Use the SF-20F model drawings to identify parts in the external cabinet, the burner and manifold, and the air-moving and ignition systems. This is the non-FQ variant; use its own reference numbers rather than assuming a later FQ diagram applies.
Use the diagram callouts to find the manufacturer part number, then select a linked number for product details. Check the furnace model and serial-number range before ordering.
See parts referenced in this guide
These photos are from the linked NewRVParts listings. Compare the part number and installed component before ordering.
1. Cabinet and duct connections
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 1 | 101242 | 1 | CABINET, FRONT, 3 - HOLE |
| 2 | 161154 | 1 | THERMOSTAT, WALL (WHITE) |
| 5 | 101889 | 1 | CABINET ASM |
| 6 | 50733 | 1 | COVER, DUCT |
| 7 | 50715 | 1 | DUCT COLLAR, 4 IN. |
2. Burner, gas valve and ignition electrode
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 8 | 122694 | 1 | NUT |
| 9 | 171596 | 1 | MANIFOLD ASSY |
| 10 | 120158 | 1 | SCREW, #8 X 3/8 |
| 11 | 180188 | 1 | MAIN BRN ORFICE #55 |
| 11 | 180305 | 1 | ORIFICE #55 METRIC THREADS - Above Serial# 021206467 |
| 12 | 70811 | 1 | GASKET, BURNER ACCESS |
| 12 | 525010 | 1 | SERVICE. KIT, GASKET, BURNER, ACCESS COVER |
| 12 | 71263 | 1 | GASKET, BURNER ACCESS COVER - Above Serial# 094101431 |
| 12 | 525031 | 1 | SERVICE KIT, GASKET BURNER ACCESS COVER - Above Serial# 094101431 |
| 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) |
| 17 | 121651 | 1 | SCREW 8-18 X 1/2 |
| 18 | 121651 | 1 | SCREW 8-18 X 1/2 |
| 19 | 62935 | 1 | PLATE, SECONDARY AIR, BOTTOM |
| 20 | 121651 | 1 | SCREW 8-18 X 1/2 |
| 21 | 121651 | 1 | SCREW 8-18 X 1/2 |
| 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 | 233306 | 1 | ELECTRODE & WIRE ASSY (STRAIGHT) - Above Serial No 171416095 |
| 22 | 525051 | 1 | SERVICE KIT ELECTRODE, STRAIGHT - Above Serial No 171416095 |
| 23 | 10767 | 1 | BURNER ASSEMBLY |
| 24 | 70963 | 1 | GROMMET |
| 25 | 121651 | 1 | SCREW 8-18 X 1/2 |
| 26 | 161122 | 1 | GAS VALVE, 3/8 INLET NPT X 3/8 INVERTED OUTLET - Above Serial# 971303163 |
| 26 | 161133 | 1 | GAS VALVE, 3/8 INLET NPT X 3/8 INVERTED OUTLET - Below Serial# 921403846 |
| 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 | 121857 | 1 | SCREW #8-18 X 1/2 |
| 29 | 170374 | 1 | GAS FITTING, 90° ELBOW |
| 29 | 525025 | 1 | SERVICE KIT, FITTING BRASS 3/8 90 DEG ELBOW |
3. Vent, blower motor and control components
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 30 | 121853 | 1 | SCREW, #10 X 3/4 |
| 31 | 260231 | 1 | VENT CAP & EXHAUST TUBE ASSY |
| 32 | 51248 | 1 | VENT TUBE, INTAKE USE 51446 |
| 32 | 51446 | 1 | VENT TUBE, INTAKE |
| 33 | 121857 | 1 | SCREW #8-18 X 1/2 |
| 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 | 390849 | 1 | COMBUSTION AIR HOUSING (REAR) |
| 38 | 350189 | 1 | WHEEL, COMBUSTION AIR USE 350211 |
| 38 | 350211 | 1 | COMBUSTION AIR WHEEL |
| 39 | 71084 | 1 | GASKET, FIREWALL COMBUSTION AIR |
| 40 | 231706 | 1 | MOTOR ASSM 2 1/2 IN DIAMETER USE 233101 - BELOW SERIAL NUMBER: 012205202 |
| 40 | 233101 | 1 | MOTOR ASSY, 2 1/2 IN DIAM - BELOW SERIAL NUMBER: 012205202 |
| 40 | 232682 | 1 | MOTOR ASSY, 3 IN DIAM W/GASKET - ABOVE SERIAL NUMBER: 012205202 |
| 41 | 121945 | 1 | SCREW # 4-20 X 5/8 |
| 42 | 390872 | 1 | HOUSING, BLOWER FRONT HALF |
| 43 | 121857 | 1 | SCREW #8-18 X 1/2 |
| 44 | 390851 | 1 | HOUSING, BLOWER REAR HALF |
| 45 | 230509 | 1 | MICRO SWITCH & PADDLE USE 233356 - Below Serial# 924201894 |
| 45 | 233356 | 1 | MICRO SWITCH & PADDLE - Below Serial# 924201894 |
| 45 | 525024 | 1 | SERVICE KIT, SAIL SWITCH - Below Serial# 924201894 |
| 45 | 232261 | 1 | SWITCH, SAIL USE 233382 |
| 45 | 233382 | 1 | SAIL SWITCH |
| 45 | 525003 | 1 | SERVICE KIT, SAIL SWITCH |
| 46 | 121928 | 1 | SCREW 6-19 X 1/2 PH PH |
| 47 | 121928 | 1 | SCREW 6-19 X 1/2 PH PH |
| 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 | 350123 | 1 | BLOWER ROOM AIR WHEELUSE 350129 |
| 52 | 350129 | 1 | BLOWER WHEEL |
| 53 | 121857 | 1 | SCREW #8-18 X 1/2 |
| 54 | 231809 | 1 | BUSHING, STRAIN RELIEF |
| 55 | 121857 | 1 | SCREW #8-18 X 1/2 |
| 56 | 231809 | 1 | BUSHING, STRAIN RELIEF |
| 57 | 70808 | 1 | GASKET, FIREWALL CHAMBER |
| 58 | 21149BK | 1 | CHAMBER ASSY FINAL |
| 59 | 232503 | 1 | SWITCH, LIMIT |
| 60 | 120158 | 1 | SCREW, #8 X 3/8 |
| 61 | 120158 | 1 | SCREW, #8 X 3/8 |
| 62 | 110747 | 1 | SUBURBAN FIREWALL |
| NS | 2606A | 1 | FURNACE CORE REPLACEMENT RP-20FQ |