15.3in Heavier Flavorizer Bars for Weber Spirit II 300 Series - 5-Pack

In this review of the 15.3in Heavier Flavorizer Bars by Uniflasy, the bottom line is simple: these are a practical, heavy-duty replacement for owners of Weber Spirit II 300 series grills with front-mounted controls who want even heat and durable protection for burners. The reviewer found the set straightforward to install, noticeably heavier than many aftermarket rivals, and finished in a black porcelain-enameled coating that resists sticking and makes cleaning easier. If you need a like-for-like replacement for Spirit E-310 style grills (model year 2013 and newer), this kit delivers core performance without unnecessary extras.

Key Features

• Direct fit: Designed specifically for Spirit II 300 series grills with front-mounted control panels, so owners of those models can expect an accurate replacement for their original flavorizer bars.
• Porcelain-enameled steel: The black enamel coating helps distribute heat more evenly, reduces flare-ups by shielding burners, and gives a smoother surface that is easier to clean.
• Heavier gauge construction: At a thicker 16GA build, these bars feel sturdier and are less prone to warping than thin alternatives, improving long-term durability and stability over the burners.
• Five-pack convenience: The set includes five bars, providing a complete replacement for the GS4 Spirit II 300 series layout and simplifying installation and fitment checks.
• Even heat and protection: These bars help radiate heat from burner tubes to cooking grates for more even cooking and protect the burner from dripping grease and charring.
• Easy maintenance: Smooth porcelain finish wipes clean with a brush, soap and water, and should be dried fully before storage to protect the coating.

Who It's For

This kit is best for owners of Weber Spirit II 300 series grills with front-mounted control panels (models like Spirit E-310, E-320, E-330, S-310, S-320, S-330 from 2013 onward) who need a straightforward, sturdy replacement for worn or damaged flavorizer bars. It also suits buyers who value a heavier gauge and a porcelain-enameled finish that balances heat distribution and ease of cleaning.

It is not the right choice for owners of Spirit 300 series grills that use side-mounted control knobs or older Spirit E-310 models from 2007-2012; those users should seek the longer 22.5in or model-specific kits. Confirm your grill's control layout and model year before purchasing.

Pros & Cons

Pros

• Good fit for compatible Spirit II 300 series grills and replacement for Weber 7636 style bars.
• Durable porcelain-enameled surface that resists sticking and is simple to clean.
• Heavy 16GA steel provides stability and better resistance to warping over time.
• Five-bar package covers the full cooking area for straightforward swap-out.

Cons

• Does not fit Spirit 300 series grills with side-mounted control knobs or older Spirit E-310 models (2007-2012), so fitment must be checked carefully.
• Porcelain enamel can chip if handled roughly during installation or cleaning, so care is required.

Specifications

Length	15.3 in
Width	2.6 in
Height	2.5 in
Material	Black porcelain-enameled steel
Thickness	16GA heavy duty
Package contents	5 flavorizer bars
Compatible models	Spirit II 300 series with front-mounted controls (2013+), GS4 Spirit II

Our Verdict

These 15.3in flavorizer bars are a solid, no-frills replacement for owners of compatible Spirit II 300 series grills who want heavy-gauge construction and the heat distribution benefits of a porcelain-enameled finish. They offer clear value when a direct-fit replacement is required, but buyers must confirm control-panel layout and model year since they do not fit side-control Spirit 300 series grills.

Frequently Asked Questions

Will these fit my Spirit E-310?
They fit Spirit E-310 models from 2013 and newer with front-mounted controls; they do not fit E-310 units from 2007-2012 with side-mounted controls.

How many bars are included?
The package includes five porcelain-enameled flavorizer bars to replace the full set on compatible grills.

How should I clean them?
Clean with a grill brush, warm soapy water and dry completely with a towel before storing to protect the enamel coating.