This SF-25Q 25,000 BTU furnace reference follows the original three-part drawing sequence. Review the front cabinet and thermostat first, then the burner and fuel hardware, and finally the fan, ignition and exhaust components.
Use the diagrams and parts tables together to identify each component, its quantity and any serial-number restrictions. Match the full furnace model and original part number before ordering.
SF-25Q exterior cabinet and distribution fittings
| Drawing reference | Manufacturer part number | Quantity | Component description |
|---|---|---|---|
| 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. |
SF-25Q burner, No. 53 orifice and electrode components
| Drawing reference | Manufacturer part number | Quantity | Component description |
|---|---|---|---|
| 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 |
| 14 | 63198 | 1 | PLATE, SECONDARY (BACK) |
| 15 | 121651 | 1 | SCREW 8-18 X 1/2 |
| 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 | 171574 | 1 | PIPE ASSEMBLY,GAS INLET |
| 28 | 62180 | 1 | CLAMP, WIRE |
SF-25Q blower motor, ducting, limits and exhaust
| Drawing reference | Manufacturer part number | Quantity | Component description |
|---|---|---|---|
| 31 | 260231 | 1 | VENT CAP & EXHAUST TUBE ASSY |
| 32 | 51248 | 1 | VENT TUBE, INTAKE USE 51446 |
| 32 | 51446 | 1 | VENT TUBE, INTAKE |
| 33 | 280582 | 1 | RAIN SHIELD |
| 34 | 390852 | 1 | COMBUSTION AIR HOUSING (FRONT) |
| 35 | 121929 | 4 | SCREW, #8 - 18 X 2 1/4 |
| 36 | 121928 | 8 | 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 | 121971 | 2 | SCREW # 4-24 X 5/8 |
| 42 | 391039 | 1 | BLOWER ASSY, ROOM AIR, FRONT |
| 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 |
| 64 | 63610 | 1 | STOP, MODULE BOARD |
| 68 | 63616 | 1 | BRACKET HOUSING, ROOM & COMB AIR |
| NS | 6258ACW | 1 | FURNACE, ACCESS DOOR SF- COLONIAL WHITE |
| NS | 6258APW | 1 | FURNACE, ACCESS DOOR SF- POLAR WHITE |
| 69 | 2607A | 1 | FURNACE CORE REPLACEMENT RP-30Q |
Replacement parts shown in the diagrams
The products pictured below have manufacturer numbers linked in the reference tables above. Confirm the furnace model, serial number and production revision before ordering. See individual listings for current availability.
Diagram ref 2 · MPN 161154
Suburban 161154 White Heat-Only Mechanical RV Furnace Thermostat
View product and availability
Diagram ref 11 · MPN 180306
Suburban 180306 No. 53 Metric SF25 Furnace Burner Orifice
View product and availability
Diagram ref 12 · MPN 525031
Suburban 525031 Furnace Burner Access Gasket | SF/SH
View product and availability
Diagram ref 38 · MPN 350184
Suburban 350184 Combustion-Air Wheel for SF-25/30/35
View product and availability
Diagram ref 40 · MPN 233004
Suburban 233004 RV Furnace Motor for SF-Q, SF-FQ & SFV-Q Series
View product and availability
Diagram ref 48 · MPN 232351
Suburban 232351 Furnace On/Off Switch | Select SF, SH & NT
View product and availability
Diagram ref 52 · MPN 350206
Suburban 350206 Furnace Blower Wheel, Replacement for SF Series Part #
View product and availability
Diagram ref NS · MPN 6258ACW
Suburban 6258ACW SF Furnace Access Door
View product and availability
Diagram ref NS · MPN 6258APW
Suburban 6258APW SF Furnace Access Door
View product and availability