Transmission parts and their functions

7 top-level parts · 28 parts in total · full bill of materials below

#	Part	Qty	What it does
1	Torque Converter 3 parts	1×
2	Valve Body	1×	Hydraulic control valve body.
3	Helical Gear Pair	6×	planetary gear sets
4	Gearbox Housing	1×	Rigid cast housing that holds the gears and bearings in alignment, contains the lubricant, and mounts the gearbox to the machine.
5	Open Differential 4 parts	1×	Open bevel-gear differential that splits drive torque between two wheels while letting them turn at different speeds in a corner.
6	Gear Oil	7×	litres ATF
7	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.

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Build & assembly graph

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Bill of materials for Transmission

7 top-level lines · 14 rows shown · 28 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Torque Converter 3 parts	gasoline-car-torque-converter	1×	1	3	assembly
1.1	Impeller	gasoline-car-impeller	1×	1	·	part
1.2	Turbine	gasoline-car-turbine	1×	1	·	part
1.3	Lock-up Clutch	gasoline-car-lockup-clutch	1×	1	·	part
2	Valve Body	gasoline-car-valve-body	1×	1	·	part
3	Helical Gear Pair	gear-pair	6×	6	·	part
4	Gearbox Housing	gearbox-housing	1×	1	·	part
5	Open Differential 4 parts	differential	1×	1	6	assembly
5.1	Differential Case	diff-case	1×	1	·	part
5.2	Side Gear	side-gear	2×	2	·	part
5.3	Pinion Gear	pinion-gear	2×	2	·	part
5.4	Cross Pin	cross-pin	1×	1	·	part
6	Gear Oil	gear-oil	7×	7	·	part
7	Oil Seal	oil-seal	4×	4	·	part

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Where the transmission is used

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

• Automobiles 1 Gasoline Car

Used in 1 assembly

Gasoline Car

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 $1–$300. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sona Comstar sonacomstar.com ↗	Gurugram, IN	EV driveline & motors	1,000 pcs	8–12 wks
🇨🇳Zhejiang Shuanghuan shdrive.cn ↗	Yuhuan, CN	Gears & driveline	1,000 pcs	8–12 wks
🇮🇳Bharat Gears bharatgears.com ↗	Mumbai, IN	Automotive gears	1,000 pcs	8–12 wks
🇮🇳ZF India zf.com ↗	Pune, IN	Driveline & chassis	1,000 pcs	8–12 wks
🇨🇳Hangzhou Advance advancegroup.cn ↗	Hangzhou, CN	Gearboxes	1,000 pcs	8–12 wks