Speed Sensor Kit — Mercedes-Benz 722.9 7G-Tronic Automatic Transmission | Y3/8n1 / Y3/82

Fix Gear Selection Faults on Your Mercedes 7G-Tronic — Complete Speed Sensor Kit.

The Mercedes 722.9 7G-Tronic automatic transmission uses two speed sensors (Y3/8n1 and Y3/82) to monitor input and output shaft speeds. When either sensor fails, the TCU cannot calculate correct gear ratios — causing gear selection faults, harsh shifting, limp mode, and transmission warning lights. This complete kit includes both sensors.

What's Included

• Speed sensor Y3/8n1 (input shaft)
• Speed sensor Y3/82 (output shaft)

Vehicle Compatibility

Mercedes-Benz models with 722.9 7G-Tronic 7-speed automatic transmission

• Mercedes

Orders ship within 1–2 business days.

Standard delivery:

• USA: Some items ship from our US warehouse and arrive within 3 business days.
• USA-EU: 10–21 business days
• Worldwide: 14–30 business days

Shipping cost is shown at checkout.

Can I exchange or return an item?

Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights

To use this feature, please make sure that:

• the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
• the goods are fully completed and the integrity of the packaging is not violated
• retained all labels and factory markings