The SF-42F parts views are separated into cabinet and ductwork, gas train, and blower-vent assemblies. Each callout is accompanied by the manufacturer service reference so you can distinguish individual components from complete assemblies.
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.
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 | 101894 | 1 | CABINET ASSY |
| 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 |
|---|---|---|---|
| 9 | 171596 | 1 | MANIFOLD ASSY |
| 11 | 180216 | 1 | ORIFICE #49 (LP GAS ONLY) |
| 11 | 180309 | 1 | ORIFICE #50 METRIC THREADS - Above Serial# 021206467 |
| 12 | 70811 | 1 | GASKET, BURNER ACCESS |
| 12 | 525010 View photo | 1 | SERVICE. KIT, GASKET, BURNER, ACCESS COVER |
| 12 | 71263 | 1 | GASKET, BURNER ACCESS COVER - Above Serial# 094101431 |
| 12 | 525031 View photo | 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) |
| 19 | 62935 | 1 | PLATE, SECONDARY AIR, BOTTOM |
| 20 | 232286 | 1 | ELECTRODE, SINGLE PROBE W/ WIRE (L SHAPE) - Above Serial No 934701426 Ending Serial No 210651046 |
| 20 | 525009 | 1 | SERVICE KIT, ELECTRODE W/GROMMET (L SHAPE) - Above Serial No 934701426 Ending Serial No 210651046 |
| 20 | 233306 | 1 | ELECTRODE & WIRE ASSY (STRAIGHT) - Above Serial No 210651046 |
| 20 | 525051 | 1 | SERVICE KIT ELECTRODE, STRAIGHT - Above Serial No 210651046 |
| 23 | 10799 | 1 | BURNER ASSY, MAIN |
| 24 | 70963 | 1 | GROMMET |
| 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 | 171576 | 1 | PIPE ASSY, GAS INLET |
| 28 | 62180 | 1 | CLAMP, WIRE |
3. Vent, blower motor and control components
| Reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 31 | 260231 View photo | 1 | VENT CAP & EXHAUST TUBE ASSY |
| 31A | 280552 | 1 | RAIN SHIELD |
| 32 | 51249 | 1 | VENT TUBE ASSEMBLY INTAKE |
| 34 | 390852 | 1 | COMBUSTION AIR HOUSING (FRONT) |
| 35 | 121929 | 5 | SCREW, #8 - 18 X 2 1/4 |
| 36 | 121928 | 7 | SCREW 6-19 X 1/2 PH PH |
| 37 | 390848 | 1 | COMBUSTION AIR HOUSING (REAR) |
| 38 | 350183 | 1 | WHEEL, COMBUSTION AIR |
| 39 | 71084 | 1 | GASKET, FIREWALL COMBUSTION AIR |
| 40 | 232212 | 1 | MOTOR SF 42/42F 2 1/2 IN DIAM USE 233103 - BELOW SERIAL NUMBER: 012305199 |
| 40 | 233103 | 1 | MOTOR, 2 1/2 IN DIAM - BELOW SERIAL NUMBER: 012305199 |
| 40 | 232683 | 1 | MOTOR ASSY, 3 IN DIIAM W/GASKET - ABOVE SERIAL NUMBER 012305199 |
| 41 | 121945 | 2 | SCREW # 4-20 X 5/8 |
| 42 | 390873 | 1 | HOUSING, BLOWER FRONT HALF |
| 43 | 121857 | 4 | 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 |
| 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 |
| 52 | 350129 | 1 | BLOWER WHEEL |
| 54 | 70362 | 1 | BUSHING, SNAP |
| 55 | 70973 | 1 | INSULATOR CAP, MODULE BOARD COIL |
| 56 | 71206 | 1 | BUSHING, STRAIN RELIEF |
| 57 | 70808 | 1 | GASKET, FIREWALL CHAMBER |
| 58 | 21150BK | 1 | CHAMBER ASSY FINAL |
| 59 | 232505 | 1 | LIMIT SWITCH 195 DEGREE |
| 59 | 525035 | 1 | SERVICE KIT, LIMIT SWITCH 195 OPEN/155 CLOSED |
| 59 | 525035 | 1 | SERVICE KIT, LIMIT SWITCH 195 OPEN/155 CLOSED |
| 62 | 110767 | 1 | FIREWALL |
| NS | 2610A | 1 | FURNACE CORE REPLACEMENT RP-35FQ |
Replacement parts for this furnace
Shop components listed for the Suburban SF-42F. 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
Replacement furnace core
More SF-42F parts with product photos
Compare these manufacturer-numbered components with the parts tables above. Check the furnace data plate and any serial-number limits before ordering.
