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Chassis Components› Bushings and Mounts

K-MAC Solid

Solid Subframe Bush Kit

$895.00 $890.00 Save $5.00

SKU: 503028 Q

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The kit includes four main subframe bushes and an extraction tool to simplify installation.
Show original supplier description
The K-MAC Mercedes rear main subframe bushes (part number 503028-Q) offer a significant upgrade over the factory rubber components, addressing common issues such as rear-end flex, twitching, wheel tramp, and premature crossmember fatigue. Designed as a complete 1-piece replacement, these urethane bushings aim to resolve rattles and squeaks while improving traction and acceleration. Constructed with K-MAC's proven technology, these bushes feature maximum diameter, lightweight alloy casings with bonded elastomer for superior load containment, and nickel-chromed steel inners for durability. Unlike less comprehensive solutions that might only use wedges or require partial filling of original voids, this kit provides a full replacement. This allows for on-car replacement, simplifying the process for DIY enthusiasts and professional mechanics alike. This set is specifically designed for a wide range of Mercedes-Benz models, including the W204/X series (C180-450, C63 AMG, Black Series from 2007-2014), W212/S series (E200-550, E63, 65/S AMG, 4MATIC from 2009-2016), C207 series (E200-500, E63, 65/S AMG, 4MATIC from 2009-2017), and C218 CLS series (350-550, CLS 63, 65 AMG, 4MATIC from 2012-2018).

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

BrandK-MAC Solid
Part Number503028 Q
CategoryChassis Components

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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