This Garrett GT2971R-84T CHRA is a ball bearing center section built for enthusiasts who demand a responsive, tunable core for their four-cylinder performance build. Featuring an 84 trim turbine wheel paired with a 56 trim compressor wheel, it’s engineered to deliver strong mid-range boost response for serious street and track applications. If you’re rebuilding or upgrading a GT3071R-WG based turbo system, this is the core built to Garrett’s exacting standards.

Specifications

• Compressor Wheel Size: 71mm
• Compressor Wheel Trim: 56 trim
• Turbine Wheel Size: 56.5mm
• Turbine Wheel Trim: 84 trim
• Bearing Type: Ball bearing
• Garrett P/N: GT2971R-84T
• Also Known As: GT3071R-WG

Performance & Application

This CHRA is designed for tuned four-cylinder engines seeking responsive mid-range boost delivery. The ball bearing center section combined with the 84 trim turbine wheel configuration supports quick spool characteristics well-suited to street-driven and performance-tuned builds. This core is intended for rebuilds or upgrades within compatible GT3071R-WG turbocharger systems.

Compatibility & Fitment

• Compatible with turbo P/N 700382-5003s
• Compatible with turbo P/N 700177-5003s

Frequently Asked Questions

Is this a ball bearing or journal bearing CHRA?

This CHRA features a ball bearing center section.

What compressor wheel does this CHRA use?

It uses a 71mm compressor wheel with a 56 trim.

What turbine wheel does this CHRA use?

It features an 84 trim turbine wheel measuring 56.5mm.

What does GT3071R-WG refer to?

GT3071R-WG is the alternate name associated with this GT2971R-84T CHRA.

What turbo assemblies is this CHRA compatible with?

This CHRA is compatible with turbo P/N’s 700382-5003s and 700177-5003s.

For builders seeking a genuine Garrett ball bearing core matched precisely to the GT3071R-WG platform, the GT2971R-84T delivers the exact specification needed for a reliable, responsive rebuild.