Use the Suburban SW12DE exploded views to locate parts for the 12-gallon direct-spark gas and electric RV water heater. The main assembly and access-door components are shown separately to make reference-number identification easier.
Choose the numbered part on the diagram and match its reference to the adjacent table. Select a linked manufacturer number for product details and availability. Match the water-heater model and serial-number range before ordering.
1. Main 12-gallon heater assembly
| Ref. | Manufacturer number | Qty. | Part description |
|---|---|---|---|
| 1 | 520960 | 1 | FOAM JACKET ASSEMBLY COMPLETE |
| 2 | 232589 | 1 | SWITCH & LITE W/PLATE (WHITE) USE 234589 |
| 2 | 234589 | 1 | REMOTE ON/OFF SWITCH-WHITE |
| 2 | 232795 | 1 | SWITCH & LITE W/PLATE (CREAM) USE 234795 |
| 2 | 234795 | 1 | REMOTE ON/OFF SWITCH-CREAM |
| 2 | 232229 | 1 | SWITCH & LITE W/PLATE (BLACK) USE 234229 |
| 2 | 234229 | 1 | REMOTE ON/OFF SWITCH-BLACK |
| 3 | 520814 | 1 | MODULE BOARD |
| 5 | 90487 | 1 | MODULE BOARD COVER |
| 6 | 70270 | 1 | BUSHING, SNAP 1/2 IN. |
| 7 | 230216 | 1 | BUSHING, STRAIN RELIEF 5/8 |
| 8 | 121576 | 1 | NUT, 10-24 KEPS |
| 9 | 230218 | 1 | BUSHING SNAP 7/8 IN |
| 11 | 90576 | 1 | COVER, JUNCTION BOX |
| 12 | 90517 | 1 | BOX ASSY, JUNCTION DC |
| 15 | 101777 | 1 | BACK, FLUE COLLECTOR |
| 17 | 121577 | 1 | SCREW 10 X 1/4 IN |
| 18 | 161157 | 1 | VALVE, PRESSURE RELIEF 3/4 IN USE 161230 |
| 18 | 161230 | 1 | VALVE, PRESSURE RELIEF 3/4 IN NPT |
| 20 | 70987 | 1 | GASKET, T-STAT COVER |
| 21 | 90467 | 1 | COVER,T-STAT USE 90562 |
| 21 | 90562 | 1 | COVER, T-STAT / HI LIMIT |
| 21 | 525022 | 1 | SERVICE KIT, THERMOSTAT COVER |
| 23 | 63187 | 1 | ELECTRODE MOUNTING BRACKET |
| 24 | 70874 | 1 | GROMMET |
| 24 | 525027 | 1 | SERVICE KIT, GROMMET, THEROMSTAT COVER |
| 25 | 232258 | 1 | 2 PRONG ELECTRODE ASSY |
| 25 | 525005 | 1 | SERVICE KIT, ELECTRODE |
| 27 | 10843 | 1 | BURNER W/ORIFICE |
| 27 | 525023 | 1 | SERVICE KIT, BURNER W/ORIFICE |
| NS | 11030 | 1 | BURNER - (SERIAL# ABOVE 164513462) |
| NS | 180323 | 1 | BURNER ORIFICE #61 - USED W/ VALVE #161255 |
| NS | 63827 | 1 | ORIFICE CLIP - USED W/ VALVE #161255 |
| 29 | 171475 | 1 | LOXIT NUT USE 171463 |
| 29 | 171463 | 1 | NUT LOXIT 1/4 IN |
| 29 | 525030 | 1 | SERVICE KIT, LOXIT NUT 1/4 |
| 31 | 90445 | 1 | COVER ELEMENT |
| 32 | 70988 | 1 | GASKET ELEMENT COVER |
| 33 | 70270 | 1 | BUSHING, SNAP 1/2 IN. |
| 34 | 232767 | 1 | ANODE ROD, MAGNESIUM USE 233514 |
| 34 | 233514 | 1 | ANODE ROD-MAGNESIUM-EXT. LIFE |
| 34 | 232768 | 1 | ANODE ROD-ALUMINUM (OPTIONAL) USE 233516 |
| 34 | 233516 | 1 | ANODE ROD |
| 35 | 70989 | 1 | GROMMET, GAS INLET |
| 36 | 90450 | 1 | AC JUNCTION BOX ASSEMBLY |
| 37 | 232306 | 1 | T-STAT/ HI-LIMIT SWITCH, 120 VAC 130 DGR |
| 38 | 232282 | 1 | T-STAT / HI-LIMIT SWITCH , 12 VDC 130 DGR USE 233534 |
| 38 | 233534 | 1 | T-STAT / HI-LIMIT SWITCH, 135 DEGREE |
| 38 | 232319 | 1 | T-STAT/HI-LIMIT 12VDC 140 DEGREE |
| 40 | 71246 | 1 | GROMMET |
| 42 | 232362 | 1 | SWITCH, ELEMENT USE 232259 |
| 42 | 232259 | 1 | SWITCH, ELEMENT USE 233358 |
| 42 | 233358 | 1 | SWITCH, ELEMENT |
| 42 | 525001 | 1 | SERVICE KIT, ELEMENT SWITCH W/GASKET |
| 44 | 170374 | 1 | GAS FITTING, 90° ELBOW |
| 44 | 525025 | 1 | SERVICE KIT, FITTING BRASS 3/8 90 DEG ELBOW |
| 45 | 520789 | 1 | ELECTRIC ELEMENT, USE 520900 |
| 45 | 520900 | 1 | ELEMENT W/GASKET |
| 46 | 161109 | 1 | GAS VALVE 3/8 NTP X 1/4 LOXIT |
| 46 | 161255 | 1 | GAS VALVE 3/8 NPT INLET 1/8-27 NPT OUTLET - (Serial# Above 164513462) |
| NS | 521072 | 1 | SOLENOID KIT FOR WHITE RODGERS VALVES |
| NS | 521073 | 1 | SOLENOID KIT FOR SEVEN UNIVERSE VALVES |
| 47 | 171420 | 1 | MANIFOLD, OUTLET |
| 48 | 63243 | 1 | BRACKET, VALVE MOUNTING |
| 48 | 63245 | 1 | BRACKET,VALVE |
| NS | 63779 | 1 | VALVE MOUNTING BRACKET - USED W/ VALVE #161255 |
| 49 | 121855 | 1 | SCREW 8-32X3/8 HEX THDCUT |
| 51 | 63444 | 1 | BURNER BRACKET |
| 52 | 121943 | 1 | SCREW, 8MM-4.0X1/2 HEX WASHER HEAD |
| 53 | 171463 | 1 | NUT LOXIT 1/4 IN |
| 53 | 525030 | 1 | SERVICE KIT, LOXIT NUT 1/4 |
| 55 | 121577 | 2 | SCREW 10 X 1/4 IN |
| NS | 232317 | 1 | T-STAT SWITCH, 120VAC 140 DGREE - OPTIONAL |
| NS | 232459 | 1 | ELECTRODE WIRE ASSY USE 232456 |
| NS | 232456 | 1 | WIRE, ELECTRODE |
2. Outer access door and mounting choices
Shop replacement parts for SW12DE
Browse the pictured components below, then open a product for details and availability. Check the heater model, serial number and original part before ordering.
Tank, electrical and control parts
Ignition and gas components
Exterior access doors
Manufacturer documentation: Suburban Water Heater Service & Training Manual, shared SW10/SW12 illustrated parts view (p.36).