4-Stroke 3-Cyl Engine parts and their functions

10 top-level parts · 52 parts in total · full bill of materials below

#	Part	Qty	What it does
1	Engine Block	1×	Aluminum cylinder block casting.
2	Crankshaft	1×	Forged steel crankshaft.
3	Piston Assembly 4 parts	3×	Piston with rings, pin and connecting rod.
4	Cylinder Head 4 parts	1×	Head with valvetrain and camshaft.
5	Supercharger 4 parts	1×	Belt-driven centrifugal supercharger.
6	Fuel Injection 4 parts	1×	Throttle body, rail and injectors.
7	Exhaust System 3 parts	1×	Water-jacketed manifold and waterbox.
8	Spark Plug	3×	Ignites the air-fuel mixture in a spark-ignition engine.
9	Oil Seal	2×	Spring-loaded rotary lip seal that keeps lubricant inside a housing and dirt out where a shaft passes through, sized to DIN 3760.
10	Fastener Set	1×	Bolts, nuts, and washers.

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Bill of materials for 4-Stroke 3-Cyl Engine

10 top-level lines · 29 rows shown · 52 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Engine Block	jet-ski-engine-block	1×	1	·	part
2	Crankshaft	jet-ski-crankshaft	1×	1	·	part
3	Piston Assembly 4 parts	jet-ski-piston	3×	3	4	assembly
3.1	Piston	jet-ski-piston-body	1×	3	·	part
3.2	Piston Ring Set	jet-ski-piston-rings	1×	3	·	part
3.3	Connecting Rod	jet-ski-conrod	1×	3	·	part
3.4	Wrist Pin	jet-ski-wrist-pin	1×	3	·	part
4	Cylinder Head 4 parts	jet-ski-cylinder-head	1×	1	16	assembly
4.1	Head Casting	jet-ski-head-casting	1×	1	·	part
4.2	Camshaft	jet-ski-camshaft	2×	2	·	part
4.3	Poppet Valve	jet-ski-valve	12×	12	·	part
4.4	Head Gasket	jet-ski-head-gasket	1×	1	·	part
5	Supercharger 4 parts	jet-ski-supercharger	1×	1	5	assembly
5.1	Supercharger Housing	jet-ski-sc-housing	1×	1	·	part
5.2	Supercharger Impeller	jet-ski-sc-impeller	1×	1	·	part
5.3	Ball Bearing	ball-bearing	2×	2	·	part
5.4	Oil Seal	oil-seal	1×	1	·	part
6	Fuel Injection 4 parts	jet-ski-fuel-injection	1×	1	8	assembly
6.1	Throttle Body	jet-ski-throttle-body	1×	1	·	part
6.2	Fuel Rail	jet-ski-fuel-rail	1×	1	·	part
6.3	Fuel Injector	jet-ski-injector	3×	3	·	part
6.4	Connector	connector	3×	3	·	part
7	Exhaust System 3 parts	jet-ski-exhaust	1×	1	3	assembly
7.1	Exhaust Manifold	jet-ski-exhaust-manifold	1×	1	·	part
7.2	Waterbox Muffler	jet-ski-waterbox	1×	1	·	part
7.3	O-Ring Set	oring-set	1×	1	·	part
8	Spark Plug	spark-plug	3×	3	·	part
9	Oil Seal	oil-seal	2×	2	·	part
10	Fastener Set	fastener-set	1×	1	·	part

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Where the 4-stroke 3-cyl engine is used

1 product across 1 domain contain it, directly or inside a sub-assembly

• Marine 1 Jet Ski

Used in 1 assembly

Jet Ski

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 Power weichai.com ↗	Weifang, CN	Diesel & power engines	50 units	12–16 wks
🇮🇳Cummins India cumminsindia.com ↗	Pune, IN	Diesel engines	50 units	12–16 wks
🇨🇳Yuchai yuchai.com ↗	Yulin, CN	Diesel engines	50 units	12–16 wks
🇮🇳Kirloskar Oil Engines koel.co.in ↗	Pune, IN	Diesel & gas engines	50 units	12–16 wks
🇮🇳Ashok Leyland ashokleyland.com ↗	Chennai, IN	Engines & commercial vehicles	50 units	12–16 wks