The (RHC6) is a turbocharger. This is a new direct-fit replacement built to OEM specifications and backed by PT Turbo’s 12-month unlimited-mile warranty.

Give your 1996–2000 6.5L GM truck the power and efficiency it deserves with this brand-new GM-8/GM-5 RHC6 turbocharger from PTTURBO.COM.

This high-quality aftermarket replacement turbo is a direct bolt-on fit for all 6.5L diesel GM trucks from model years 1996 through 2000. Built with a rugged cast iron turbine housing and a lightweight aluminum compressor housing, it’s designed for long-term reliability and performance. Perfect for replacing a failing turbo or upgrading to restore factory boost levels.

Product Features:

• Brand-new, never remanufactured
• Model: GM-8 / GM-5 (RHC6)
• Construction: Cast Iron Turbine / Aluminum Compressor Housing
• Fitment: Direct replacement — no modifications needed
• Includes new wastegate actuator and installation gaskets
• Manufacturer Warranty: 1 Year

Vehicle Compatibility:

• 1996–2000 GM Trucks with 6.5L Diesel Engines
• Direct replacement for factory-installed GM-8 or GM-5 turbos

OE / OEM Part Numbers:

• 12533738
• 12556124
• 14030027-101 / -102 / -103

Why Choose This Turbo?

• Reliable aftermarket quality from PTTURBO.COM
• Simple installation with pre-installed actuator and gaskets
• Restores lost power and torque from worn-out factory turbos
• Great value — no core charge, no reman parts

Important Fitment Note:
Always confirm fitment by matching your original part number or consulting your VIN prior to purchase. This turbo is a direct fit for all 1996–2000 GM 6.5L diesel applications using GM-8 or GM-5 units.

California buyers: Sales tax applies
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About This GM-8 / GM-5 RHC6 Turbocharger — 6.5L GM Diesel Trucks

The GM-8 and GM-5 designations — along with the RHC6 platform — identify the turbochargers used on 6.5L GM diesel trucks from 1996 through 2000. This includes the C/K 2500 and 3500 series, Suburban, and medium-duty GM platforms using the naturally aspirated 6.5L upgraded with turbocharging to improve power and driveability. These trucks represent the final evolution of the GM 6.5L diesel before the platform was retired in favor of the Duramax, and finding correct replacement turbos has become increasingly challenging as the parts supply thins.

This replacement RHC6 turbocharger is a correct fitment for 1996–2000 6.5L GM diesel applications using the GM-8 or GM-5 configuration. Confirm your existing part number or the GM designation on your original unit before ordering.

Common Failure Modes on the GM 6.5L Turbo

• Bearing failure from oil contamination or low oil pressure — the 6.5L oil system is sensitive to wear
• Compressor seal failure leading to oil in the intake and white smoke
• Turbine wheel damage from high-EGT operation or debris ingestion
• Shaft play — detectable with the turbo removed — indicating full bearing replacement needed

PT Turbo — 6.5L Diesel Turbo Source

PT Turbo has been sourcing and rebuilding turbochargers for the GM 6.5L diesel since the platform was in production. Our San Bernardino, CA facility carries hard-to-find 6.5L turbo components and can rebuild your existing core if a direct replacement is not available. Contact us with your GM designation or part number and we will find the right solution for your truck.