521235 Suburban COMBUSTION WHEEL

Replaces 350184

Fits Models: SF-25/30/35F, SF25Q/FQ SFVH25Q/FQ (STARTING SERIAL NUMBER 194500640) 
SF30Q/FQ SFVH30Q/FQ (STARTING SERIAL NUMBER 194104640) 
SF35Q/FQ SFVH35Q/FQ (STARTING SERIAL NUMBER 194411914) 
SF42Q/FQ (STARTING SERIAL NUMBER 194203770) 
SFV35Q/FQ (STARTING SERIAL NUMBER 194203775)

The Suburban 521235 Combustion Wheel is the OEM replacement for the combustion‑air side of the blower assembly in several mid‑ and high‑output SF‑series RV furnaces. This wheel provides the precise combustion airflow required for proper ignition, flame stability, and safe furnace operation. A worn or unbalanced wheel can cause ignition lockouts, noisy operation, or insufficient combustion air.

This model replaces 350184 and is required on specific SF‑series furnaces beginning at the serial‑number ranges listed below.

Key Features

• OEM Suburban combustion‑air wheel

• Correct diameter, width, and hub fit for SF‑series high‑output housings

• Ensures proper combustion airflow for ignition and flame stability

• Balanced for smooth, quiet operation

• Direct‑fit replacement for 350184

Compatibility (with serial‑number requirements)

• SF‑25F / SF‑30F / SF‑35F

• SF‑25Q / SF‑25FQ / SFVH‑25Q / SFVH‑25FQ

  • Starting Serial Number: 194500640

• SF‑30Q / SF‑30FQ / SFVH‑30Q / SFVH‑30FQ

  • Starting Serial Number: 194104640

• SF‑35Q / SF‑35FQ / SFVH‑35Q / SFVH‑35FQ

  • Starting Serial Number: 194411914

• SF‑42Q / SF‑42FQ

  • Starting Serial Number: 194203770

• SFV‑35Q / SFV‑35FQ

  • Starting Serial Number: 194203775

These serial‑breaks ensure technicians select the correct wheel for the updated combustion‑housing design.