Turbocharger for Mercedes Benz SLC300 (2017-2020) 2.0L

Direct-Replacement OE-Fit Turbocharger for 2017-2020 Mercedes Benz SLC-Class (R172)

What it Does: The direct-replacement turbocharger replaces a damaged or worn factory forced-induction assembly on the 2017-2020 SLC-Class to eliminate boost leaks, restore factory manifold pressure, and resolve low-boost fault codes.

The Stock Mercedes Benz SLC-Class Wastegate Wear & Thermal Degradation

The factory forced induction system on the M274 engine is subject to intense thermal cycling and high exhaust manifold gas velocities. Over time, the internal wastegate flapper mechanism wears down and develops excessive play, causing severe exhaust blow-by, sluggish spool, and persistent underboost trouble codes (such as P0299). Additionally, high oil operating temperatures can lead to oil coking inside the center housing rotating assembly (CHRA), causing journal bearing wear, excessive shaft play, seal failure, oil blow-by through the compressor housing, and noticeable power loss across the rev band.

The Engineering Solution

Manufactured to restore precise OE boost parameters, this replacement turbocharger features a precision high-speed dynamically balanced rotating assembly designed for vibration-free spool and quick transient throttle response. The high-grade ductile iron turbine housing resists thermal fatigue, warping, and cracking under peak exhaust temperatures. Built with factory-spec coolant passages, precision oil feed ports, and direct-fit flange geometry, it installs seamlessly onto the R172 chassis without requiring ECU recalibration, pipe modifications, or custom adapter plates.

What's Included

• 1 × Complete Turbocharger Assembly
• Installation Accessories

Technical Specifications

Compatibility

• 2017 Mercedes-Benz SLC300 (2.0L L4 Gas Turbocharged)
• 2018 Mercedes-Benz SLC300 (2.0L L4 Gas Turbocharged)
• 2019 Mercedes-Benz SLC300 (2.0L L4 Gas Turbocharged)
• 2020 Mercedes-Benz SLC300 (2.0L L4 Gas Turbocharged)

Frequently Asked Questions & Fitment Warnings

Does this fit the R172 SLC-Class?

Yes, this is a direct fit for the 2017-2020 Mercedes Benz SLC-Class equipped with the M274 2.0L engine. This unit does not fit SLC43 AMG models equipped with the 3.0L twin-turbo V6.

What critical service steps must be completed before installation?

You must flush or replace the oil supply lines and perform a complete engine oil and filter change to prevent premature bearing failure caused by residual particulate contamination.

The Mercedes Benz Precision Standard

Maintaining a European sports roadster requires rigorous mechanical precision. Engineered to meet strict factory tolerances, this turbocharger restores standard manifold pressure targets and seamless CAN bus sensor integration without triggering check engine lights or anomalous ECU limp-mode interventions.