Mercedes C350 CDI (W204) MAF Sensor Replacement — TUCKBOLD vs Bosch | OM642 Engine DIY Fix

In this video, I replace both MAF (Mass Air Flow) sensor inserts on my Mercedes C350 CDI W204 with TUCKBOLD aftermarket units — a budget alternative to the original Bosch sensor inserts. If your OM642.834 engine is idling low, running rough, or showing airflow error codes, this guide walks through the full process of replacing the individual sensor inserts only, not the complete MAF housing assemblies. You’ll see: ✅ Symptoms of a failing MAF sensor ✅ Step-by-step replacement process ✅ Live data readings using the iCarsoft MB-III ✅ Comparison of TUCKBOLD vs Bosch performance ✅ Final results after reset and road test This DIY guide should help anyone wondering if cheaper aftermarket MAF sensor inserts really work on the Mercedes OM642 engine and how to replace them at home. 🔧 Car: Mercedes-Benz C350 CDI (W204, OM642.834 Engine) 🧰 Parts: TUCKBOLD MAF Sensor Inserts Original Bosch sensor insert that can be used on my exact vehicle engine spec is: Bosch F00C2G8218 Important: This Bosch number is for the sensor insert only, not the complete MAF housing assembly, which uses a different part number. As mentioned in previous replies, it is very important to match the correct MAF sensor to your exact OM642 engine variant, as there are several different versions. 📟 Tools: iCarsoft MB-III, screwdriver, scalpel blade, alcohol cleaner, and Gorilla Glue. 👍 If this video helps you, please like, subscribe, and share to support the channel!