Motorhome (Class A RV)
ProductOverview
A Class A motorhome is a self-contained home on wheels built on a heavy purpose-made chassis rather than an adapted truck. The flat-fronted coach body sits over the full width of the frame, giving an interior tall and wide enough to walk through, with slide-out rooms that telescope outward when parked to widen the living space. Unlike a towable trailer, it carries its own engine, drivetrain, and driver station up front, and unlike a camper van it brings full house systems: water, propane, climate control, and independent electrical generation. The diesel-pusher layout places the engine at the rear, which keeps the cabin quiet and frees the front for a large windshield and a lounge.
How it works
The coach drives on a Motorhome Chassis of deep steel rails carrying full water and fuel loads. The rear-mounted Diesel Engine, a turbocharged inline-six, sends torque forward through the Transmission to the Drive Axle and its dual rear wheels. The Air Suspension uses air-bag springs and ride-height valves to hold the coach level whether it is empty or fully loaded, and the Air Brakes clamp disc brakes at every wheel from compressed air.
Parked, the rig becomes a residence. The Coach Body opens its slide-outs to reveal the Interior, with captain's chairs, a convertible dinette, a bed, a galley, and a wet bath. The Water System feeds fresh water from an onboard tank through an electric pump and a water heater, and collects waste in grey and black holding tanks. The Propane System supplies the cooktop, fridge, and furnace, while the HVAC heats with a forced-air furnace and cools with roof-top air conditioners. Off-grid power comes from the Power System: a house battery bank, an inverter/charger, and a genset. Hydraulic Leveling System jacks level and steady the coach on uneven ground.
Motorhome (Class A RV) parts and their functions
15 top-level parts · 391 parts in total · full bill of materials below| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Motorhome Chassis 4 parts | 1× | Heavy motorhome chassis |
| 2 | Diesel Engine 9 parts | 1× | Rear-mounted diesel |
| 3 | Transmission 6 parts | 1× | Automatic |
| 4 | Drive Axle 6 parts | 1× | Rear drive axle |
| 5 | Air Suspension 4 parts | 1× | Air-bag suspension with leaf-spring location, giving a level ride under varying loads. |
| 6 | Air Brakes 5 parts | 1× | Full air brakes |
| 7 | Wheel Assembly 5 parts | 6× | 2 front + 4 rear duals |
| 8 | Coach Body 7 parts | 1× | Slab-sided coach with slide-outs |
| 9 | Interior 5 parts | 1× | Living quarters |
| 10 | Water System 5 parts | 1× | Fresh/grey/black water |
| 11 | Propane System 3 parts | 1× | LP tank, regulator, and distribution lines feeding the cooktop, furnace, fridge, and water heater. |
| 12 | HVAC 4 parts | 1× | Furnace + roof AC |
| 13 | Power System 4 parts | 1× | Inverter, batteries, generator |
| 14 | Driver Dash 3 parts | 1× | Driver dash |
| 15 | Leveling System 3 parts | 1× | Hydraulic levelers |
3D model
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Build & assembly graph
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Bill of materials for Motorhome (Class A RV)
15 top-level lines · 130 rows shown · 391 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Motorhome Chassis 4 parts | motorhome-rv-chassis | 1× | 1 | 12 | assembly |
| 1.1 | Frame Rail | motorhome-rv-frame-rail | 2× | 2 | · | part |
| 1.2 | Crossmember | motorhome-rv-crossmember | 8× | 8 | · | part |
| 1.3 | Diesel Fuel Tank | motorhome-rv-fuel-tank | 1× | 1 | · | part |
| 1.4 | Fastener Set | fastener-set | 1× | 1 | · | part |
| 2 | Diesel Engine 9 parts | motorhome-rv-diesel-engine | 1× | 1 | 25 | assembly |
| 2.1 | Engine Block & Head | motorhome-rv-engine-block | 1× | 1 | · | part |
| 2.2 | Piston & Rod | motorhome-rv-piston | 6× | 6 | · | part |
| 2.3 | Crankshaft | motorhome-rv-crankshaft | 1× | 1 | · | part |
| 2.4 | Turbocharger | motorhome-rv-turbocharger | 1× | 1 | · | part |
| 2.5 | Common-Rail Injection 3 parts | motorhome-rv-fuel-injection | 1× | 1 | 8 | assembly |
| 2.5.1 | Fuel Injector | motorhome-rv-injector | 6× | 6 | · | part |
| 2.5.2 | High-Pressure Fuel Pump | motorhome-rv-hp-fuel-pump | 1× | 1 | · | part |
| 2.5.3 | Common Fuel Rail | motorhome-rv-fuel-rail | 1× | 1 | · | part |
| 2.6 | Radiator | radiator | 1× | 1 | · | part |
| 2.7 | Coolant Pump | coolant-pump | 1× | 1 | · | part |
| 2.8 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 2.9 | Oil Seal | oil-seal | 4× | 4 | · | part |
| 3 | Transmission 6 parts | motorhome-rv-transmission | 1× | 1 | 18 | assembly |
| 3.1 | Helical Gear Pair | gear-pair | 6× | 6 | · | part |
| 3.2 | Gearbox Housing | gearbox-housing | 1× | 1 | · | part |
| 3.3 | Ball Bearing | ball-bearing | 6× | 6 | · | part |
| 3.4 | Oil Seal | oil-seal | 3× | 3 | · | part |
| 3.5 | Torque Converter | motorhome-rv-torque-converter | 1× | 1 | · | part |
| 3.6 | Gear Oil | gear-oil | 1× | 1 | · | part |
| 4 | Drive Axle 6 parts | motorhome-rv-drive-axle | 1× | 1 | 18 | assembly |
| 4.1 | Open Differential 4 parts | differential | 1× | 1 | 6 | assembly |
| 4.1.1 | Differential Case | diff-case | 1× | 1 | · | part |
| 4.1.2 | Side Gear | side-gear | 2× | 2 | · | part |
| 4.1.3 | Pinion Gear | pinion-gear | 2× | 2 | · | part |
| 4.1.4 | Cross Pin | cross-pin | 1× | 1 | · | part |
| 4.2 | Axle Housing | motorhome-rv-axle-housing | 1× | 1 | · | part |
| 4.3 | Axle Shaft | motorhome-rv-axle-shaft | 2× | 2 | · | part |
| 4.4 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 4.5 | Oil Seal | oil-seal | 4× | 4 | · | part |
| 4.6 | Gear Oil | gear-oil | 1× | 1 | · | part |
| 5 | Air Suspension 4 parts | motorhome-rv-air-suspension | 1× | 1 | 12 | assembly |
| 5.1 | Air Spring Bag | motorhome-rv-air-bag | 4× | 4 | · | part |
| 5.2 | Leaf Spring | leaf-spring | 2× | 2 | · | part |
| 5.3 | Shock Absorber | motorhome-rv-shock-absorber | 4× | 4 | · | part |
| 5.4 | Ride-Height Valve | motorhome-rv-leveling-valve | 2× | 2 | · | part |
| 6 | Air Brakes 5 parts | motorhome-rv-air-brakes | 1× | 1 | 16 | assembly |
| 6.1 | Brake Disc (rotor) | brake-disc | 6× | 6 | · | part |
| 6.2 | Brake Chamber | motorhome-rv-brake-chamber | 6× | 6 | · | part |
| 6.3 | Air Compressor | motorhome-rv-air-compressor | 1× | 1 | · | part |
| 6.4 | Air Reservoir Tank | motorhome-rv-air-tank | 2× | 2 | · | part |
| 6.5 | Treadle Brake Valve | motorhome-rv-brake-valve | 1× | 1 | · | part |
| 7 | Wheel Assembly 5 parts | wheel-assembly | 6× | 6 | 9 | assembly |
| 7.1 | Alloy Wheel | alloy-wheel | 1× | 6 | · | part |
| 7.2 | Tire | tire | 1× | 6 | · | part |
| 7.3 | TPMS Sensor | tpms-sensor | 1× | 6 | · | part |
| 7.4 | Lug Nut | lug-nut | 5× | 30 | · | part |
| 7.5 | Valve Stem | valve-stem | 1× | 6 | · | part |
| 8 | Coach Body 7 parts | motorhome-rv-coach-body | 1× | 1 | 64 | assembly |
| 8.1 | Body Cage | motorhome-rv-body-cage | 1× | 1 | · | part |
| 8.2 | Sidewall Panel | motorhome-rv-sidewall | 2× | 2 | · | part |
| 8.3 | Roof Panel | motorhome-rv-roof-panel | 1× | 1 | · | part |
| 8.4 | Slide-Out Room 5 parts | motorhome-rv-slide-out | 2× | 2 | 25 | assembly |
| 8.4.1 | Slide Box | motorhome-rv-slide-box | 1× | 2 | · | part |
| 8.4.2 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 2 | 3 | assembly |
| 8.4.3 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 2 | 19 | assembly |
| 8.4.4 | Helical Gear Pair | gear-pair | 1× | 2 | · | part |
| 8.4.5 | Slide Seal | motorhome-rv-slide-seal | 1× | 2 | · | part |
| 8.5 | Entry Door | motorhome-rv-entry-door | 1× | 1 | · | part |
| 8.6 | Coach Window | motorhome-rv-window | 8× | 8 | · | part |
| 8.7 | Fastener Set | fastener-set | 1× | 1 | · | part |
| 9 | Interior 5 parts | motorhome-rv-interior | 1× | 1 | 23 | assembly |
| 9.1 | Seat Assembly 5 parts | seat-assembly | 2× | 2 | 7 | assembly |
| 9.1.1 | Seat Frame | seat-frame | 1× | 2 | · | part |
| 9.1.2 | Seat Foam | seat-foam | 2× | 4 | · | part |
| 9.1.3 | Seat Cover | seat-cover | 1× | 2 | · | part |
| 9.1.4 | Seat Motor | seat-motor | 2× | 4 | · | part |
| 9.1.5 | Seat Heater Mat | seat-heater | 1× | 2 | · | part |
| 9.2 | Dinette | motorhome-rv-dinette | 1× | 1 | · | part |
| 9.3 | Bed | motorhome-rv-bed | 1× | 1 | · | part |
| 9.4 | Galley 4 parts | motorhome-rv-galley | 1× | 1 | 4 | assembly |
| 9.4.1 | Cabinetry | motorhome-rv-cabinetry | 1× | 1 | · | part |
| 9.4.2 | Propane Cooktop | motorhome-rv-cooktop | 1× | 1 | · | part |
| 9.4.3 | Refrigerator | motorhome-rv-refrigerator | 1× | 1 | · | part |
| 9.4.4 | Sink & Faucet | motorhome-rv-sink | 1× | 1 | · | part |
| 9.5 | Wet Bath 3 parts | motorhome-rv-bathroom | 1× | 1 | 3 | assembly |
| 9.5.1 | Shower Pan | motorhome-rv-shower-pan | 1× | 1 | · | part |
| 9.5.2 | RV Toilet | motorhome-rv-toilet | 1× | 1 | · | part |
| 9.5.3 | Vanity | motorhome-rv-vanity | 1× | 1 | · | part |
| 10 | Water System 5 parts | motorhome-rv-water-system | 1× | 1 | 27 | assembly |
| 10.1 | Fresh Water Tank | motorhome-rv-fresh-tank | 1× | 1 | · | part |
| 10.2 | Grey Water Tank | motorhome-rv-grey-tank | 1× | 1 | · | part |
| 10.3 | Black Water Tank | motorhome-rv-black-tank | 1× | 1 | · | part |
| 10.4 | Water Pump 3 parts | motorhome-rv-water-pump | 1× | 1 | 23 | assembly |
| 10.4.1 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 1 | 3 | assembly |
| 10.4.2 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 1 | 19 | assembly |
| 10.4.3 | Diaphragm Pump Head | motorhome-rv-pump-head | 1× | 1 | · | part |
| 10.5 | Water Heater | motorhome-rv-water-heater | 1× | 1 | · | part |
| 11 | Propane System 3 parts | motorhome-rv-propane-system | 1× | 1 | 3 | assembly |
| 11.1 | Propane Tank | motorhome-rv-propane-tank | 1× | 1 | · | part |
| 11.2 | LP Regulator | motorhome-rv-propane-regulator | 1× | 1 | · | part |
| 11.3 | Gas Distribution Lines | motorhome-rv-gas-line | 1× | 1 | · | part |
| 12 | HVAC 4 parts | motorhome-rv-hvac | 1× | 1 | 28 | assembly |
| 12.1 | Propane Furnace 4 parts | motorhome-rv-furnace | 1× | 1 | 24 | assembly |
| 12.1.1 | Furnace Burner | motorhome-rv-furnace-burner | 1× | 1 | · | part |
| 12.1.2 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 1 | 3 | assembly |
| 12.1.3 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 1 | 19 | assembly |
| 12.1.4 | Heat Exchanger | motorhome-rv-heat-exchanger | 1× | 1 | · | part |
| 12.2 | Heating Element | heating-element | 1× | 1 | · | part |
| 12.3 | Roof Air Conditioner | motorhome-rv-roof-ac | 2× | 2 | · | part |
| 12.4 | Thermostat | motorhome-rv-thermostat | 1× | 1 | · | part |
| 13 | Power System 4 parts | motorhome-rv-power-system | 1× | 1 | 57 | assembly |
| 13.1 | 12 V Battery | lv-battery | 4× | 4 | · | part |
| 13.2 | Inverter/Charger | motorhome-rv-inverter | 1× | 1 | · | part |
| 13.3 | Onboard Generator 4 parts | motorhome-rv-generator | 1× | 1 | 25 | assembly |
| 13.3.1 | Genset Engine | motorhome-rv-genset-engine | 1× | 1 | · | part |
| 13.3.2 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 1 | 3 | assembly |
| 13.3.3 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 1 | 19 | assembly |
| 13.3.4 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 13.4 | Power Center 4 parts | motorhome-rv-power-center | 1× | 1 | 27 | assembly |
| 13.4.1 | AC Breaker Panel | motorhome-rv-breaker-panel | 1× | 1 | · | part |
| 13.4.2 | DC Fuse Block | motorhome-rv-fuse-block | 1× | 1 | · | part |
| 13.4.3 | Wire Bundle | wire-bundle | 1× | 1 | · | part |
| 13.4.4 | Connector | connector | 24× | 24 | · | part |
| 14 | Driver Dash 3 parts | motorhome-rv-dash | 1× | 1 | 3 | assembly |
| 14.1 | LCD Panel | lcd-panel | 1× | 1 | · | part |
| 14.2 | Microcontroller | mcu | 1× | 1 | · | part |
| 14.3 | Switch Panel | motorhome-rv-switch-panel | 1× | 1 | · | part |
| 15 | Leveling System 3 parts | motorhome-rv-leveling-system | 1× | 1 | 31 | assembly |
| 15.1 | Hydraulic Jack | motorhome-rv-leveling-jack | 4× | 4 | · | part |
| 15.2 | Leveling Power Unit 3 parts | motorhome-rv-leveling-pump | 1× | 1 | 23 | assembly |
| 15.2.1 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 1 | 3 | assembly |
| 15.2.2 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 1 | 19 | assembly |
| 15.2.3 | Hydraulic Pump | motorhome-rv-hydraulic-pump | 1× | 1 | · | part |
| 15.3 | Relay | relay | 4× | 4 | · | part |
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Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $8k–$90k. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇯🇵Toyota
global.toyota ↗
|
Toyota City, JP | Automaker | made to order | 16–28 wks |
| volkswagen-group.com ↗ | Wolfsburg, DE | Automaker | made to order | 16–28 wks |
| gm.com ↗ | Detroit, US | Automaker | made to order | 16–28 wks |
| hyundai.com ↗ | Seoul, KR | Automaker | made to order | 16–28 wks |
|
🇨🇳BYD
byd.com ↗
|
Shenzhen, CN | EV & battery manufacturer | made to order | 16–28 wks |
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