Weber 66303 Propane Manifold Genesis II 300 Series

What Problem This Part Solves

A worn, cracked, or leaking gas manifold can cause uneven heat, weak flames, ignition issues, or potentially unsafe propane delivery. Replacing it with the Weber 66303 restores proper gas flow, improves burner performance, and helps maintain consistent temperature control—bringing your Genesis II 300 Series grill back to reliable operation.

Key Features

• Genuine Weber OEM propane manifold
• Engineered for Genesis II 300 Series grills
• Provides even gas flow to main burners
• Integrated valves for precise flame adjustment
• Durable construction suited for outdoor use

Compatibility / Fits Models

Fits Weber Genesis II 300 Series propane grills

Weber Models

61000001, 61010001, 61010201, 61060001, Genesis II E-310

Confirm your grill’s exact model number and fuel type before ordering. This manifold is for propane models only.

Installation / Use Instructions

Turn off the propane supply and disconnect the tank.
Remove control knobs and access panel to access the existing manifold.
Detach the old manifold from the burner tubes and gas line.
Install the new Weber 66303 manifold and reconnect all fittings.
Reinstall knobs and access panel, then perform a gas leak test before use.

Why Buy From Bar-B-Que.com

Trusted grill experts since 1974

Genuine replacement parts and premium accessories

Fast nationwide shipping

Family-owned with real product support

FAQ Section

Does this fit my grill?
This propane manifold fits Weber Genesis II 300 Series propane grills. Verify your exact model number and fuel type before purchasing.

What is this part made of?
The manifold assembly is made of durable metal tubing and integrated valve components designed to withstand outdoor grilling conditions.

How long should this part last?
With proper installation and routine care, an OEM manifold can last many seasons. Replace if performance issues, wear, or leaks arise.

How do I install it?
Disconnect the propane tank, access the old manifold, remove it, install the new unit with original hardware, reconnect gas lines, and perform a leak test before operation.

Why choose this replacement part over others?
This is a genuine Weber OEM propane manifold designed specifically for Genesis II 300 Series grills, ensuring proper fit, safe gas delivery, and reliable heat performance.