Billet Turbo For Isuzu D-Max UCR40 UCS40, Mazda BT50 TFR40 TFS40 4JJ3 3.0L RHS4V

Billet Upgrade Turbo Charger

***Please check turbo numbers and OE numbers before ordering***

Our advanced assembly techniques ensure seamless integration of bearings, impellers, and rotor assemblies, forming a powerhouse of efficiency. Every turbocharger is rigorously tested under full-speed simulations to guarantee optimal balance and peak performance. 

Vehicle Fitment For:

• Isuzu D-Max TFR40 (07/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Isuzu D-Max TFR40 (07/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Isuzu D-Max Spacecab TFR40 (07/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Isuzu D-Max TFS40 (07/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Isuzu D-Max Spacecab TFS40 (07/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Isuzu MU-X UC40 (07/2021–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Isuzu MU-X UC40 (07/2021–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
• Mazda BT-50 B30 (08/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Mazda BT-50 B30 (08/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Mazda BT-50 B30 (08/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Mazda BT-50 B30 (08/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Mazda BT-50 B30 (08/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)
  
• Mazda BT-50 B30 (08/2020–2026) 3.0 litre 4JJ3-TCX I4 16v DOHC I/C Turbo CRD (140kW)

Sizing and Specifications 

• Turbo Model: RHS4V
• Turbo Number: 8984808191

OE Equivalent Numbers

• 8984808191
  

What's Included  

• Turbo Charger Assembly

What Is a Billet Upgrade?

A billet upgrade refers to the use of high-quality, machined billet components in the construction of parts, such as turbochargers. The term "billet" means the part is made from a single block of material (usually aluminum or steel) that is machined down to the final shape, as opposed to being cast or forged.

Key Benefits of a Billet Upgrade:

Strength and Durability:

Billet components are stronger than cast parts because they have a denser, more uniform grain structure. This makes them better suited for high-performance and heavy-duty applications.

Precision and Customization:

CNC machining used for billet parts allows for more precise designs and better airflow optimization, enhancing turbo performance.

Improved Heat Resistance:

Billet materials often handle heat and pressure more effectively than cast alternatives, which is critical for turbochargers operating at high RPMs and extreme conditions.

What Does the Turbo Model Number Mean?

RHS4V Turbocharger

The RHS4V is a large-frame performance turbocharger developed by IHI (Ishikawajima-Harima Heavy Industries), part of their RH-series lineup. This model is built for high-horsepower diesel and petrol applications, offering robust performance, high-flow capability, and excellent durability under extreme conditions. The RHS4V is typically found in heavy-duty and motorsport applications where rapid spool and reliable boost at high RPMs are critical.

Breakdown:

1. RH:

   • Stands for IHI’s RH-series, a long-standing line of turbochargers designed for medium to heavy-duty engines.

   • Known for rugged construction, high-pressure tolerance, and suitability in both OEM and racing environments.

2. S4:

   • The “S4” indicates the frame size within the RH-series, with the "S" typically used for larger turbines.

   • This sizing suggests support for engine displacements ranging from 3.0L up to 6.0L, depending on the setup.

   • High airflow and power capability — often rated for 350–500+ horsepower with supporting modifications.

3. V:

   • Indicates Variable Geometry Turbo (VGT/VNT) capability.

   • The VGT mechanism enables precise boost control and faster spool across a wide RPM range, even with a large turbine housing.

   • Helps reduce turbo lag and enhances driveability in both diesel and performance petrol setups.

Applications:

The RHS4V turbocharger is typically found in:

• Performance Diesel Platforms:

  • Suited for high-performance diesel trucks, such as modified Isuzu 4JJ1, Toyota 1KD/1VD, or Ford Ranger 3.2L builds.

  • Also seen in off-road and competition diesels requiring large boost volumes and VGT response.

• Motorsport Applications:

  • Used in petrol-based racing platforms with built motors (e.g., 6-cylinder drag/rally cars).

  • Especially relevant for time attack, drift, and diesel drag formats where top-end flow is critical.

• Heavy-Duty Engines (OEM/Industrial):

  • In some OEM applications, it appears in commercial-grade diesel engines used in trucks or marine engines with electronic boost control.

Key Features:

• Variable Geometry Technology (VGT):

  • Enhances boost response and low-end torque without compromising high-end flow.

  • Essential for large displacement engines operating under wide RPM ranges.

• Large Frame Housing:

  • Allows for massive exhaust flow capacity, making it ideal for big boost and high EGT environments.

• Robust Construction:

  • Built with nickel-based turbine materials and steel bearing housings, making it resistant to thermal stress in sustained high-performance use.

• Upgradable Core Options:

  • Popular with tuners who swap to billet compressor wheels, upgraded thrust bearings, and ported housings for increased boost and efficiency.

• Standalone or Twin Setup:

  • Can be used as a single turbo on large engines or as the high-pressure unit in compound/twin setups.