Mosselman BMW N55 PWG Upgraded Stage 2 Turbocharger MSL48-60 For BMW 135i, 335i, M135i & more

The Mosselman Upgrade Turbocharger (MSL48-60) for the BMW N55 PWG (Pneumatic Wastegate) engine delivers a substantial increase in performance while retaining OEM-level reliability and drivability. By optimising airflow and turbine efficiency, this upgrade unlocks significantly higher power potential without compromising the core characteristics of the N55 platform.

Depending on supporting modifications and fuel type, the MSL48-60 turbocharger is capable of producing up to 600hp*. This makes it a well-balanced solution for owners of early N55 PWG vehicles looking for a proven, factory-based turbo upgrade with strong real-world results.

The turbo is based on a brand-new OEM turbocharger, enhanced with multiple Mosselman-designed components to ensure durability, consistency, and long-term reliability. Thanks to its OEM foundation, installation is fully plug-and-play with no additional modifications required. Each unit is supplied with a limited 1-year Mosselman warranty.

Key Features

• Performance capability of up to 600hp*

• Designed specifically for N55 PWG (Pneumatic Wastegate) engines

• Based on a brand-new OEM turbocharger

• Upgraded compressor and turbine wheels

• Improved airflow and efficiency

• True plug-and-play installation

• Extremely low core charge (where applicable)

• Limited 1-year Mosselman warranty

*Power figures depend on supporting modifications and fuel type.

Compatible Vehicles

(PWG vehicles only – produced before 07/2013)

• BMW E8X 135i (pre-07/2013)

• BMW E9X 335i (pre-07/2013)

• BMW F2X M135i (pre-07/2013)

• BMW F3X 335i (pre-07/2013)

• BMW F1X 535i (pre-07/2013)

• BMW 640i (pre-07/2013)

Core Charge Options – Important Information

This product is available with two purchase options. Selecting the correct option at checkout is essential to avoid delays, additional charges, or order clarification.

Option 1: No Core Charge

Only select this option if:

• You have already sent your original PWG turbocharger to us in advance, or

• You are physically dropping off your turbocharger at our facility and collecting the upgraded unit in person

In short, this option is only valid when we already have your original turbocharger in our possession at the time of order.

If your turbo has not already been sent or dropped off, do not select this option. Selecting it incorrectly will cause delays while the order is corrected.

Option 2: With Core Charge (Refundable)

Select this option if:

• You are not sending your turbocharger to us in advance, and

• You want to receive the Mosselman upgraded turbo first, then return your original unit afterwards

A core charge is applied at checkout. Once your original turbocharger is returned and approved as a usable core by Mosselman, the core charge will be refunded in full.

This option allows you to minimise vehicle downtime by installing the upgraded turbo first and returning the original unit later.

Core Charge Disclaimer

• Core charges are refundable only after the original turbocharger is returned

• Returned units must be complete and in usable condition

• All cores are subject to inspection and approval by Mosselman

• Selecting the correct option at checkout is the customer’s responsibility

If you are unsure which option applies to your vehicle or situation, please contact us before placing your order.

Returns Policy Notice

Please note: Due to complex logistics and the bespoke nature of the product, all Mosselman turbochargers are non-refundable and excluded from our returns policy.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.