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Home > Chevy > Silverado 2500 > Knock Sensor > 2001-2007 Chevy Silverado 2500 HD Knock Sensor (AC DELCO 213-3521) for V8 6.0L (8th Vin Digit U)

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2001 - 2007 Chevy Silverado 2500 HD Knock Sensor (AC DELCO 213-3521) for V8 6.0L (8th Vin Digit U)


In Stock (Ships same day for orders placed by 3 PM ET)

List Price:$73.52

Our Price: $60.45
 (You Save $13.07)

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Part Number: 1AACD00047

Welcome Message from 1A Auto


This AC DELCO knock or detonation sensor is a new part. It is the same piece that you would receive if you purchased it from your local GM dealer.

A knock sensor is like a very small electric microphone that is placed on the engine. It listens for pre ignition knocks and then sends a signal to the ECM. The ECM then will make adjustments to the engines timing. If the knock sensor fails, it possibly can cause serious engine damage as continuous pre ignition can cause a fracture in the pistons!

This knock sensor features the following specifications:

  • Brand New AC Delco part
  • Replaces dealer part number: 12589867, 213-3521
  • Built to strict quality control standards
  • Direct replacement
  • 100% factory tested
  • Mounts in either the engine block, cylinder head, or intake manifold
  • (1) Wire Style

These are electrical parts and are all tested before they leave our manufacturer. This electrical item is not returnable; it is only eligible for exchange

1 Year Warranty

This item is backed by a 1 Year Manufacturers Warranty. In the event this item should fail during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

Part Brand: AC DELCO # 213-3521

This part replaces:
  • OE #: 12589867

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