Mosselman MSL35-45 Stage 1 Turbo Upgrade for BMW N20 PWG Pneumatic Wastegate (pre-07/2013) - Direct-Fit Uprated/Hybrid Turbocharger Replacement F20/F21 125i, F30/F31/F34 328i N20B20 - Bolt-On Plug & Play Turbo UK

Mosselman MSL35-45 Stage 1 Turbo Upgrade - BMW N20 PWG pre-July 2013 - Direct-Fit, Fast-Spooling, OEM-Grade

Transform the way your F-series four-cylinder petrol BMW pulls through the rev range. The Mosselman MSL35-45 Stage 1 is a bolt-on uprated turbocharger for N20 PWG engines that delivers stronger midrange torque, sharper throttle response and smooth, repeatable performance while keeping factory-like manners. Built from brand-new BMW turbocharger units enhanced with Mosselman’s in-house engineered components, this is a dependable, daily-drivable upgrade for enthusiasts who want more pace without sacrificing reliability.

Why it works so well on the N20 PWG

• Rapid spool and low lag - lively response with a wide, usable powerband
• Genuine-quality hardware - assembled from new OE turbo cores with precision Mosselman internals
• Direct replacement - bolt-on installation for PWG pneumatic wastegate cars, no fabrication required
• Engineered in-house in the Netherlands for consistent quality control and durability
• Retains factory drivability - OEM-plus refinement with serious performance potential once calibrated
• Ideal for road, fast road and track-day use when paired with suitable supporting mods and a proper ECU remap

We have fitted and supplied these MSL35-45 units to many N20 cars and the feedback has been superb. Customers report crisp response, repeatable heat management and a confident, OEM-like feel with the extra shove you want from a Stage 1 hybrid-style upgrade.

Vehicle compatibility - PWG pneumatic wastegate only

For BMW N20 engines with PWG pneumatic wastegate built before 07/2013:

1 Series

• F20 125i - 2011 to 07/2013
• F21 125i - 2011 to 07/2013

3 Series

• F30 328i - 2011 to 07/2013
• F31 328i - 2011 to 07/2013
• F34 328i - 2011 to 07/2013

Part number

TUN20.3242.PWG

What you get

• Mosselman MSL35-45 Stage 1 turbocharger built from a new BMW turbo core
• Factory-style orientation and connections for straightforward replacement of the stock N20 PWG unit
• Premium engineering focused on fast spool, strong midrange and OEM-level reliability

Core charge info

A refundable core deposit is available. Return your old turbo to Mosselman for inspection and, once approved, the core charge is refunded. If you would rather keep your original unit, you can do so instead of returning it.

Fitting and support in the UK

Want it installed properly with calibration guidance and aftercare. Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk. We know the N20 PWG platform inside out and can advise on the right supporting hardware and ECU tuning for your goals.

Compatibility check before dispatch

To ensure the correct turbo for your car, we run a fitment check prior to shipping. Please provide your UK registration number or the last 7 characters of your VIN at checkout.

Looking for this upgrade under different terms

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Manufacturer: Mosselman