What's in the box: BMW B58 Turbo Install Kit, Gen 1 B58, for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket

BMW B58 Turbo Install Kit, Gen 1 B58, for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket

$184.99
Skip to product information
What's in the box: BMW B58 Turbo Install Kit, Gen 1 B58, for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket
  • What's in the box: BMW B58 Turbo Install Kit, Gen 1 B58, for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket
  • What's in the box: BMW B58 Turbo Install Kit, Gen 1 B58, for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket
BMW B58 Turbo Install Kit, Gen 1 B58, for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket

IA Euro

BMW B58 Turbo Install Kit, Gen 1 B58,for 340i, 440i, M240i, 540i, 740i 2016-2020: Manifold Gasket, 7 Nuts, 7 Bolts, Line O-Rings, Downpipe Gasket

Check fitment & part details
$184.99
Availability
In stock
Maker
IA Euro
Part type
Turbocharger Install Kit

Free US shipping on orders of $149 or more. 45-day returns on eligible items.

The repair guide

B58 Turbo Swap Guide

This guide follows BMW's own repair instructions for the 2019 and newer G20 M340i xDrive (B58, second generation). The same turbo comes out the same way on most B58 cars. We list where the F-series cars (340i, 440i, M240i) differ. Upgrading? The swap is the same job as a stock replacement. The tune, the fuel and the parts around it are what change.

Engine stays inThe turbo comes out from below. Plan on unbolting the passenger engine mount for room.
7 new nutsM7 flange nuts, tightened in five passes: 10, 10, 16, 16, 16 Nm.
Prime itFill the new turbo with BMW's turbo additive (17 ml) and fresh oil before it ever spins.
IA EURO illustration of the BMW B58 turbo and exhaust manifold, numbered: expansion bellows, exhaust manifold rail, electric wastegate actuator, clean air inlet, charge air outlet, turbine housing
The B58 turbo and the exhaust manifold for cylinders 3 and 4 are one cast part. 1 expansion bellows (never bend them), 2 exhaust manifold rail, 3 electric wastegate actuator (never pull on it), 4 clean air inlet, 5 charge air outlet, 6 turbine housing (lift it here).

Read this before you start

  • Order the right manifold gasket. The G20 M340i uses 11658669733. Earlier F-series B58 cars use a different gasket (11657643149). Check your car before you order.
  • Bigger turbo means a tune first. A bigger turbo on the stock software gains nothing. Have your tune (MHD or similar) ready before the car leaves the stands. Newer G-series DMEs can be locked and may need a bench unlock before any flash tool can write to them, so check yours before you buy the turbo.
  • Catted downpipes only. Remove the catalytic converter and you have an illegal car and a failed inspection.
  • Plan for coolant and oil. The turbo's coolant lines drain a lot. You will drain the high-temperature cooling circuit and refill and bleed it after. Do an oil change with the job. A fresh turbo should never see old oil.

Tools and parts

  • Jack stands or a lift. This is an underbody job on the G20.
  • 22 mm oxygen sensor socket, torque wrench that reads down to 5 Nm, plastic trim tools.
  • Coolant drain pan, fresh BMW coolant, a vacuum coolant filler if you have one.
  • BMW turbo additive, 17 ml (BMW 83195B305D6), and fresh engine oil to prime the turbo.
  • All the one-time seals, nuts and bolts below. Never reuse them.

Gen 2 kit (G20 M340i, Z4, 2020 X3/X4 M40i) Gen 1 kit (340i, 440i, M240i, 540i, 740i)

The passenger engine mount

BMW's own turbo procedure for the G20 leaves the engine mounts alone. On the shop floor, the passenger (right) engine mount usually has to come off so the engine can be raised a little and the turbo has room to come out. If you do it:

  • Support the engine from above with an engine support bar before you touch the mount. BMW raises the engine only 10 mm for its mount job.
  • Lower the engine fully onto the mounts before you tighten anything, so nothing is preloaded.
  • Engine mount to front axle support: M8, 19 Nm. Mount bracket to engine: M10, 38 Nm. Mount to bracket: new M12 bolt, 110 Nm.
  • Replacing the mount while you're there? The passenger side is BMW 22116860472 on the G20 M340i.
IA EURO illustration of the BMW B58 engine mounts with the passenger side mount highlighted
The passenger (right) engine mount is the one highlighted, BMW 22116860472 on the G20 M340i. New M12 bolt, 110 Nm.

Removing the turbo: the short version

  1. Engine cold. Hood to the service position. Remove the engine covers, the front-end struts and the top cross braces.
  2. Remove the fan cowl, the intake silencer housing, the engine ventilation line and the clean air pipe.

The rest of the guide

Step by step, torque specs and the fluid for your build date. Free, two quick answers and it opens.

Read the full guide

Fitment and details

Pulling the turbo on a Gen 1 B58? BMW says to renew the manifold gasket, the flange nuts and bolts and every line seal. This kit is that list in one box: 23 pieces, so the job gets done once. Use it for a replacement turbo, a hybrid or a big-turbo upgrade.

What is in the B58 turbo install kit?

  • 7 x turbo flange nut M7 with spring washer, Genuine BMW 11658670587, BMW 11 65 8 670 587
  • 7 x turbo hex bolt M7x27, Genuine BMW 11658623438, BMW 11 65 8 623 438
  • 2 x oil feed line O-ring 11 x 1.78 mm, Genuine BMW 11427590576, BMW 11 42 7 590 576
  • 2 x oil return line O-ring 15 x 1.78 mm, Genuine BMW 11427590577, BMW 11 42 7 590 577
  • 1 x turbo to downpipe gasket ring, Victor Reinz 71-15267-00, BMW 18 32 8 612 538
  • 1 x exhaust manifold to turbo gasket, Elring 11657643149ELR, BMW 11 65 7 643 149
  • 3 x coolant line O-ring 12 x 1.5 mm, Ajusa 11537590575, BMW 11 53 7 590 575

Not included, but BMW also says to renew them: the turbo-to-downpipe V-band clamp (BMW 18 32 8 612 537), the turbo support screws, the heat shield bolts and the catalytic converter holder nut. BMW also says to prime the new turbo with its turbo additive. Ask us and we will add any of them to your order.

Which BMWs does it fit?

Gen 1 B58 cars, per BMW's parts catalog (US models, catalog data through 2019). This version fits:

  • 2017 BMW M240i (F22 Coupe) B58
  • 2017 BMW M240i xDrive (F22 Coupe) B58
  • 2018-2020 BMW M240i (F22 LCI Coupe) B58
  • 2018-2020 BMW M240i xDrive (F22 LCI Coupe) B58
  • 2017 BMW M240i (F23 Convertible) B58
  • 2017 BMW M240i xDrive (F23 Convertible) B58
  • 2018-2020 BMW M240i (F23 LCI Convertible) B58
  • 2018-2020 BMW M240i xDrive (F23 LCI Convertible) B58
  • 2016-2019 BMW 340i (F30 LCI Sedan) B58
  • 2016-2019 BMW 340i xDrive (F30 LCI Sedan) B58
  • 2017 BMW 440i (F32 Coupe) B58
  • 2017 BMW 440i xDrive (F32 Coupe) B58
  • 2017-2020 BMW 440i (F32 LCI Coupe) B58
  • 2017-2020 BMW 440i xDrive (F32 LCI Coupe) B58
  • 2017 BMW 440i (F33 Convertible) B58
  • 2017 BMW 440i xDrive (F33 Convertible) B58
  • 2017-2020 BMW 440i (F33 LCI Convertible) B58
  • 2017-2020 BMW 440i xDrive (F33 LCI Convertible) B58
  • 2017-2019 BMW 340i xDrive (F34 LCI Gran Turismo) B58
  • 2017 BMW 440i (F36 Gran Coupe) B58
  • 2017 BMW 440i xDrive (F36 Gran Coupe) B58
  • 2017-2020 BMW 440i (F36 LCI Gran Coupe) B58
  • 2017-2020 BMW 440i xDrive (F36 LCI Gran Coupe) B58
  • 2018-2019 BMW X3 xDriveM40i (G01 SUV) B58
  • 2018-2019 BMW X4 xDriveM40i (G02 SUV) B58
  • 2016-2019 BMW 740i (G12 Sedan) B58
  • 2016-2019 BMW 740i xDrive (G12 Sedan) B58
  • 2017-2019 BMW 540i (G30 Sedan) B58
  • 2017-2019 BMW 540i xDrive (G30 Sedan) B58
  • 2018-2019 BMW 640i xDrive (G32 Gran Turismo) B58

The G20 M340i, Z4 M40i and 2020 X3 and X4 M40i take the Gen 2 version of this kit. Newer B58 cars (2021 and later) are past the catalog we checked, so send us your VIN first.

How to install it

BMW's steps, torque specs and the flange nut order are in our guide: BMW B58 turbo replacement.

FAQ

  • Can I reuse the old flange nuts and gasket? BMW says no: the nuts and gasket are one-time parts.
  • Does it fit a big turbo upgrade? It covers the factory joints: manifold to turbo, oil and coolant lines and turbo to downpipe. Check your upgrade's own instructions for anything extra it needs.
  • How do I confirm it fits my car? Send us your 17-digit VIN before you order and we will confirm fit.

Reviews

You may also like