Every part is inspected and tested before shipping. For units marked as New Takeoff, these are low-hour CHRAs that have been removed from donor turbos.

What Is a CHRA Cartridge and Why Does It Matter for CAT Engines?

A CHRA (Center Housing Rotating Assembly) is the core of a turbocharger. It contains the turbine wheel, compressor wheel, bearing system, and shaft—the key rotating elements responsible for generating boost.

CAT diesel engines rely heavily on turbocharging for performance and fuel efficiency. A malfunctioning CHRA leads to low power output, smoke, turbo noise, or even engine failure.

Replacing just the CHRA, rather than the entire turbo, offers a cost-effective and time-saving solution for engine rebuilds, repairs, or maintenance.

Which Caterpillar Engines Do These CHRAs Fit?

Goldfarb supports CHRA cartridge replacements for a wide range of CAT diesel engines:

• CAT 3406, 3406B, 3306

• CAT 3116, 3126

• CAT D339B, D379B

• CAT S4D, S3B, TW8108

• Turbo-equipped marine and industrial CAT variants

Supported Equipment:

• Earth movers (928 Loaders)

• Industrial generators

• Agricultural tractors

• On-road diesel trucks

• Marine vessels and tugboats

Each CHRA listing includes detailed compatibility data, including OEM cross-references.

Types of CHRA Cartridges Available for CAT Applications

We supply three core types of CHRA assemblies:

1. New OEM or OEM-equivalent

• Brand-new from the factory or aftermarket match

• Includes balanced turbine and compressor wheels

• Ready to install, zero-hour use

2. Rebuilt Units

• Restored with new internals (bearings, seals, shafts)

• Rotor assemblies are high-speed, balanced

• Validated against factory performance standards

3. Used / Takeoff CHRAs

• Pulled from low-hour or test-run turbos

• Fully inspected for shaft play, bearing wear, and wheel integrity

• Ideal for budget-conscious repairs

How to Identify the Correct CAT CHRA Cartridge

To ensure you select the right CHRA, confirm the following:

• OEM Part Number (e.g., 0R5770NT, 499516)

• Turbocharger Model (e.g. S4D, GT50, TW8108)

• Engine Model (e.g,. CAT 3406B, 928 Loader)

• Serial or Casting Number on the old turbo

• Application Type (industrial, marine, construction)

Goldfarb's support team can help verify CHRA fitment using your VIN, engine serial number, or existing turbo part number.

Why Choose a CHRA Instead of a Full Turbo?

Replacing only the CHRA (not the entire turbo) offers:

• Lower cost – Save up to 60% over full replacement

• Faster repair – Direct replacement, no need to re-plumb the exhaust/intake

• Less downtime – In-stock units ship the same day

• Sustainable repair – Reuse your turbine and compressor housings

CHRA swaps are commonly used in field maintenance and fleet service repairs.

What Makes Goldfarb the Best Source for CAT CHRA Cartridges?

Goldfarb & Associates is one of the most trusted U.S. suppliers of turbocharger CHRA units for diesel applications. Here's what sets us apart:

• Over 20 years of experience in diesel turbo systems

• Huge inventory of in-stock CHRA cartridges ready to ship

• Expert verification of part fitment and application

• Certified rebuilds using OEM-grade components

• Free U.S. shipping on orders over $50

• Live chat technical support is available weekdays

We source and test every CHRA for dimensional accuracy, wheel balance, bearing health, and seal condition.

Frequently Asked Questions

Do you rebuild CAT CHRA cartridges in-house?

Yes. All rebuilt units are professionally restored to OEM standards with new bearings, shafts, and seals.

Can I replace just the CHRA if my turbo is damaged?

If your turbine and compressor housings are intact, replacing the CHRA is the most efficient method of repair.

How do I know my CHRA is bad?

Common signs include excessive shaft play, oil in the intake, unusual whistling, or power loss under load.

What tools are needed to replace a CHRA?

CHRA installation typically requires basic hand tools and precise torque specs. It's recommended for experienced technicians.

Do you ship internationally?

Yes. We offer global shipping with export documentation and secure packaging.

Order Your CAT CHRA Cartridge from Goldfarb Today

If you operate or service Caterpillar diesel engines, a failed turbo doesn't have to mean a full replacement. Goldfarb & Associates has tested OEM-compatible CHRA cartridges in stock, ready to restore your CAT turbocharger's performance.

Whether you're servicing a 3406B in an excavator or replacing a turbo on a 928 Loader, we've got the exact center housing assembly you need. Shop online, visit our Rockville, MD warehouse, or chat with a turbo expert today.