BMW M3 e36 e46 SMG to Manual Conversion Transmission Kit Getrag 420g 6 Speed

SMG to Manual Conversion Kit E46 M3 (1999-2006) & E36 M3 (1995-1999)

KIT WITH DRAWING FOR SMG BELLHOUSING MACHINING + INSTALL MANUAL

This kit provides all the essential hardware needed to convert your SMG bellhousing for manual transmission use (adding self-centering detents, springs, and related components). It includes a detailed technical drawing and step-by-step installation manual.

If you need part numbers for additional swap components (e.g., slave cylinder, master cylinder, shifter assembly, clutch lines, etc.), just let me know—I can provide recommendations.

Choose a professional seller for bellhousing machining and kit installation I offer expert bellhousing machining services (professional mill work, not hand-drilling) along with full kit support. If you have questions during your build or need guidance, I'm here to help. Check the link below for my machining service, or browse my other listings.

• Economy Shipping (4–14 business days) — Free
• FedEx Express Saver (1–3 business days) — Available upgrade Fast dispatch — Orders ship quickly!

Kit Contents :

• Torsion spring – 1 pc
• Bearing wheel – 1 pc
• Compression springs – 2 pc
• Locking pins – 2 pc
• Locking pin bushings – 2 pc
• Lock rings – 2 pc
• Sealing covers – 2 pc
• Custom spring pin – 1 pc (hardened steel with locking grooves for safe, easy installation)

Included with every order:

• Technical drawing
• Detailed installation manual (sent with the package)

Digital copies available: If you'd like photos of the parts or digital versions of the drawing/manual sent before or after purchase, just PM me or add a note/comment at checkout ("photos").

Compatibility:

• BMW E46 M3 (1999–2006) – Getrag 420G transmission
• BMW E36 M3 (1995–1999) – Getrag 420G

This kit is ideal for DIY SMG-to-6MT conversions when paired with professional bellhousing machining. 

Feel free to message with any questions—happy to assist with your build!