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Weber Spirit SX-315 burner tubes

Spirit SX-315 LP mains use OEM 68950-class three-tube kits (68951 NG). Front-control Spirit 300 geometry — measure before mixing 69787 aftermarket.

moderate PT2H Spirit SX-315Spirit 315 Updated 2026-09-04

Clean versus clogged burner ports Left tube shows even open ports and a blue flame sketch. Right tube shows grease-clogged ports and a yellow uneven flame. BURNER TUBE · PORTS CLEAN Even blue cones. Every port open. CLOGGED Grease in the holes. Yellow, lift, dead spots. Ream with a bit smaller than the port. Do not drill oversized. Brass brush the row. Keep liquid out of the venturi / inlet. If the tube wall is lace under the ports, replace the set — do not patch holes.
Fig. — Burner tube: clean ports (left) versus clogged ports (right).
Top-down gas firebox layers Cooking grates on top, inverted-V flavorizer bars over the burner tubes, electrode at the left tube. TOP DOWN · GAS FIREBOX 1 cooking grates 2 flavorizer bars 3 burner tubes + ports 4 electrode (left tube) LAYERS (top → bottom) 1 Grates — food sits here 2 Flavorizer / heat tents 3 Burner tubes + ports 4 Electrode at left port Lift grates, then tents, to reach tubes. Gas off.
Fig. — Firebox, top down: grates, flavorizer bars, burner tubes, electrode.

Weber lists 68950 (LP) / 68951 (NG) burner tube kits for Spirit 310/315/320/325 series on current parts pages. SX-315 schematics use that kit plus a crossover (69413-class on some drawings). Aftermarket 69787 listings often claim Spirit 300 / Spirit II 300 — dry-fit electrode brackets and crossover shields before you keep the set.

Bars: SX-315 flavorizers. Related: Spirit E-310 tubes. Hub: Spirit.

Procedure

  1. Photograph plate (SX-315), three mains, crossover, and electrode.
  2. Tank off. Grates and five bars out.
  3. Release rear hardware. Slide tubes off orifices. Label positions.
  4. Sky-check. Clean ports if sound; replace if perforated.
  5. Dry-fit 68950/68951-class three mains + crossover. Inlet fully on brass.
  6. Electrode gap. Bars on. Grates on.
  7. Soap. Lid open. Light left and walk the crossover.
  8. Side burner: separate valve/electrode — not a fourth main tube from this kit.

FAQ

Is 68950 the same as 69787?

Weber’s 68950 kit is the current Spirit 310/315 LP naming; 69787 is the widely listed aftermarket/older Spirit 300 front-control set. Geometry is often close — still tape and dry-fit SX brackets.

Not affiliated with Weber.

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