BigBoost B58 EFR Turbo Kit

BigBoost’s stage 3-4 turbo for the B58 Gen 1 and 6 Port TU engine!

What’s included?

• BorgWarner EFR 8374, 8474, 9174 or 9280
• Cast twin-scroll manifold 40% larger than stock runners and area with external wastegate port.
• Aviation grade stainless steel oil feed lines
• Oil feed and return fittings for turbo
• Oil feed fittings for engine
• Oil drain adapter
• Lower Boost Pipe
• Aluminum 4″ inlet pipe
• Silicone couplers
• Smart Seal Stainless Steel Hose clamps
• Turbo coolant inlet and outlet -6 an fittings 
• Engraved Heat Shield
• VPE V Band Clamp
  
• OEM O-ring kit
• Silicone Coolant Hose Kit
• EWG Mounting Bracket
• EWG Linkage Kit

EFR 8374 to 650 WHP 8474 and 9174 up to 750 WHP, 9280 up to 900-1000 WHP

BigBoost Turbo shipping & returns

• Built to order: turbo kits are built to order and may take up to 15 weeks to ship.
• Returns: all returns need prior authorization (RMA) and must be authorized, shipped and received within 30 days. Parts sent back without an RMA may be refused. Final eligibility is decided after the part is received and inspected.

To start a return or ask a question, contact us with your order number.