Posted on 11/28/2025
Choosing parts is not just about the cheapest box on the counter. The goal is the part that fits correctly, performs like the original, and lasts long enough that you do not buy the job twice. Use this guide to balance cost, quality, and peace of mind. Start With Fitment and Compliance A good choice begins with parts that match your vehicle by VIN. Fitment covers connector style, mounting points, and clearances. Compliance means the part meets the specifications the vehicle was designed around, from filtration ratings and friction codes to electrical output and software compatibility. If a component does not meet those specs, it can trigger fault codes, shorten service life, or void the warranty. OEM vs Aftermarket vs Tier-1 “OEM” parts are what the vehicle maker installed. “Tier-1” parts come from the same suppliers that build many OEM components, often to the same print. “Aftermarket” spans everything from pre ... read more