TB28 Turbocharger Beefed-Up Fitment For Isuzu NPR NQR 4.8L And Chevrolet W3500 W4500 W5500 1999-2003 GMC 4.8L Trucks, OE 700716-1 To 700716-3, Basic VL Series Performance Upgrade

TB28 Turbo Upgrade-single unit for Isuzu NPR/NQR and GM
✔️ OEM-style turbo with iron turbine housing and forged aluminum wheel

The TB28 turbocharger is a direct OEM replacement designed for 4.8L powerplants in Chevrolet W3500 W4500 Tiltmaster W4S042 (1999-2003), GMC W3500 W4500 W5500 Forward 4.8L (1999-2003), and Isuzu NPR NQR Base 4.8L (1997-2004). OE part numbers include 700716-1, 700716-2, and 700716-3, providing a seamless upgrade with no modifications required.

✅ Direct OEM replacement for 4.8L engines
✅ Turbine housing: ductile iron, rated to 1292°F
✅ Alloy turbine wheel with high oxidation stability for 1652°F operation
✅ Aluminum compressor wheel forged for durability and boost response

💡 What is a TB28 turbo upgrade used for on 4.8L Isuzu NPR/NQR and GM trucks?

This handy upgrade boosts boost delivery and engine efficiency for 4.8L applications.

• Restores factory performance with a modern OEM-compatible design
• Improves throttle response and sustained power for daily driving and work duty
• Is a direct OEM replacement, minimizing downtime during installation

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