Weber Genesis 300 Igniter Button Kit (2011–2013) with AA Lithium Battery, OEM Fit

Weber 66836 is a complete OEM igniter button kit—button, retention nut, AA lithium battery and instructions—to restore electronic ignition on compatible Genesis 300 grills.

If your Genesis 300-series grill from 2011–2013 won’t spark, this genuine Weber replacement provides the exact-fit components to get your ignition working again. Supplied as a small, ready-to-install kit, it replaces part #40277202 and includes the battery and mounting nut so you won’t need extra parts. Installation is straightforward for anyone comfortable with basic grill maintenance.

Will this igniter button fit my Genesis grill?

This kit is designed specifically for Genesis 300 models built between 2011 and 2013 and matches Weber’s OEM specifications. Check the model number on your grill or your owner’s manual to confirm compatibility before ordering.

• Replaces Weber part number 40277202.
• Listed compatible model ranges include Genesis 300-series part numbers from 6511001 through 86670001.
• Manufactured to original Weber OEM tolerances for proper alignment and operation.

How easy is the installation and what comes in the box?

The kit arrives with everything needed to swap the failed igniter: the button/ignition module, a retention nut to secure it, one AA lithium battery, and a concise instruction sheet. Installation typically requires only a screwdriver and a few minutes of work—no specialist tools or wiring changes are required.

• Includes button/ignition module, retention nut, AA lithium battery, and instructions.
• Simple panel access and a single fastener to replace the unit.
• No soldering or electrical modifications—plug-in style replacement.

What should I expect in performance and reliability?

Because this is a genuine Weber OEM part, it’s built to match factory performance and fit. The included AA lithium battery supplies consistent spark power out of the box; replacing the battery periodically will keep ignition reliable over time.

• OEM quality ensures correct dimensions and spark alignment.
• AA lithium battery included for immediate operation after install.
• Durable retention nut secures the module against vibration and weather exposure.

Are there safety or maintenance tips I should follow?

Always disconnect any fuel source and ensure burners are cool before accessing the igniter. Replace the battery with the same chemistry (lithium AA) for optimum cold-weather performance, and routinely inspect the mounting nut and wiring for corrosion or looseness.

• Turn off gas supply and cool grill prior to replacing the igniter.
• Use AA lithium battery replacements for consistent spark strength.
• Inspect contacts and fasteners periodically to maintain reliable ignition.

Who is this for: This kit is intended for Genesis 300-series owners (2011–2013) and DIY grill restorers who need an accurate, factory-spec replacement for a faulty push-button igniter. It’s ideal if you want an easy, genuine Weber solution that includes the battery and mounting hardware so you can get back to grilling quickly without guessing at compatible parts.