Suburban RV Furnace Motor | 521138 | NT-34 / NT-40 | 12V

Restore reliable furnace airflow with the Suburban Replacement Furnace Fan Blower Motor (Part #521138). Genuine Suburban OEM blower motor for NT-34 and NT-40 furnace models. Durable 12V motor with quiet operation — direct replacement for worn or faulty motors.

What This Motor Does

The 521138 is the blower motor in your Suburban NT-34 or NT-40 furnace. It circulates air through the furnace and pushes heated air out through your RV's ductwork. When the motor fails, symptoms typically include:

• Furnace ignites but no air comes through vents
• Loud grinding, squealing, or unusually loud operation
• Furnace starts and immediately shuts off (safety limit trips due to no airflow)
• Slow blower ramp-up or intermittent operation

Compatible Suburban Furnace Models

Direct replacement blower motor for:

• NT-34
• NT-40

Verify your existing furnace is one of these NT-34 or NT-40 variants before ordering.

Related Suburban Furnace Motors — Different NT Models

If your furnace is a different NT-series model, a different motor is required:

• Suburban Furnace Motor 521137 — for NT-30 M/S/SP furnaces
• Suburban Furnace Motor 521138 (this listing) — for NT-34 and NT-40 furnaces

Design and Performance

• Direct replacement for worn or faulty original motors — simplifies maintenance
• Quiet operation — helps maintain a peaceful environment inside your camper
• Built for RV heating system demands — long-lasting durability

Physical and Electrical Specifications

• Voltage: 12V
• Color: Black
• Weight: 2.5 lbs

Cross-Reference Part Numbers

• Part Number: 521138

⚠️ Professional Installation Recommended

Motor replacement involves furnace disassembly, careful handling of the blower wheel, and reassembly with proper alignment for balanced operation. Installation should be performed by a qualified RV service technician unless you have prior experience with Suburban furnace service.

Limited 90-Day Manufacturer Warranty

Genuine Suburban OEM

Key Features

• Genuine Suburban OEM RV furnace fan blower motor
• Part number: 521138
• For Suburban NT-34 and NT-40 furnaces
• Direct replacement for worn/faulty original motors
• Quiet operation
• Durable construction for long-lasting use
• 12V, black finish, 2.5 lbs
• Different NT models covered: 521137 for NT-30 M/S/SP
• Backed by limited 90-day manufacturer warranty

Specifications

• Brand: Suburban
• Part Number: 521138
• Type: RV Furnace Fan Blower Motor
• Compatible Furnace Models: NT-34, NT-40
• Voltage: 12V
• Color: Black
• Weight: 2.5 lbs
• Different Model Sibling: Suburban 521137 (for NT-30 M/S/SP furnaces)
• Warranty: Limited 90-day manufacturer warranty