Gears and transmission
ZF 6HP21 six-speed automatic - full internals
- Bounding box
- 800.0 × 412.1 × 330.0 mm
- Engine
- Precision B-rep
- Parameters
- 4
- Published
- November 8, 2026
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The prompt
Build a full BMW E61 from 2004 with the M54B25 engine and 6HP21 transmission, very detailed, every part designed separately. Module 3: ZF 6HP21 six-speed automatic with converter, clutch packs, planetary gearsets, shafts, case and valve body.
Parameters
| Name | Value | Range |
|---|---|---|
| Crank axis height above ground | 320 mm | 290 – 360 |
| Engine block rear face X (front axle = 0) | -100 mm | -150 – -50 |
| Bell housing outer radius | 165 mm | 150 – 175 |
| Main case outer radius | 130 mm | 125 – 135 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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