pressure equalization
- Helps protect the fuel supply from dirt and debris
- Direct replacement for a damaged or missing fuel cap
- Manufactured to original equipment specifications
- Supports dependable generator fuel-system operation
Technical Specifications
- Part Number: 0D4570
- Manufacturer: Generac
- Product Type: Generator Fuel Tank Cap with Gauge and Vent
- Application: Fuel-tank closure, venting, and fuel-level indication
- Installation Location: Generator fuel-tank filler opening
- OEM Part: Yes
- Quantity: Sold Individually
Compatible Applications
The Generac 0D4570 Fuel Cap with Gauge & Vent is designed for use with select Generac generators and compatible fuel-tank assemblies.
Always verify the generator model, serial number, original part number, filler-neck dimensions, thread or attachment design, tank configuration, and applicable parts diagram before ordering to ensure proper compatibility.
Function of the Fuel Cap with Gauge & Vent
The 0D4570 Fuel Cap with Gauge & Vent is designed to:
- Close and seal the fuel-tank filler opening
- Help reduce fuel leakage and contamination
- Provide an approximate indication of remaining fuel
- Allow air to enter the tank as fuel is consumed
- Help prevent vacuum formation inside the fuel tank
- Support consistent fuel delivery to the engine
- Protect the fuel supply from dirt, moisture, and debris
- Restore the generator’s original fuel-cap functionality
A properly vented fuel cap is important because a blocked vent can restrict fuel flow and cause poor engine performance or stalling.
Common Signs Replacement Is Needed
Replace the fuel cap assembly if you notice:
- Cap is cracked, broken, or missing
- Fuel leaks around the filler opening
- Cap will not tighten or remain secure
- Fuel-level gauge is stuck or inaccurate
- Vent is clogged or damaged
- Engine stalls as fuel-tank vacuum develops
- Fuel odor is present around the tank
- Seal is hardened, cracked, or deteriorated
- Dirt or moisture enters around the cap
Fuel-flow problems may also result from contaminated fuel, clogged fuel lines, a restricted filter, or carburetor issues. Inspect the complete fuel system before ordering replacement parts.
Installation & Service Notes
- Shut down the generator and allow the engine to cool completely.
- Move the generator outdoors to a well-ventilated area before servicing the fuel system.
- Keep flames, sparks, cigarettes, and ignition sources away from the work area.
- Remove the existing fuel cap carefully.
- Inspect the fuel-tank filler neck for dirt, corrosion, cracks, or damage.
- Clean the filler area without allowing debris to enter the tank.
- Install the 0D4570 Fuel Cap securely on the designated filler opening.
- Confirm that the cap seats evenly and does not cross-thread.
- Verify that the gauge moves freely and the vent is unobstructed.
- Inspect the cap and filler opening for fuel leakage before operating the generator.
Important: Never remove the fuel cap while the generator is running or hot. Fuel and fuel vapors are highly flammable. Do not overfill the tank, and always leave the expansion space specified by the generator manufacturer.
Maintenance Recommendations
- Inspect the fuel cap and seal during routine generator maintenance.
- Keep the vent opening clean and unobstructed.
- Wipe dirt and debris from the filler area before removing the cap.
- Replace hardened, cracked, or leaking seals promptly.
- Check the gauge periodically for free movement.
- Avoid overtightening or cross-threading the cap.
- Store the generator with fuel only as directed by the manufacturer.
- Replace the assembly if the vent, gauge, or attachment mechanism fails.
- Use genuine OEM replacement parts to maintain proper fit, sealing, venting, and dependable fuel-system performance.
