OEM Knowledge Base

Genuine Parts.
Real Expertise.

How-to guides, part number references, and OEM advice for BMW, Mercedes-Benz, Audi, VW, Porsche, Volvo, and Toyota owners.

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How-To Guides Brand Guides OEM Guides Parts Guides
Mercedes-Benz Parts Guide

Mercedes W205 C-Class Wiper Blades: Genuine OEM Guide

Correct OEM wiper blade sizes and part numbers for Mercedes-Benz W205 C-Class. Flat blade vs conventional, replacement guide.

Audi Parts Guide

Audi A4 B9 OEM Brake Pads: Part Numbers and Guide

Find the correct genuine OEM brake pads for Audi A4 B9 (2015–2023). Includes front and rear part numbers, sensor guide, and replacement tips.

Toyota Parts Guide

Toyota OEM Parts vs Denso: Understanding the Difference

Toyota and Denso have a unique relationship. Here is what it means for parts sourcing, quality, and finding genuine Toyota OEM components.

BMW Parts Guide

BMW OEM Brake Pads: Why Genuine Matters

Why genuine OEM brake pads are the only sensible choice for BMW. Covers pad compounds, brake judder, common mistakes, and part numbers.

BMW Parts Guide

BMW Spark Plugs: OEM vs Aftermarket — What You Need to Know

The definitive guide to BMW spark plug specifications. Why iridium OEM plugs matter, heat ranges, part numbers, and replacement intervals.

Mercedes-Benz Parts Guide

Mercedes-Benz Air Filter: Genuine OEM vs Aftermarket

Why the air filter matters more on a Mercedes than you think. OEM vs aftermarket filtration comparison, part numbers, and replacement guide.