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MRC Protier Industries is an aftermarket manufacturer of steering and suspension components, including power steering pumps, steering gears, drag links, tie rod ends, and related linkage parts. Its parts are commonly found online and in independent repair shops as lower-cost alternatives to OEM units. For safety-critical steering repairs, verify that the specific MRC Protier part matches your vehicle's original specifications and, if possible, look for independent quality certifications or customer reviews. When dealing with diagnostic trouble codes such as C0450, C0455, or C0460, note that these DTCs typically point to steering angle sensor, yaw rate sensor, or wheel speed sensor circuit issues; replacing mechanical steering linkage may not clear them unless the underlying electrical or sensor problem is addressed. For 2026 heavy-duty trucks, confirm whether OEM drag links or aftermarket equivalents are recommended by the manufacturer, especially for fleet or commercial use. In summary, MRC Protier parts can be a budget-conscious option, but you should validate fitment, quality, and the root cause of any steering-related DTC before installation.