GFB DV+ is a direct-replacement diverter valve upgrade for the BMW N20 turbo engine. It retains the factory solenoid and ECU control for plug-in installation while replacing the failure-prone factory plastic diaphragm with a metal piston, opening about 10% faster and closing about 50% faster than stock for sharper throttle response and reliable boost holding.
Specifications
| Type | Direct-replacement diverter valve (DV+) |
| Fitment | BMW N20 turbo engine |
| Control | Retains factory solenoid and ECU control |
| Operation | ~10% faster opening / ~50% faster closing vs factory |
| Part Number | T9357 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2016 | BMW | 228i | Base |
| 2015-2016 | BMW | 228i xDrive | Base |
| 2013-2018 | BMW | 320i | Base |
| 2013-2018 | BMW | 320i xDrive | Base |
| 2012-2016 | BMW | 328i | Base |
| 2014-2016 | BMW | 328i GT xDrive | Base |
| 2013-2016 | BMW | 328i xDrive | Base |
| 2014-2016 | BMW | 428i | Base |
| 2015-2016 | BMW | 428i Gran Coupe | Base |
| 2014-2016 | BMW | 428i xDrive | Base |
| 2015-2016 | BMW | 428i xDrive Gran Coupe | Base |
| 2012-2016 | BMW | 528i | Base |
| 2012-2016 | BMW | 528i xDrive | Base |
| 2013-2015 | BMW | X1 | sDrive28i |
| 2012-2015 | BMW | X1 | xDrive28i |
| 2015-2017 | BMW | X3 | sDrive28i |
| 2013-2017 | BMW | X3 | xDrive28i |
| 2015-2018 | BMW | X4 | xDrive28i |
| 2012-2016 | BMW | Z4 | sDrive28i |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
