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M50 Manifold Conversion Adapter Kit for 1996-99 BMW M52/S52 3-Series + M3 [E36]


Quick Overview

Sku # : turner-motorsports-m50-manifold-kit-ng
Base Kit
Include Modified Fuel Rail Cover?
Do you need a M50 Manifold?
Borla Performance Industries bri
Get your M50 Manifold Conversion Adapter Kit for your BMW E36 M52 or S52!

ModBargains.com now offers M50 Manifold Conversion Adapter Kits to convert any 1996-99 M52 or S52 engine to an M50 intake manifold.

This kit includes everything to fit an OBDI M50 manifold to an OBDII M52 or S52 engine (1996-1999). It takes the guesswork out of adding the M50 manifold to your engine. The kit includes a CNC machined adapter, with all hardware and gaskets, that allows the freer flowing M50 manifold to be installed while maintaining full function of M52/S52 components including factory PCV cyclone / oil seperator valve. No vacuum leaks, no check engine lights. And the entire kit is completely reversible. Turner Motorsport has dealt with the problems from other kits and this adapter block is – by far – the best solution.

The base price of this kit does not include the M50 manifold, but is available for purchase. You can pick up a used manifold from a 1992-1995 E36 325i or a 1995 M3 3.0 liter. You can find them in local junk or scrap yards, online at Craigslist or eBay, or from various forums. If you would rather not deal with the potential pitfalls of a used part, we can offer a new Original BMW manifold to go with the adapter. While expensive, the new manifold is guaranteed to be in perfect condition with no cracks, warping, or foreign objects hidden inside. A new factory BMW manifold can be added to your order by selecting the option below.

With the introduction of the 1996 model year came the OBDII emissions compliant engine. Among the many changes the OBDII engines received was a more restrictive air intake manifold. Where the older M50/S50 engines continued to make power up in the higher RPMs, the newer M52/S52 ran out of breath, limiting high-end horsepower, but boosting low-end torque. Converting the OBDII cars to the 1995 and earlier OBDI manifold is a popular modification to remove this high-rpm restriction. 

To best maximize the horsepower gains of this modification, you should be using the M50 manifold with bigger cams, HFM, injectors, and software. We have found this combination of upgrades and software to yield the best results for producing top-end power. Note: using the M50 manifold shifts the power band higher in the RPM range. This is GREAT for track cars but not well-suited for street cars where the OBDII manifold works best to produce torque at lower RPM. Presently, we do not have software tuned for only the M50 manifold without cams or the HFM upgrade. Check our website again for future product releases. We currently offer custom mapped Shark Injectors for these packages:
E36 M3 - 3.5" HFM/24lb injectors/Schrick cams/stock OBDII manifold
E36 M3 - 3.5" HFM/24lb injectors/Schrick cams/M50 manifold

Optional fuel rail cover. The standard M52/S52 fuel rail cover is too tall for the M50 manifold and does not have the proper brackets for securing it in place over the fuel rail. We can correctly modify the stock M52 fuel rail cover for you to complete the factory appearance.

Call 714-582-3330 if you have any questions or Order Online to save today!

Installed on Turner Supercharged E36 Project


1996-99+ E36 3-series w/M52 or S52, incl M3 BMW


  • Less Restriction
  • More High End Horsepower
  • Shifts Powerband Higher Into the Rev Range
  • Available with NEW M50 Manifold 11611735727-SH25


If you are in the Southern California area, let us install the M50 Manifold Conversion Adapter Kit for you!

Call 714-582-3330 to order and set up your appointment today!

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