Grill Patrol
Weber Parts Fitment

Weber Genesis vs Spirit parts: what crosses and what does not.

The Spirit 300 and Genesis 300 are different grills that share a model-number format (both have an E-310, an E-320, and an E-330). Some parts cross between them. Many do not. Ordering by family name ("300 series") without confirming the grill line is how a wrong part gets delivered. This guide shows what actually interchanges and what to confirm before ordering.

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Tell them apart The golden rule What crosses Get the right parts

The badge on the lid tells you which grill you have. Front-control 300-series flavorizer bars are the main cross-fit. Burner tubes and igniters do not cross between Spirit and Genesis.

Check the badge
Spirit vs Genesis
Crosses between them
Flavorizer bars (front-control 300)
Does NOT cross
Burner tubes, igniters
Golden rule
Grill line plus control location
  1. 1 Read the badge: Spirit or Genesis
  2. 2 Confirm control location: front or side
  3. 3 Use the cross-fit table below for each part
  4. 4 Confirm against the listing fitment note before ordering

First: tell your Spirit from your Genesis

Weber gave both the Spirit 300 and the Genesis 300 the same E-310, E-320, and E-330 model numbers. The badge is the definitive identifier. Use the table below to confirm which grill you have before shopping for parts.

Badge on lid or cart"Spirit" = Spirit line, "Genesis" = Genesis line
Grill widthGenesis 300 is noticeably larger and heavier than Spirit 300
Cookbox depthGenesis cookbox is deeper front to back than Spirit
Burner countBoth have 3 main burners in the 300 series; count alone does not separate them
Model numberSpirit: E-310/E-320/E-330; Genesis: E-310/E-320/E-330 (same digits, different grill)
When the model number alone is not enough

If you search for "E-310 burner tube" you will find results for both Spirit E-310 and Genesis E-310. They are different parts. Always add the grill line ("Spirit 300 E-310 burner tube" or "Genesis 300 E-310 burner tube") and confirm the fitment note on the listing.

The golden rule for Weber parts: grill line plus control location

Two things determine which Weber replacement part fits your grill:

  1. The grill line: Spirit or Genesis (not just "300 series"). Same model number, different grill.
  2. The control location: front-control (knobs on the front of the cookbox, 2013 and newer for Spirit) or side-control (older, knobs on the right table). Flavorizer bars especially differ by control location because they are shaped around the valve connections.

A part that fits a Spirit E-310 (front-control) may not fit a Genesis E-310, and a part that fits a front-control Spirit 300 will not fit an older side-control Spirit 300. Confirm both before ordering.

What interchanges and what does not

The table below covers the parts that wear out most often. The fitment here assumes front-control 300-series models for both Spirit and Genesis. Side-control models are a different situation.

PartCrosses between Spirit and Genesis 300?Notes
Front-control 300-series flavorizer barsYESBoth Spirit and Genesis 300 (front-control) use the same 17.5-inch bars
Cast-iron cooking gratesSOMESome 300-series grate sets cross-list for both grills; confirm your cookbox width before ordering
Burner tubesNOTube length and inlet diameter differ between Spirit and Genesis 300
IgnitersNODifferent module and electrode configuration between the two grills
Grease tray and catch panUSUALLY NOTPhysical dimensions differ; verify your exact model
Control valvesNODo not swap control valves between models

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The parts that genuinely cross between Spirit and Genesis 300

The front-control 300-series flavorizer bars are the clearest cross-fit example. Both Spirit 300 and Genesis 300 (front-control) use the same 17.5-inch bars. The cast-iron grate set is also cross-listed for some models. Confirm your grill is the front-control version and is the 300 series before ordering.

Both verified for the front-control Weber Spirit 300 and Genesis 300. Confirm your grill is the front-control 300 series before ordering.

Parts that are specific to each grill: use these searches

These parts do not cross between Spirit and Genesis. Use the correct search for your grill line and confirm measurements or model fitment before ordering.

FAQ

Do Weber Spirit and Genesis share any parts at all?

Yes, a few. The front-control 300-series flavorizer bars (the B00FLRBUOW set) fit both the Spirit 300 and the Genesis 300 with front-mounted controls. Some grate sets are also cross-listed. But the burner tubes, igniters, and most structural parts are specific to each grill. Confirm the fitment note on any listing before ordering.

Why does my Genesis 300 have the same model number as a Spirit 300?

Weber used the same E-310 / E-320 / E-330 numbering across both the Spirit and Genesis lines. The badge on the lid or cart is the reliable identifier, not the model number. A Genesis E-310 and a Spirit E-310 are different grills despite sharing a number.

How do I tell my Spirit 300 from my Genesis 300 if the badge has worn off?

Compare physical size. A Genesis is noticeably larger and heavier. The cookbox is wider and deeper front to back. If both grills are roughly the same size, compare the side tables, the grease system, and the casting thickness. A Genesis feels like a substantially larger grill when you stand next to both.

Will Spirit 300 burner tubes fit a Genesis 300?

No. Spirit 300 burner tubes are different in length and inlet diameter from Genesis 300 tubes. Ordering by "Spirit 300" or "Genesis 300" pulls different parts. Match to your specific grill line before buying.

Do front-control and side-control models of the same grill share parts?

Not for flavorizer bars or igniters. The physical layout of the valve connections is different between front-control and side-control designs, so the bars that clear those valves are shaped differently. Always confirm your control location alongside your model when ordering these parts.

How old is a Spirit or Genesis 300 likely to be?

The front-control Spirit 300 series runs 2013 to present. The Genesis 300 series has had several generations going back to the early 2000s. Older side-control models of both grills use different parts. When in doubt, check the manufacture date on the rating plate inside the cookbox.

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