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Motor & Trans Mount Set 2PCS for 05-10 Chrysler 300 / Charger Magnum 2.7L / 3.5L - 2026 Technical Review and DTC Guide

by flippancy 17 Aug 2026

Overview

The Motor & Trans Mount Set 2PCS is an aftermarket replacement for the original powertrain mounts on 2005-2010 Chrysler 300, Dodge Charger, and Dodge Magnum models equipped with the 2.7L EER V6 or 3.5L EGG V6 engine. It addresses common symptoms such as cracked hydro-elastomeric isolators, engine sag, excessive vibration, clunking during acceleration, and transmission misalignment. This set is manufactured in an ISO 9001-certified facility and validated against SAE J-674 engine mount test cycles, SAE J1211 fatigue simulation, and ASTM D2000 rubber classification.

2026 SAE Compliance and CAN-Bus Compatibility

These mounts are purely mechanical components and contain no sensors, solenoids, or electronic modules. They do not interact with CAN-bus 2.0 or CAN-bus 3.0 architectures, OBD-II monitors, PCM/ECU logic, or TCM logic. As a result, they will not cause false diagnostic trouble codes and do not interfere with 2026 emissions testing, catalyst monitors, or drivetrain control systems. The elastomer compound is selected to maintain original durometer and damping characteristics across normal operating temperatures from -40F to 300F.

Fitment and Cross-Reference

This two-piece mount set is designed for the 2005-2010 Chrysler 300, Dodge Charger, and Dodge Magnum LX platform with the 2.7L V6 or 3.5L V6 engine. It replaces the worn motor mount and transmission mount to restore factory powertrain alignment, correct driveline angles, and reduce cabin NVH. It is a direct-fit replacement using factory attachment points and torque specifications.

Signs of Failure and DTC Mapping

Worn motor and transmission mounts can indirectly trigger several diagnostic trouble codes. Common associated codes include P0300-P0306 for random or cylinder-specific misfires caused by excessive powertrain movement, P0730-P0735 for incorrect gear ratios caused by transmission misalignment, P0700-P0799 for transmission control system faults, and P0500-P0503 for vehicle speed sensor circuit issues. These mounts should be inspected when those codes appear alongside physical symptoms such as clunking, shaking, or visible mount collapse.

Installation Notes and Service Life

Installation should be completed with the engine and transmission supported so that fasteners can be torqued with the mounts under normal ride height load. Use new fasteners if specified by the vehicle manufacturer. After installation, verify that the engine sits level, the transmission shifts without binding, and no driveline vibration remains. The expected service life under normal driving conditions is approximately 80,000 to 120,000 miles, though severe loads, off-road use, or fluid contamination can reduce that interval.

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