Suburban 525051 Furnace Igniter Electrode Assembly (Replaces 233306, 233222) – SFQ / FQ Series

Reliable Ignition for Suburban “Quiet” Series RV Furnaces

The Suburban 525051 igniter electrode assembly is a genuine OEM replacement designed for Suburban “Q” (Quiet) and “FQ” series RV furnaces. This electrode generates the spark required to ignite the burner and also functions as a flame sensor to ensure safe and consistent furnace operation.

This part is commonly supplied as an assembly kit and is used on newer Suburban furnace designs with updated ignition systems.

If your furnace clicks but fails to ignite, or cycles without producing heat, a worn or faulty electrode is a common cause.

Supersession Information

• Current Part Number: 525051

• Replaces / Former Part Numbers: 233306, 233222

These earlier part numbers have been replaced by 525051 and are fully interchangeable.

Compatibility

Primary Compatibility: SF, SFQ, and SFV Series Furnaces

SF / SFQ / FQ Series Models

• SF-20Q
• SF-25Q
• SF-30Q
• SF-35Q
• SF-20FQ
• SF-25FQ
• SF-30FQ
• SF-35FQ

SFV Series (Multi-Position Furnaces)

• SFV-35Q
• SFV-35FQ
• SFV-42Q
• SFV-42FQ

Park Model Furnaces

• DD-17P

Important Serial Number Note

For many SFQ models, compatibility is typically specified as:

• Serial Number above 171416095

Always verify your furnace model and serial number before ordering to ensure proper fitment.

Features & Benefits

• Genuine Suburban OEM electrode assembly
• Designed for newer “Q” and “FQ” furnace systems
• Provides spark ignition and flame sensing
• Often supplied as a complete assembly kit
• Direct replacement for parts 233306 and 233222
• Helps restore reliable ignition and safe operation

Specifications

• Brand: Suburban
• Part Number: 525051
• Replaces: 233306, 233222
• Type: Igniter electrode assembly
• Application: RV furnace ignition system
• Designed For: Q and FQ series furnaces

When Do You Need This Electrode?

Replace your igniter electrode if you notice:

• Furnace clicking but not igniting
• No flame or delayed ignition
• Intermittent heating
• Furnace shuts down shortly after startup
• Visible wear, corrosion, or damage

Pro Tip

Ignition problems are often related to multiple components. If you're replacing the electrode, it's a good idea to also inspect:

• Sail switch
• Limit switch
• Control board

Replacing these together can help avoid repeat service issues.

FAQ

Q: Is this the same as part 233306?
A: Yes. Part 525051 replaces both 233306 and 233222 and is fully interchangeable.

Q: Will this replace 232286?
A: No. This electrode is designed for newer Q/FQ furnace systems and is not a direct replacement for 232286.

Q: How do I confirm compatibility?
A: Verify your furnace model and confirm your serial number meets the required range (typically above 171416095 for SFQ models).