Air Manifold | Freightliner Cascadia | Freightliner 12-21425-002 / 12-21425-001 | FleetRun FR-BRKE384


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6 Month / 50,000 Mile Warranty

Part Number

  • FleetRun: FR-BRKE384

Cross Reference Part Number

  • Freightliner / Alliance: 12-21425-002 / 12-21425-001 / 1221425001 / 1221425002
  • Automann: 170.1015 / 170.1015OE
  • Misc. Industry Part Number: TKL01015


  • Outside Diagram: 4 - 1/8 in. NPT Threaded Sensor Connections, 5 - 1/4 in. PLC Air Hose Connections, 4 - 3/8 in. PLC Air Hose Connections, 3 - 1/8 in. PLC Air Hose Connections
  • Inside Diagram: 4 - 1/4 in. PLC Air Hose Connections, 5 - 3/8 in. PLC Air Hose Connections

Please note: this is an aftermarket part, the use of other manufacturer's names, part numbers or trademarks is for informational purposes only.

Please verify OEM part numbers before purchasing, FleetRun assumes no liability related to product use and fitment.

Freightliner Cascadia Air Manifold

Looking for a high-quality air manifold for your Freightliner Cascadia? Look no further than FleetRun's FR-BRKE384 air manifold! Designed to meet or exceed OEM standards, this manifold is specifically built to fit your 2008-2018 Freightliner Cascadia.

With a range of passages with brass fittings and durable housing material, this air manifold is built to tie together your truck's various air, brake, and ABS systems. Whether you're replacing a worn-out OEM air manifold or need a reliable part for a repair, the FR-BRKE384 delivers the value and performance you need.

At FleetRun, we pride ourselves on providing OEM quality parts at a fair price and bringing value to the customer. We understand that you need reliable parts to keep your truck on the road, and we're here to help. If you would like to know more information about the FR-BRKE384 or any of our other products or would like to check stock, please don't hesitate to contact our customer service team. You can reach us by email or through our website; our team of experts is always ready to help.

So why wait? Purchase your FR-BRKE384 Cascadia air manifold today and experience the quality and value that FleetRun is known for!

  • For other information such as tips and tricks or troubleshooting from technicians and shops visit our Shop Talk page from our menu
  • 2008-2018 Freightliner Cascadia

How to find air leaks on my Freightliner Cascadia by myself?

Read our blog about doing an air leak inspection by yourself: 

How to fix an air leak on a semi truck? / How do I find an air leak in my truck?