Suburban NT20S Furnace Parts Diagram & OEM Parts List
Use this Suburban NT20S 19K ducted furnace parts breakdown to identify replacement ignition modules, electrodes, motors, sail switches, limit switches, gas valves, blower wheels, gaskets, vent parts and other OEM RV furnace service parts.
Looking for replacement furnace parts? Shop our RV Furnace Parts Collection for ignition boards, motors, sail switches, limit switches, gas valves, thermostats, blower wheels and more.
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Suburban NT20S Cabinet, Intake & Vent Parts
| Reference # | Mfg Part Number | Qty | Description |
|---|---|---|---|
| 1 | 161154 | 1 | THERMOSTAT, WALL (WHITE) |
| 1 | 161210 | 1 | THERMOSTAT, WALL (BLACK) |
| 2 | 121224 | 2 | SCREW, #10 X 3/4 |
| 3 | 120158 | 2 | SCREW, #8 X 3/8 |
| 4 | 100960 | 1 | FRONT, CABINET USE 101884 |
| 4 | 101884 | 1 | FRONT, CABINET |
| 5 | 100959 | 1 | WRAP, CABINET USE 101885 |
| 5 | 101885 | 1 | CABINET |
| 6 | 50715 | 2 | DUCT COLLAR, 4 IN. |
| 7 | 70569 | 1 | BUSHING SNAP |
| 8 | 50906 | 1 | SUBURBAN INTAKE TUBE 3 IN |
| 8 | 50712 | 1 | TUBE, INTAKE 5IN LONG (STANDARD) |
| 8 | 50708 | 1 | TUBE, INTAKE 7-1/4IN LONG |
| 9 | 260098 | 1 | CAP & EXHAUST TUBE ASSM USE 260572 |
| 9 | 260572 | 1 | VENT CAP & EXHAUST TUBE ASSEMBLY |
| 10 | 121853 | 6 | SCREW, #10 X 3/4 |
Suburban NT20S Switch, Motor & Combustion Air Parts
| Reference # | Mfg Part Number | Qty | Description |
|---|---|---|---|
| 11 | 62476 | 1 | BRACKET, MICRO SW MOUNTING |
| 11A | 121247 | 2 | SCREW, 2-56 X 5/8 HEX |
| 12 | 230933 | 1 | MICRO SWITCH USE 233100 |
| 12 | 233100 | 1 | MICRO SWITCH ASM USE 525028 |
| 12 | 233352 | 1 | MICRO SWITCH |
| 12 | 525028 | 1 | SERVICE KIT, SAIL SWITCH |
| 13 | 121951 | 2 | NUT #2-56 |
| 14 | 20890BK | 1 | COMBUSTION CHAMBER |
| 15 | 121388 | 1 | SCREW, #10 X 1/2 |
| 16 | 70362 | 1 | BUSHING, SNAP |
| 17 | 121927 | 1 | SCREW 8 X 1/4 PH.P.H. (NO SUBSTITUTE) |
| 18 | 230621 | 1 | LIMIT SWITCH 180 DEGREE - Below Serial# 093800203 |
| 18 | 233022 | 1 | LIMIT SWITCH 170 DEGREE - Above Serial# 093800203 |
| 19 | 120158 | 2 | SCREW, #8 X 3/8 |
| 20 | 121244 | 2 | SCREW, #6 X 1/4IN |
| 21 | 230714 | 1 | SPLICER |
| 22 | 120158 | 1 | SCREW, #8 X 3/8 |
| 22A | 120158 | 2 | SCREW, #8 X 3/8 |
| 23 | 70270 | 1 | BUSHING, SNAP 1/2 IN. |
| 24 | 121388 | 1 | SCREW, #10 X 1/2 |
| 26 | 231741 | 1 | MODULE BOARD, WAS SUPERCEEDED BY 520741. USE 521099 |
| 26 | 520741 | 1 | MODULE BOARD, WAS SUPERCEEDED BY 520820. USE 521099 |
| 26 | 520820 | 1 | MODULE BOARD, WAS SUPERCEEDED USE 521099 |
| 26 | 521099 | 1 | IGNITION CONTROL MODULE |
| 27 | 121271 | 2 | NUT, #6 32 HEX |
| 29 | 62392 | 1 | BRACKET, COMBUSTION AIR HOUSING MOUNTING |
| 31 | 70450 | 1 | GASKET, BURNER TUNNEL |
| 32 | 120717 | 2 | NUT, HEX # 10-24 KEPS |
| 33 | 120158 | 2 | SCREW, #8 X 3/8 |
| 34 | 71161 | 1 | GASKET, COMBUSTION AIR BOX USE 70446 |
| 34 | 70446 | 1 | GASKET COMBUSTION AIR BOX |
| 35 | 120158 | 2 | SCREW, #8 X 3/8 |
| 36 | 390876 | 1 | HOUSING, COMBUSTION AIR (REAR) |
| 37 | 120158 | 9 | SCREW, #8 X 3/8 |
| 38 | 350082 | 1 | WHEEL, COMBUSTION AIR |
| 39 | 121329 | 2 | NUT, 10-32 HEX LOCK |
| 40 | 120722 | 2 | WASHER - FLAT |
| 41 | 390874 | 1 | HOUSING, COMBUSTION AIR (FRONT) |
| 42 | 121928 | 8 | SCREW 6-19 X 1/2 PH PH |
| 43 | 71085 | 1 | MOTOR GASKET |
| 44 | 230634 | 1 | MOTOR USE 232878 |
| 44 | 232878 | 1 | MOTOR USE 520950 |
| 44 | 520950 | 1 | MOTOR KIT W/ GASKETS - NLA |
| 45 | 350083 | 1 | IMPELLER ROOM AIR |
| 46 | 63447 | 1 | BRACKET, COMBUSTION AIR HOUSING MOUNTING |
| NS | 2611A | 1 | FURNACE CORE REPLACEMENT RP-16NQ |
Suburban NT20S Burner, Gas Valve & Manifold Parts
| Reference # | Mfg Part Number | Qty | Description |
|---|---|---|---|
| 48 | 121407 | 2 | SCREW 8-32 X 3/8 HEX BK |
| 49 | 231931 | 1 | ELECTRODE (SINGLE PROBE) |
| 49 | 525033 | 1 | SERVICE KIT, ELECTRODE |
| 50 | 70163 | 1 | GASKET, ELECTRODE USE 071076 |
| 50 | 71076 | 1 | BURNER/ELECTRODE GASKET SET USE 72103 |
| 50 | 72103 | 1 | GASKET KIT, BURNER /ELECTRODE |
| 50 | 525011 | 1 | SERVICE KIT, GASKETS BURNER / ELECTRODE |
| 51 | 121388 | 4 | SCREW, #10 X 1/2 |
| 52 | 120717 | 2 | NUT, HEX # 10-24 KEPS |
| 53 | 120158 | 1 | SCREW, #8 X 3/8 |
| 54 | 30621 | 1 | BURNER ACCESS DOOR |
| 55 | 70398 | 1 | GASKET, BURNER ACCESS DOOR USE 071076 |
| 55 | 71076 | 1 | BURNER/ELECTRODE GASKET SET USE 72103 |
| 55 | 72103 | 1 | GASKET KIT, BURNER /ELECTRODE |
| 55 | 525011 | 1 | SERVICE KIT, GASKETS BURNER / ELECTRODE |
| 56 | 63262 | 1 | BRACKET, SWITCH MOUNTING |
| 57 | 232351 | 1 | ON/OFF SWITCH |
| 58 | 171428 | 1 | ELBOW 90 |
| 59 | 170374 | 1 | GAS FITTING, 90° ELBOW |
| 59 | 525025 | 1 | SERVICE KIT, FITTING BRASS 3/8 90 DEG ELBOW |
| 60 | 121388 | 1 | SCREW, #10 X 1/2 |
| 61 | 71034 | 1 | GASKET, GAS INLET |
| 62 | 62143 | 1 | PLATE COVER, GAS INLET |
| 63 | 170758 | 1 | PIPE, GAS INLET |
| 64 | 161123 | 1 | GAS VALVE 3/8 X 1/8 |
| 67 | 170746 | 1 | MANIFOLD ASSY |
| 68 | 120615 | 4 | SCREW 8 X 1/2 PH PH |
| 69 | 180231 | 1 | ORIFICE, MAIN BURNER |
| 70 | 70449 | 1 | GASKET, MANIFOLD PIPE |
| 71 | 10614 | 1 | BURNER ASSEMBLY USE 10978 |
| 71 | 10978 | 1 | BURNER ASM. W/ACCESS DOOR |
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