Kinugawa TD04L-15T Turbocharger Upgrade for Isuzu 4JG2T / 4JG2 / 4JH1

The Kinugawa TD04L-15T Turbocharger Upgrade is designed for Isuzu diesel engines including 4JG2T, 4JG2 and 4JH1, replacing many factory IHI RHF5, RHF4 and RHB5-style turbocharger applications.

This turbo is aimed at owners who want stronger torque, improved mid-range performance and better breathing than a tired factory turbo, while retaining a practical bolt-up layout for compatible Isuzu diesel engines.

With a TD04L-15T CHRA, 6cm turbine housing, oil and water cooling, journal bearing construction and supplied oil/water line kits, this is a complete turbocharger package for performance rebuilds, replacement upgrades and off-road diesel builds.

Application: Isuzu 4JG2T / 4JG2 / 4JH1 diesel engines

Replacement Turbo Style: IHI RHF5 / RHF4 / RHB5 style applications with compatible 4-bolt outlet flange

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Key Features of the Kinugawa TD04L-15T Turbo

• TD04L-15T turbocharger upgrade for Isuzu diesel engines
• Designed for 4JG2T, 4JG2 and 4JH1 applications
• Suitable replacement for many IHI RHF5 / RHF4 / RHB5 style turbo setups
• Crank horsepower support: 150–220HP for diesel applications
• Compressor wheel: 42.0 / 56mm
• Turbine wheel: 41.3 / 47.0mm
• 6cm turbine housing with A/R 0.41
• Single-scroll turbine housing
• Oil and water cooled
• Journal bearing design
• Default actuator pressure: 1.0 bar / 14.7psi
• Supplied with oil feed, water line, oil return and gasket hardware

Compatibility

• Isuzu Trooper 3.1L 4JG2T
• Isuzu Bighorn 3.1L 4JG2T
• Holden Jackaroo 3.1L 4JG2T
• Opel Monterey 3.1L 4JG2T
• Isuzu 4JH1-TC 3.0L diesel with compatible IHI RHF5 VIEK / VA430093 / 8973544234 turbo setup
• Isuzu D-MAX / Holden Rodeo / Rodeo Pickup with compatible 4JH1-TC turbo configuration
• Many Isuzu or Mazda diesel engines using compatible standard 4-bolt RHF4H / RHF5 / RHB5 turbine outlet flange layouts

Important: Always confirm turbo flange, inlet, outlet, oil line and water line compatibility before ordering. Engine conversions, previous repairs and market specifications can affect fitment.

OE and Replacement Numbers

• 8971480760
• 8971480761
• 860010
• 860015
• 97086343
• 5T-614 860010
• E180027
• VA180027
• VD180027
• 8970385181
• 8-9703-85180
• 8-9703-85181

Turbo Part Number References

• VA430023 VICC
• VB430023 VI95
• VC430023 VIAN
• VD430023
• VE430023

Technical Overview

Why Upgrade to a TD04L-15T Turbo?

The TD04L-15T is a practical upgrade for Isuzu diesel engines where the original IHI RHF5 or RHF4 turbo is worn, underperforming or limiting power potential.

Compared with many factory turbochargers, the larger compressor cover inlet and outlet can support improved airflow. This makes the turbo suitable for engines built for stronger torque, towing, off-road use and improved road performance.

The supplier notes that the larger compressor inlet and outlet may require silicone hose adaptation, and that this turbo can have slightly more lag than the factory turbo while increasing power more towards the upper rev range.

Compressor and Turbine Options

• Cast 6+6 compressor wheel: Suitable for practical low-end torque and balanced diesel performance
• Billet 6+6 compressor wheel: Stronger upgraded wheel option for improved response and durability
• Billet 11+0 compressor wheel: Designed more towards top-end performance
• 12-blade STD turbine wheel: Standard turbine wheel option
• 9-blade STS turbine wheel: Optional performance turbine wheel configuration where available

Note: Available options can vary depending on stock and selected configuration.

What’s Included

• 1 × Kinugawa TD04L-15T turbocharger with actuator
• 1 × Oil feed line kit
• 1 × Water feed and return line kit
• 1 × Oil return flange kit
• 1 × 45cm NBR hose for oil return
• 2 × Circlips
• 1 × Turbine inlet and outlet gasket set
• 8 × Studs and nuts
• Balance report with anti-counterfeit tag

Important Fitment Notes

• This turbo is designed to bolt to compatible factory manifold and downpipe layouts.
• The compressor cover inlet and outlet are larger than many factory turbo setups.
• Aftermarket silicone hoses may be required to adapt the inlet and outlet pipework.
• Please confirm inlet flange, outlet flange, oil feed, oil return and water line compatibility before ordering.
• Professional fitting and tuning knowledge are strongly recommended.
• Boost control, fuelling and exhaust gas temperatures should be monitored on upgraded diesel engines.

Recommended Supporting Upgrades

• High-flow exhaust system
• Front-mount or upgraded intercooler
• Boost and EGT gauges
• Professional diesel tuning
• Fresh oil feed and return routing
• Intake pipework and silicone hose upgrades
• Cooling system inspection before installation

Ideal Uses

• Isuzu Trooper 3.1 4JG2T turbo upgrades
• Isuzu Bighorn 3.1 4JG2T performance builds
• Holden Jackaroo diesel turbo replacement
• Opel Monterey 3.1 diesel turbo upgrade
• Isuzu D-MAX / Holden Rodeo 4JH1-TC turbo applications
• Off-road diesel performance builds
• Towing and touring vehicles requiring stronger mid-range performance

Installation

• Professional installation is strongly recommended.
• Prime the turbo with clean engine oil before first start.
• Check oil feed, oil drain and water line routing before running the engine.
• Ensure all intake and exhaust connections are sealed correctly.
• Check actuator pressure and boost control setup before road use.
• Allow the vehicle to idle and check for leaks after installation.
• Re-check all fittings after the first heat cycle.

Estimated fitting time: 4–8 hours depending on vehicle condition, access, supporting pipework and installer experience.

FAQs

Q1: What engines is this Kinugawa TD04L-15T turbo designed for?
A: It is designed for Isuzu 4JG2T, 4JG2 and 4JH1 diesel engine applications with compatible turbo flange and pipework layouts.

Q2: Will it fit an Isuzu Trooper 3.1 4JG2T?
A: Yes, it is listed for Isuzu Trooper 3.1L 4JG2T applications.

Q3: Will it fit an Isuzu Bighorn 3.1 4JG2T?
A: Yes, it is listed for Isuzu Bighorn 3.1L 4JG2T applications.

Q4: Does it replace IHI RHF5 and RHF4 turbos?
A: Yes, it is designed as a replacement or upgrade for many IHI RHF5, RHF4 and RHB5-style applications with compatible flange layouts.

Q5: What power range does this turbo support?
A: The supplier lists this turbo for approximately 150–220HP crank horsepower on diesel applications.

Q6: Is this turbo oil cooled or water cooled?
A: It is both oil and water cooled.

Q7: What actuator pressure is supplied as standard?
A: The default actuator pressure is 1.0 bar / 14.7psi.

Q8: Will this be a direct bolt-on turbo?
A: It can bolt to compatible factory manifold and downpipe layouts, but the compressor inlet and outlet are larger than the stock turbo. Silicone hose adaptation may be required.

Q9: Does it include oil and water lines?
A: Yes, the kit includes an oil feed line kit, water feed and return line kit and oil return flange kit.

Q10: Does this turbo come with a balance report?
A: Yes, the kit includes a balance report with anti-counterfeit tag.

Q11: Is professional installation recommended?
A: Yes, professional installation is strongly recommended because turbo fitment affects oil supply, cooling, boost control and engine reliability.

Q12: Should the vehicle be tuned after installation?
A: A safe setup should be checked by a diesel tuning specialist, especially where boost, fuelling, intercooler or exhaust changes are made.

Why Buy from OFM4x4.CO.UK

• Specialists in 4x4 turbo, intake and diesel performance upgrades
• Carefully selected products for towing, touring and off-road builds
• Technical support before and after purchase
• UK-based customer service
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