15.3in Flavorizer Bars for Weber Spirit 300 Series - Heat Shield

In this review the Uniflasy 15.3in Flavorizer bars are evaluated as a direct replacement for Weber Spirit 300 series grills with front-mounted control panels. The bottom line: these heavy duty 16GA porcelain enameled steel heat plates are for grill owners who need a snug, durable replacement that restores even heat distribution and protects burners. The review finds them easy to install, long lasting in daily use, and a practical value for anyone repairing a Spirit E or S 300 series (model years 2013 and newer).

Key Features

• Exact fit for front-control models: Designed to fit Spirit E-310, E-320, E-330 and Spirit S-310, S-320, S-330 models with front-mounted controls for straightforward replacement.
• Heavy duty construction: Made from 16GA porcelain enameled steel, the bars resist wear while providing a stable surface that radiates heat evenly.
• Protects burners: These flavorizer bars shield burner tubes from oil and drippings, reducing flare-ups and lengthening burner life.
• Easy to clean: Smooth porcelain surface sheds oil and food residue so cleaning with soap and water plus a brush is simple.
• Pack of five: The set includes five bars sized 15.3in x 2.6in x 2.5in so the whole cooking area is covered in one purchase.
• Packed for transit: Units are shipped protected to reduce edge damage, arriving ready to drop into the grill.

Who It's For

This replacement set is aimed at owners of Weber Spirit 300 series grills with front-mounted controls from 2013 and newer who want a like-for-like, heavy gauge heat plate. It is ideal for home grillers who value even heat distribution, burner protection, and an easy DIY swap that usually drops into place within seconds.

People who should look elsewhere include owners of Spirit 300 models with side-mounted control knobs or older Spirit E-310 units from 2007-2012, since this 15.3in length will not fit those configurations. If a longer heat plate is needed, a different length must be chosen.

Pros & Cons

Pros

• Strong 16GA porcelain enameled steel construction feels durable and heavy-duty.
• Fits front-control Spirit 300 series models precisely and installs quickly.
• Improves heat spread and protects burners from drippings, reducing flare-ups.
• Good value: customers report solid performance and longevity for the price.

Cons

• Not compatible with Spirit 300 models that have side-mounted control knobs, so model confirmation is required before purchase.
• Porcelain coating can chip if handled roughly during installation or transit, though items are packed to minimize this risk.

Specifications

Compatibility	Weber Spirit E-310, E-320, E-330, S-310, S-320, S-330 (front control, 2013+)
Also fits	Multiple Weber model numbers listed for Spirit 300 and Spirit II 300 series
Material	16GA porcelain enameled steel
Dimensions	15.3 in L x 2.6 in W x 2.5 in H
Package contents	Set of 5 flavorizer bars
Function	Even heat distribution; burner protection; reduced flare-ups

Our Verdict

The Uniflasy 15.3in Flavorizer bars are a practical, cost-effective replacement for owners of front-control Weber Spirit 300 series grills from 2013 onward. They restore even heat, protect burners, and are built from heavy 16GA porcelain enameled steel for durability, making them a smart buy for homeowners who want reliable performance without replacing the whole grill.

Frequently Asked Questions

Will these fit my Spirit 300?
They fit Spirit models with front-mounted controls from 2013 and newer; they do not fit Spirit 300 models with side-mounted control knobs.

How many bars are included?
The package includes five flavorizer bars sized 15.3 in long to cover the cooking area of compatible grills.

How do I clean them?
Clean with a grill brush, soap and water, then dry completely with a towel to prevent moisture before storage.