Turbosmart Kompact Dual Port BOV Kit - BMW N54 135i/335i/535i/Z4 - Pair

The Turbosmart Kompact Dual Port Kit upgrades the factory plastic diverter and bypass valves on the BMW N54 twin-turbo 3.0L (135i, 335i, 535i and Z4) with a pair of Motorsport-proven billet aluminum valves. Each valve uses Turbosmart's Boost-Balance system and a 28mm high-flow positive-sealing piston for reliable performance and a direct swap for the OEM units. The dual-port design vents to atmosphere and recirculates for quiet daily driving with full response under boost.

Specifications

Documents: Installation Instructions (PDF)

This part fits:

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