CHRA-GT4508R with Big (Standard Size GT45 Style) Backplate

The Garrett CHRA-GT4508R with Big (Standard Size GT45 Style) Backplate is a purpose-built center housing rotating assembly engineered for enthusiasts and shops pushing into serious high-boost, high-flow turbocharger territory. Built on Garrett’s proven ball bearing platform, this CHRA is the core replacement or rebuild solution for anyone running a GT45R-based setup who demands consistent, reliable performance under sustained load. It’s the right choice for builders who already understand aggressive turbo sizing and need a genuine Garrett core to match.

Specifications

• Model: GT4508R
• Bearing Type: Ball Bearing
• Backplate: Big (Standard Size GT45 Style) Backplate
• Garrett P/N: 451888-5028S
• Also Known As: GT45R
• Alternate P/N: 451888-5028
• Alternate P/N: 451888-0028S
• Alternate P/N: 451888-0028

Performance & Application

This CHRA is designed for demanding applications that call for aggressive turbo sizing and substantial boost capacity. The ball bearing construction is engineered for durability, giving builders confidence when running high-output setups that rely on responsive spool characteristics rather than a laggy, oversized frame. It’s a core suited to high-horsepower builds where the GT45R designation is already the chosen platform, whether for a fresh build or a rebuild of an existing unit.

Frequently Asked Questions

What does GT45R refer to?

GT45R is the alias commonly used to refer to the Garrett GT4508R turbocharger.

Is this a ball bearing or journal bearing CHRA?

This is a ball bearing CHRA, built for durability in demanding, high-boost applications.

What backplate comes with this CHRA?

This CHRA integrates the Big (Standard Size GT45 Style) Backplate.

What Garrett part numbers apply to this CHRA?

Applicable Garrett part numbers for this CHRA include 451888-5028S, 451888-5028, 451888-0028S, and 451888-0028.

For builders committed to the GT45R platform, this genuine Garrett ball bearing CHRA with its standard GT45-style backplate delivers the durability and boost capacity demanded by serious, high-horsepower applications.