Product Description
The CUMMINS 3923178 OEM COMPRESSOR OUTLET ELBOW (AIR TRANSFER PIPE) is designed for 1994–2002 5.9L Cummins diesel engines equipped with HX35, HY35, and select HX40 turbochargers. This genuine Cummins component routes compressed air from the turbocharger compressor outlet to the intercooler system while maintaining proper airflow, boost pressure, and factory fitment.
Use this part when repairing damaged, cracked, corroded, or leaking charge-air piping. Proper sealing and airflow through the charge-air system are critical for maintaining engine performance and turbocharger efficiency. Always verify fitment by engine serial number and turbocharger configuration before ordering.
FEATURES
- Genuine Cummins OEM compressor outlet elbow
- Direct-fit replacement air transfer pipe component
- Designed for HX35, HY35, and select HX40 turbocharger applications
- Helps maintain proper boost pressure and airflow
- Restores factory charge-air system operation
- Ideal for repair, restoration, or engine rebuild projects
FITMENT
- 1994–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve with HX35 turbocharger
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24-Valve with HY35 turbocharger
- Select 5.9L Cummins applications equipped with HX40 turbochargers
- Select Cummins industrial and commercial applications
WHAT'S INCLUDED
- 1 Cummins 3923178 OEM Compressor Outlet Elbow (Air Transfer Pipe)
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3923178
- Cummins HX35 Turbocharger Components
- Cummins HY35 Turbocharger Components
- Cummins Charge Air Cooler Boots and Clamps
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3923178
- Part Type: Compressor Outlet Elbow / Air Transfer Pipe
- Engine Compatibility: 5.9L Cummins
- Turbo Compatibility: HX35, HY35, Select HX40
- Fitment Years: 1994–2002
- Vehicle Application: Dodge Ram 2500 / 3500
- Condition: New OEM Cummins
- Installation Type: Direct Replacement
FAQ
Will this part fit my truck?
This compressor outlet elbow fits many 1994–2002 5.9L Cummins applications equipped with HX35, HY35, or select HX40 turbochargers. Always verify fitment by engine serial number and turbocharger model before ordering.
What does the compressor outlet elbow do?
This component directs compressed air from the turbocharger outlet into the charge-air system on its way to the intercooler and intake manifold.
Is this a genuine Cummins part?
Yes. Cummins 3923178 is a genuine OEM Cummins compressor outlet elbow manufactured to factory specifications.
What are the signs of a damaged outlet elbow?
Common symptoms include boost leaks, reduced engine performance, excessive turbo lag, loss of boost pressure, and visible cracks or damage to the pipe.
What is included?
This listing includes one Cummins 3923178 OEM compressor outlet elbow.
Do I need any related parts?
Inspect charge-air boots, clamps, intercooler piping, intake components, and turbocharger connections during installation and replace worn parts as necessary.
