Engine Unit
AssemblySingle-cylinder four-stroke around 125 cc swing-mounted with an integral CVT and reduction gear. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Engine Unit parts and their functions
12 top-level parts · 37 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Crankcase | 1× | |
| 2 | Cylinder & Head 3 parts | 1× | |
| 3 | Piston & Rings | 1× | |
| 4 | Crankshaft | 1× | |
| 5 | Valvetrain (SOHC) 4 parts | 1× | |
| 6 | CVT Transmission 5 parts | 1× | Belt variator that gives twist-and-go drive with no manual gears. |
| 7 | Final Reduction Gear 4 parts | 1× | |
| 8 | Cooling 2 parts | 1× | Forced-air fan shroud over the finned barrel. |
| 9 | Spark Plug | 1× | Ignites the air-fuel mixture in a spark-ignition engine. |
| 10 | Ball Bearing | 4× | Deep-groove radial ball bearing. |
| 11 | Oil Seal | 4× | Spring-loaded rotary lip seal that keeps lubricant inside a housing and dirt out where a shaft passes through, sized to DIN 3760. |
| 12 | O-Ring Set | 1× | Set of elastomer rings seated in grooves to seal static or slow-moving joints against fluid and gas, sized to ISO 3601. |
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Bill of materials for Engine Unit
12 top-level lines · 30 rows shown · 37 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Crankcase | scooter-motorcycle-crankcase | 1× | 1 | · | part |
| 2 | Cylinder & Head 3 parts | scooter-motorcycle-cylinder | 1× | 1 | 3 | assembly |
| 2.1 | Cylinder Barrel | scooter-motorcycle-cylinder-barrel | 1× | 1 | · | part |
| 2.2 | Cylinder Head | scooter-motorcycle-cylinder-head | 1× | 1 | · | part |
| 2.3 | Head Gasket | scooter-motorcycle-head-gasket | 1× | 1 | · | part |
| 3 | Piston & Rings | scooter-motorcycle-piston | 1× | 1 | · | part |
| 4 | Crankshaft | scooter-motorcycle-crankshaft | 1× | 1 | · | part |
| 5 | Valvetrain (SOHC) 4 parts | scooter-motorcycle-valvetrain | 1× | 1 | 6 | assembly |
| 5.1 | Camshaft | scooter-motorcycle-camshaft | 1× | 1 | · | part |
| 5.2 | Valve | scooter-motorcycle-valve | 2× | 2 | · | part |
| 5.3 | Rocker Arm | scooter-motorcycle-rocker | 2× | 2 | · | part |
| 5.4 | Cam Chain | scooter-motorcycle-cam-chain | 1× | 1 | · | part |
| 6 | CVT Transmission 5 parts | scooter-motorcycle-cvt | 1× | 1 | 5 | assembly |
| 6.1 | Drive Variator Pulley | scooter-motorcycle-variator | 1× | 1 | · | part |
| 6.2 | Drive Belt | drive-belt | 1× | 1 | · | part |
| 6.3 | Centrifugal Clutch | scooter-motorcycle-clutch | 1× | 1 | · | part |
| 6.4 | Driven Pulley | scooter-motorcycle-driven-pulley | 1× | 1 | · | part |
| 6.5 | Variator Roller Set | scooter-motorcycle-roller-set | 1× | 1 | · | part |
| 7 | Final Reduction Gear 4 parts | scooter-motorcycle-final-drive | 1× | 1 | 8 | assembly |
| 7.1 | Helical Gear Pair | gear-pair | 2× | 2 | · | part |
| 7.2 | Gearbox Housing | gearbox-housing | 1× | 1 | · | part |
| 7.3 | Ball Bearing | ball-bearing | 3× | 3 | · | part |
| 7.4 | Oil Seal | oil-seal | 2× | 2 | · | part |
| 8 | Cooling 2 parts | scooter-motorcycle-cooling | 1× | 1 | 2 | assembly |
| 8.1 | Cooling Fan | scooter-motorcycle-fan | 1× | 1 | · | part |
| 8.2 | Fan Shroud | scooter-motorcycle-shroud | 1× | 1 | · | part |
| 9 | Spark Plug | spark-plug | 1× | 1 | · | part |
| 10 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 11 | Oil Seal | oil-seal | 4× | 4 | · | part |
| 12 | O-Ring Set | oring-set | 1× | 1 | · | part |
Where the engine unit is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
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 $500–$50k. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| weichai.com ↗ | Weifang, CN | Diesel & power engines | 50 units | 12–16 wks |
| cumminsindia.com ↗ | Pune, IN | Diesel engines | 50 units | 12–16 wks |
|
🇨🇳Yuchai
yuchai.com ↗
|
Yulin, CN | Diesel engines | 50 units | 12–16 wks |
| koel.co.in ↗ | Pune, IN | Diesel & gas engines | 50 units | 12–16 wks |
| ashokleyland.com ↗ | Chennai, IN | Engines & commercial vehicles | 50 units | 12–16 wks |