For BMW G-Series & Toyota A91 6-Port B58 Platforms

VTT-FAB is proud to offer the premiere top-mount single turbo system for the BMW G-Series and Toyota A91 B58 platforms. This kit is 100% made in the USA at our Hayward, CA facility, using only the highest-quality materials and components.

At the core is a hand-fabricated equal-length 321 stainless steel manifold with billet flanges, designed for maximum flow, durability, and that signature 6-into-1 turbo sound. The system is paired with our factory-controlled external wastegate setup, featuring a Turbosmart 60mm Straight Gate. This innovative design allows full external gate control through the OEM ECU — no additional boxes, MAC solenoids, or vacuum/boost lines required. Simply reuse your factory actuator with our adapter for seamless, plug-and-play control from 0 PSI all the way up to your turbo’s limits.

Unlike other kits, the VTT-FAB system uses no silicone couplers. Instead, we provide VTT-FAB HD clamps to eliminate the risk of blown boost hoses under extreme load.

⚠️ Important Notes:

• Every VTT-FAB kit is built to order and cannot be canceled once fabrication begins. Please order carefully.

• If your kit of choice is listed out of stock, email Sales@VTT for current build times.

• Garrett turbo options are oil-cooled only (no water lines). This is perfectly fine for street and drag applications. For extended track/road-race use, we recommend adding water cooling lines.

Kit Contents

• Manifold (VTT-FAB-074) w/ 3” V-band clamp

• Downpipe w/ V-band clamps (options for factory-style, race midpipe, or turndown)

• Charge pipe + 2x VTT-FAB 3″ HD clamps

• Oil feed line (16” hose, -4AN swivel fittings)

• Oil drain line (13” hose, -10AN swivel fittings)

• Turbosmart 60mm Straight Gate + 2x V-band clamps

• Wastegate accessories: heat sleeve, wiring harness (18” extension), arms & clips

• Fittings & adapters:

  • -4AN 1/8” NPT steel feed fitting

  • VTT-FAB-083 drain

  • 040 10AN

  • 036 H2O block

  • 048 feed

  • 042 vent block

  • Vacuum/boost adapter

• Hardware: M8 drain bolts (x2), exhaust nuts (x8), lower exhaust bolts (x8)

• Gaskets: head-to-manifold gasket (x1)

• Air filter or velocity stack (x1)

• Optional: VTT-FAB turbo blanket, Turbosmart/Tial BOV, or block-off plate

✅ Made in the USA
✅ No compromises in quality
✅ Plug-and-play boost control with OEM ECU

The VTT-FAB B58 Top-Mount Single Turbo Kit is the ultimate solution for enthusiasts who demand maximum performance, durability, and simplicity — without sacrificing control.

• Fully fabricated in-house (Hayward, CA) with U.S.-sourced parts

• Equal-length 321 stainless manifold with billet collector

• Full 4″ TIG-welded downpipe (factory-style termination or race 4″ single with optional turndown)

• VTT-FAB factory-controlled Turbosmart straight gate system — OEM ECU boost control ready

• 1.25″ primaries for faster spool & high exhaust velocity

• Zero external boost control needed

• That iconic 6-into-1 turbo sound no divided housing can match

• Charge pipe flanged for Turbosmart or Tial BOV (with optional block-off plate)

• No silicone connectors — only VTT-FAB HD clamps for ultimate reliability

Please make sure this part matches your vehicle before ordering.

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number (UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.

VTT-FAB-B58-SINGLE

Manufactured by

VTT - Vargas Turbocharger Technologies