Air and Fuel Superchargers, Turbochargers and Components

RENNtech

Stage I Turbo Upgrade for M256 3.0L I6 Turbo

$5,780.00

SKU: PKG.09.256.2021

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The RENNtech Stage I Turbo Upgrade is a performance enhancement for the M256 3.0L I6 Turbo engine. It features a strengthened turbo cartridge shaft, larger intake and exhaust impellers, and upgraded bearings to handle increased power output.
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The RENNtech Stage I Turbo Upgrade, designed for the M256 3.0L I6 Turbo engine, enhances performance by incorporating a strengthened turbo cartridge shaft, larger intake and exhaust impellers, and upgraded bearings. This robust construction ensures reliability even when increasing the engine's power output, addressing potential OEM turbo failures. This performance package includes both the Turbo Upgrade and an ECU Upgrade. It offers significant gains of up to +69 HP and +50 LB-FT, resulting in a maximum output of 505 HP and 460 LB-FT at the crank. Key features of this upgrade include larger, lightweight forged billet wheels for reduced rolling resistance, precision CNC-machined impeller and turbine housings, and a fine-balanced cartridge assembly for optimal performance. The product requires 93+ Octane gasoline to reach its maximum power potential. Additional components such as RENNtech downpipes, BOV adapters, and high-flow air filters are necessary to achieve the stated peak power figures. This RENNtech Stage I Turbo Upgrade is compatible with a range of AMG 53 models, including the W213 E 53 AMG Sedan, S213 E 53 AMG Wagon, C238 E 53 AMG Coupe, C257 CLS 53 AMG, X290 GT 53 AMG, C167 GLE 53 AMG Coupe, and V167 GLE 53 AMG SUV, all from model year 2018 and newer. A core charge applies, which is credited upon the return of the OEM turbo core.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandRENNtech
Part NumberPKG.09.256.2021
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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