Review on 🛎️ AC DELCO 213-3521 Knock Sensor Pair: Quality for Chevy GMC Cadillac Pontiac Pickup V8 by Steve Jones

Knock Sensors are 100% OEM and come with the new blue GM logo. The new branding/packaging is designed to help the end user identify their OEM. Each unit is wrapped in bubble wrap and placed in a plastic sleeve. It's easy to identify genuine OEM, not old parts sitting on the shelf. The cost is higher, but once you've removed the intake manifold you'll be glad to have better replacement parts so you don't have to do it twice. More than one how-to video on YouTube has talked about swapping knock sensors twice because a non-genuine pair failed. After installation, all error codes are gone. Big seller for a pair of AC DELCO 213-3521 knock sensors for a 2003 Chevy 6.0. 177,000km.