This model-specific reference organizes the SF-25FQ furnace into three service zones: cabinet and ductwork, burner and gas components, and the vent and blower system. Compare the diagram position to the reference number before selecting a replacement.
Select a linked part number to view its details and availability. Match the furnace model and serial-number range before ordering.
1. Cabinet, thermostat and duct layout
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 1A | 102316 | 1 | CABINET FRONT ASSEMBLY 2-HOLE |
| 2 | 161154 | 1 | THERMOSTAT, WALL (WHITE) |
| 5 | 102327 | 1 | CABINET ASSEMBLY |
| 6 | 50733 | 1 | COVER, DUCT |
| 7 | 50715 | 1 | DUCT COLLAR, 4 IN. |
2. Burner, manifold and electrode references
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 9 | 171743 | 1 | MANIFOLD ASSY, COMPLETE |
| 11 | 180306 | 1 | ORIFICE, #53 |
| 12 | 71263 | 1 | GASKET, BURNER ACCESS COVER |
| 12 | 525031 | 1 | SERVICE KIT, GASKET BURNER ACCESS COVER |
| 13 | 121704 | 1 | PLATE, TINNERMAN |
| 16 | 62933 | 1 | PLATE, SECONDARY AIR (FRONT) |
| 19 | 62935 | 1 | PLATE, SECONDARY AIR, BOTTOM |
| 22 | 232286 | 1 | ELECTRODE, SINGLE PROBE W/ WIRE (L SHAPE) - Above Serial No 934701426 Ending Serial No 171416095 |
| 22 | 525009 | 1 | SERVICE KIT, ELECTRODE W/GROMMET (L SHAPE) - Above Serial No 934701426 Ending Serial No 171416095 |
| 22 | 233222 | 1 | ELECTRODE, SINGLE PROBE WITH WIRE USE 233306 |
| 22 | 233306 | 1 | ELECTRODE & WIRE ASSY (STRAIGHT) - Above Serial No 171416095 |
| 22 | 525051 | 1 | SERVICE KIT ELECTRODE, STRAIGHT - Above Serial No 171416095 |
| 23 | 10762 | 1 | BURNER ASSEMBLY |
| 24 | 70963 | 1 | GROMMET |
| 26 | 161122 | 1 | GAS VALVE, 3/8 INLET NPT X 3/8 INVERTED OUTLET |
| NS | 521074 | 1 | SOLENOID KIT FOR WHITE RODGERS VALVES |
| NS | 521075 | 1 | SOLENOID KIT FOR SEVEN UNIVERSE VALVES |
| 27 | 171576 | 1 | PIPE ASSY, GAS INLET |
| 29 | 170374 | 1 | GAS FITTING, 90° ELBOW |
| 29 | 525025 | 1 | SERVICE KIT, FITTING BRASS 3/8 90 DEG ELBOW |
3. Vent, blower and ignition assemblies
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 31 | 260553 | 1 | VENT CAP AND EXHAUST TUBE ASSEMBLY |
| 32 | 51249 | 1 | VENT TUBE ASSEMBLY INTAKE |
| 34 | 390852 | 1 | COMBUSTION AIR HOUSING (FRONT) |
| 35 | 121929 | 1 | SCREW, #8 - 18 X 2 1/4 |
| 36 | 121928 | 1 | SCREW 6-19 X 1/2 PH PH |
| 37 | 390848 | 1 | COMBUSTION AIR HOUSING (REAR) |
| 38 | 350122 | 1 | COMBUSTION AIR WHEEL USE 350184 |
| 38 | 350184 | 1 | WHEEL, COMBUSTION AIR |
| 39 | 71084 | 1 | GASKET, FIREWALL COMBUSTION AIR |
| 40 | 233004 | 1 | MOTOR ASSEMBLY W/GASKET |
| 41 | 121945 | 2 | SCREW # 4-20 X 5/8 |
| 42 | 391039 | 1 | BLOWER ASSY, ROOM AIR, FRONT |
| 42 | 121857 | 1 | SCREW #8-18 X 1/2 |
| 43 | 121857 | 4 | SCREW #8-18 X 1/2 |
| 44 | 391035 | 1 | BLOWER HOUSING, ROOM AIR, REAR |
| 45 | 232261 | 1 | SWITCH, SAIL USE 233382 |
| 45 | 233382 | 1 | SAIL SWITCH |
| 45 | 525003 | 1 | SERVICE KIT, SAIL SWITCH |
| 48 | 232351 | 1 | ON/OFF SWITCH |
| 49 | 63446 | 1 | BRACKET, ON/OFF SWITCH |
| 50 | 520820 | 1 | MODULE BOARD, WAS SUPERCEEDED USE 521099 |
| 50 | 521099 | 1 | IGNITION CONTROL MODULE |
| 51 | 70973 | 1 | INSULATOR CAP, MODULE BOARD COIL |
| 52 | 350206 | 1 | WHEEL, ROOM AIR |
| 54 | 70362 | 1 | BUSHING, SNAP |
| 56 | 71206 | 1 | BUSHING, STRAIN RELIEF |
| 57 | 71262 | 1 | GASKET, FIREWALL, CHAMBER SIDE |
| 58 | 21225BK | 1 | CHAMBER ASSEMBLY, FINAL |
| 59 | 232504 | 1 | SWITCH, LIMIT USE 233532 |
| 59 | 233532 | 1 | SWITCH, LIMIT 160 DEGREE |
| 59 | 525006 | 1 | SERVICE KIT, LIMT SWITCH 160OPEN/120 CLOSED |
| 62 | 110792 | 1 | FIREWALL |
| 63 | 122001 | 4 | SCREW, #6-19 X 3/4 |
| 64 | 63610 | 1 | STOP, MODULE BOARD |
| 67 | 63616 | 1 | BRACKET HOUSING, ROOM & COMB AIR |
| NS | 2608A | 1 | FURNACE CORE REPLACEMENT RP-30FQ |
Replacement parts for this furnace
Shop components listed for the Suburban SF-25FQ. Each photo opens the corresponding product. Use the diagrams and serial ranges below to choose the correct version.
Ignition and control parts
Airflow and housing components
Burner, vent and duct parts
