Mack MP8 Stage 1 Performance Turbocharger - Premium VGT Upgrade

2008 - 2019 MP8 Engines

Engineered Performance Meets OEM Reliability

Our Stage 1 Billet Wheel Turbo Charger is an OEM replacement for trucks making from 400 to 625 horsepower. This turbo features improved torque and fuel economy as well as lower EGT’s(Exhaust Gas Temperatures). With a quicker spool up and better craftsmanship than OEM turbos — the Stage 1 turbo is the perfect OEM replacement and is the best turbo charger for class 8 vehicles on the road today. NEW CALIBRATED ACTUATOR INCLUDED ! The factory actuator is prone to failure, and unfortunately when it fails, they are often on back order at the dealership when you need one. This actuator is a factory replacement that comes pre-calibrated! It also includes a 1 year warranty. Key Features VGT Turbo With Improvements Over Stock Reduced Turbo Lag for Better Throttle Response New Electronic Actuator Is Included – Bolt & Go! No Calibration Required! Cobalt VGT cage and ring 64mm Billet Aluminum Compressor Wheel Highest Grade Compressor Wheel Possible To Prevent Chipping & Burst Adds 20 to 50 Horsepower High Quality Copper Journal Bearings Upgraded Diffuser Plates Faster Spinning Turbo Increases Horsepower & Torque Better Airflow Reduces Engine Temps & Improves Reliability Increased Fuel Economy Triple Balanced – up to 180,000 RPM Factory Size Exhaust Housing Bolts Up To Factory Locations No Core Charge Better Than a Factory Replacement & Costs Less! Unlimited Mileage 1 Year

Technical Specifications

Core Components:

• Stage 1 Billet Wheel VGT Turbocharger with integrated electronic actuator
• 64mm Billet Aluminum Compressor Wheel - CNC-machined from aerospace-grade aluminum for maximum strength and heat dissipation
• Cobalt VGT Cage and Ring Assembly - Delivers precise boost control across the entire RPM range
• Electronic Actuator - Factory-calibrated for seamless integration with OEM engine management systems

Engine Compatibility:

• 2008-2019 Mack MP8 Engines 

Power Range:

• Supports 400-625 Horsepower Applications
• Ideal for stock to moderately tuned engines
• Scalable performance for various duty cycles

Construction Quality:

• OEM Replacement Quality Standards
• Direct bolt-on installation - no modifications required
• Meets or exceeds original equipment specifications
• Rigorous quality control and testing protocols

Performance Benefits

Reduced Turbo Lag

The advanced billet compressor wheel design and optimized VGT geometry virtually eliminate turbo lag, delivering power exactly when you need it.

Whether you're merging onto highways, climbing steep grades, or accelerating from a stop, the Big Rig 56500 responds instantly to throttle input.

Your truck will feel more responsive and easier to drive in every situation.

Superior Throttle Response

The precision-engineered cobalt VGT cage and ring assembly provides infinitely variable boost control, allowing the turbocharger to adapt to changing load conditions in real-time.

You'll experience crisp, immediate throttle response that gives you better control and improved drivability in traffic.

Plus, you'll have more confidence when passing or navigating challenging terrain.

Faster Spool-Up

The lightweight 64mm billet aluminum compressor wheel reduces rotational mass while maintaining structural integrity, letting the turbocharger reach optimal boost pressure significantly faster than stock units.

This quicker spool-up delivers stronger acceleration from lower RPMs, reduces the need for downshifting, and improves fuel economy during normal driving.

Enhanced Airflow and Cooling

The aerodynamically optimized compressor wheel moves significantly more air than stock turbochargers, improving cylinder filling and combustion efficiency.

This increased airflow directly lowers exhaust gas temperatures (EGTs), reduces engine operating temperatures, and decreases thermal stress on critical engine components.

Cooler running temperatures extend engine life, reduce maintenance costs, and improve reliability—especially important for high-mileage commercial applications.

Improved Engine Reliability

By reducing operating temperatures and providing more efficient combustion, the Big Rig 56500 protects your engine investment.

Lower EGTs mean less stress on pistons, rings, valves, and head gaskets. More efficient airflow reduces the workload on your cooling system.

The result is an engine that runs cleaner, cooler, and more efficiently, with the potential for significantly extended service intervals and reduced long-term maintenance costs.

 

Replacement for OEM part # 85151095

Cross reference: 831124, 3784777, 21238245, 85141060, 2838447, 3784779, 21364706, 85141063, 2838448, 3791465, 21366000, 85141857, 2841956, 3791466, 21468131, 85151094, 2841961, 3791486, 21559604, 222880308, 3767704, 3791487, 21559607, 1700321618, 3767706, 4031154, 21559608, 1700323564, 3767710, 4031203, 22001084, 1700323565, 3767711, 4627060, 22001088, 170-032-1618, 3767715, 4628776, 22001089, 170-032-3564, 3773446, 5328831, 22215685, 170-032-3565, 3773449, 5328832, 22215686, 3791466H, 3775775, 5353343, 22880309, 3791466NX, 3775776 5353344, 85003963, 3791466RX, 3779285, 5355474, 85020014, 5355484RV, 3779286, 5355475, 85021417, 5355484RX, 3779287, 5355484, 85021418, 5355485RV, 3784770, 5355485, 85124588, 549974100H, 3784773, 5499739, 85128133, 549974100HX, 3784774, 5499741, 85136184, 5499741H, P22880308, 5499741HX, 85151095, 85151094, 85141064, 85141060, 85151094, 85020018, 85026018, 85020014, 85021417, 22215689, 22215685, 22880308, 85141058, 85151105