Kinugawa TD04L-15T 6cm Turbo for Isuzu 4JG2 / 4JG2T / 4JH1 3.0–3.1 Diesel – 150–220HP / +45% Torque

The Kinugawa TD04L-15T 6cm Turbocharger is a performance turbo upgrade for compatible Isuzu 4JG2, 4JG2T and 4JH1 diesel engines, combining stronger airflow and performance potential with a relatively compact TD04L turbine configuration.

Rated by Kinugawa at approximately 150–220HP crank horsepower for diesel applications, the TD04L-15T uses a 42.0 / 56mm 15T compressor wheel, a 41.3 / 47.0mm TD04L turbine wheel and a compact 6cm / A/R .41 turbine housing.

Kinugawa identifies this version as its +45% torque configuration within the Isuzu TD04L range. It sits between the smaller TD04L-15G and larger TD04L-19T, making it particularly attractive for customers looking for a substantial performance upgrade without moving directly to the largest 19T configuration.

Power Capability: 150–220HP crank horsepower for diesel

Kinugawa Torque Rating: +45% torque configuration

Compressor: TD04L-15T Trim 56

Engine Compatibility: Isuzu 4JG2 / 4JG2T 3.1L and compatible 4JH1-TC 3.0L Diesel

Original Turbo Family: Designed for applications using compatible IHI RHF4 / RHF4H / RHF5 / RHB5-style turbine connections.

Important: The 150–220HP figure represents turbocharger airflow capability rather than guaranteed engine output. Actual performance depends on engine condition, fuel delivery, boost pressure, intercooling, intake and exhaust flow and correct calibration.

Choose the Right Kinugawa Turbo for Your Isuzu

OFM4x4 offers four Kinugawa TD04L turbo configurations for Isuzu 4JG2, 4JG2T and compatible 4JH1 diesel applications. The range allows the turbocharger to be selected according to the required balance between response, low-RPM torque and maximum power capability.

The TD04L-15T is an excellent middle-to-upper performance option in the range. It provides greater performance potential than the 13T and 15G while retaining a smaller compressor than the maximum-output 19T.

Why Choose the TD04L-15T?

The TD04L-15T is aimed at modified Isuzu diesel engines where stronger mid-range and top-end performance are required while maintaining a good balance between turbo response and airflow capacity.

• 150–220HP crank horsepower capability
• Kinugawa +45% torque configuration
• 42.0 / 56mm 15T compressor wheel
• 41.3 / 47.0mm TD04L turbine wheel
• 6cm / A/R .41 turbine housing
• 2.4-inch / 60mm compressor inlet
• 2-inch / 50mm compressor outlet
• RHF4H / RHF5-style turbine inlet
• RHF4H / RHF5 / RHB5 4-bolt turbine outlet
• Single-scroll turbine housing
• Internal wastegate
• Journal-bearing construction
• Oil and water cooled
• Anti-Surge or Non Anti-Surge compressor housing
• Cast or billet compressor wheel options
• STD or STS turbine wheel options
• Multiple actuator pressures available

Vehicle & Engine Compatibility

Kinugawa lists the TD04L-15T for compatible vehicles using Isuzu 4JG2 / 4JG2T 3.1L and 4JH1-TC 3.0L diesel engines.

Kinugawa also states that the turbine housing can replace applications using compatible standard 4-bolt RHF4H, RHF5 and RHB5 turbine outlet flange arrangements.

Fitment should always be confirmed from the original turbocharger flange configuration, particularly where several turbo variants were fitted during production or the vehicle has previously been modified.

4JH1-TC 3.0L Applications

Kinugawa specifically lists the Isuzu 4JH1-TC 3.0L diesel with IHI RHF5 VIEK / VA430093 and OE reference 8973544234, including compatible Isuzu D-Max, Holden Rodeo and Rodeo Pickup applications.

This means the TD04L-15T is not restricted to the well-known 3.1-litre Trooper / Bighorn platform and can also be used for selected later 3.0-litre Isuzu applications where the required turbo flange arrangement is present.

OE & Turbo Reference Numbers

Compatible OE references listed by Kinugawa include:

• 8971480760
• 8971480761
• 860010
• 860015
• 97086343
• 5T-614
• E180027
• VA180027
• VD180027
• 8970385181
• 8-9703-85180
• 8-9703-85181
• 8973544234 – applicable 4JH1-TC installation

Turbo references include:

• VA430023 VICC
• VB430023 VI95
• VC430023 VIAN
• VD430023
• VE430023
• VA430093 / VIEK – applicable 4JH1-TC installation

Please compare the turbine inlet and outlet flange arrangement with the existing turbocharger before ordering.

Technical Specifications

Available Configuration Options

One of the major advantages of the Kinugawa TD04L-15T is the ability to configure the turbocharger according to the intended engine characteristics and driving style.

Compressor Housing

• Non Anti-Surge
• Anti-Surge

The compressor housing uses a 2.4-inch / 60mm inlet and 2-inch / 50mm outlet.

The Non Anti-Surge configuration uses the conventional compressor-cover arrangement, while the Anti-Surge version incorporates a ported compressor inlet.

Compressor Wheel

• Cast 6+6
• Billet 6+6 – better suited to low-end torque
• Billet 11+0 – better suited to top-end speed

The TD04L-15T compressor measures 42.0 / 56mm.

Kinugawa specifically identifies the 6+6 blade design as the configuration better suited to low-end torque, while the 11+0 blade design is intended to favour top-end speed.

Turbine Wheel

• 12 Blades STD
• 9 Blades STS

Both configurations use the TD04L turbine dimensions of 41.3 / 47.0mm.

Turbine wheel design influences rotating mass, spool characteristics, exhaust flow and performance at higher engine speeds.

Spring / Actuator Pressure

The standard actuator specification is:

1.0 bar / 14.7 PSI – Default

Alternative actuator pressures available from Kinugawa include:

• 0.3 bar
• 0.5 bar
• 0.8 bar
• 1.0 bar – Default
• 1.2 bar
• 1.5 bar
• 1.7 bar
• 2.0 bar

Important: Actuator pressure must be selected according to the intended boost level, engine specification and boost-control strategy. A higher actuator pressure should not be treated as a standalone method of increasing engine power.

Cooling Type

Oil & Water Cooled

The TD04L-15T uses engine oil for journal-bearing lubrication together with coolant circulation through the centre housing for additional thermal management.

42.0 / 56mm TD04L-15T Compressor

The 42.0mm inducer / 56mm exducer 15T compressor gives this turbo greater airflow capacity than the smaller options while remaining below the larger 19T configuration.

This makes the TD04L-15T particularly well suited to builds where the owner wants a meaningful increase in performance but still values usable response for road, towing, touring and off-road applications.

6cm / A/R .41 Turbine Housing

The TD04L-15T uses a compact 6cm / A/R .41 single-scroll turbine housing.

The smaller turbine housing helps maintain exhaust-gas velocity and turbine response, an important characteristic on relatively low-revving 3.0L and 3.1L diesel engines.

Kinugawa notes that the larger compressor arrangement can produce slightly more lag than the factory turbocharger, with the benefit of stronger performance towards the upper part of the engine's usable RPM range.

Factory Manifold & Downpipe Fitment

Kinugawa states that the TD04L-15T is designed to bolt to the compatible factory manifold and downpipe.

The turbine configuration uses:

• Standard RHF4H / RHF5 turbine inlet
• Standard RHF4H / RHF5 / RHB5 4-bolt turbine outlet
• 6cm / A/R .41 housing
• Single-scroll configuration
• Internal wastegate

Because several IHI turbocharger configurations were used across these vehicles, the inlet and outlet flange specification should always be confirmed before ordering.

Larger Compressor Inlet & Outlet

The TD04L-15T compressor housing is larger than the original turbocharger connections on many compatible applications.

• Compressor Inlet: 2.4 inch / 60mm
• Compressor Outlet: 2 inch / 50mm

Kinugawa states that there is sufficient engine-bay space for the larger compressor housing on the intended applications and that aftermarket silicone hoses can be used to adapt the intake and intercooler connections where required.

Journal Bearing Construction

The TD04L-15T uses a proven journal-bearing centre section.

Correct oil supply, unrestricted oil return and proper turbocharger priming are essential for reliable operation. Oil contamination or a restricted oil return can cause premature turbocharger failure.

Oil & Water Cooling

The turbocharger uses both engine-oil lubrication and water cooling.

The supplied installation components include the oil feed system together with the water feed and return line kit.

If the turbocharger is replacing a failed unit, the engine oil, oil feed, oil return and coolant lines should be inspected carefully before installation.

150–220HP Performance Capability

Kinugawa rates the TD04L-15T at approximately 150–220HP crank horsepower for diesel applications.

The turbocharger's airflow capability does not mean that simply installing it will produce 220HP. Reaching higher output levels requires the complete engine package to support the additional airflow.

Important factors include:

• Engine condition
• Fuel injection system capability
• Fuel calibration
• Boost pressure
• Intercooler efficiency
• Intake airflow
• Exhaust flow
• Exhaust gas temperature
• Engine cooling
• Supporting modifications

TD04L-15T vs TD04L-15G vs TD04L-19T

Choose the TD04L-15G if response and all-round road or touring performance are the main priorities.

Choose the TD04L-15T if you want stronger performance potential of approximately 150–220HP while maintaining a good balance between response and airflow.

Choose the TD04L-19T for builds targeting approximately 200–250HP where maximum airflow is more important than the quickest possible spool.

Complete Kinugawa Isuzu Turbo Range

• TD04L-13T – 130–180HP / +30% Torque – fast response and mild performance upgrade
• TD04L-15G – 150–200HP / +40% Torque – responsive all-round road and touring upgrade
• TD04L-15T – 150–220HP / +45% Torque – strong performance with good response
• TD04L-19T – 200–250HP / +60% Torque – maximum performance and airflow

Supporting Modifications

For higher-output applications, the TD04L-15T should be installed as part of a properly matched engine package.

Depending on the intended power level, supporting upgrades may include:

• Correct fuel-system calibration
• Fuel-system upgrades where required
• Upgraded intercooler
• Free-flowing exhaust system
• Improved air intake
• Appropriate boost control
• Boost-pressure monitoring
• Exhaust-gas-temperature monitoring
• Cooling-system assessment
• Engine-condition checks before tuning

Professional installation and tuning are recommended for performance applications.

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 oil return hose
• 2 × Circlips
• 1 × Turbine inlet and outlet gasket set
• 8 × Studs and nuts
• 1 × Kinugawa balance report with anti-counterfeit tag

Manufacturing & Balancing

The Kinugawa TD04L-15T is supplied brand new and includes a Kinugawa balance report with anti-counterfeit identification.

Installation Notes

• Designed for compatible factory manifold and downpipe fitment
• Standard RHF4H / RHF5 turbine inlet
• Standard RHF4H / RHF5 / RHB5 4-bolt turbine outlet
• 6cm / A/R .41 single-scroll turbine housing
• Internal wastegate
• 2.4-inch / 60mm compressor inlet
• 2-inch / 50mm compressor outlet
• Compressor connections are larger than stock on many applications
• Silicone reducers or adapter hoses may therefore be required
• Confirm turbine inlet and outlet flange dimensions before ordering
• Ensure correct oil feed and unrestricted oil return
• Connect the coolant feed and return correctly
• Prime the turbocharger with clean engine oil before initial start-up
• Check intake, boost and exhaust systems for leaks
• Verify boost pressure before full-load operation
• Fuelling and boost must be correctly matched

Frequently Asked Questions

Q1: Which engines does the Kinugawa TD04L-15T fit?
A: Kinugawa lists the turbo for compatible Isuzu 4JG2 / 4JG2T 3.1-litre and 4JH1-TC 3.0-litre diesel applications.

Q2: Does it fit the Isuzu Trooper 3.1?
A: Yes. Kinugawa specifically lists the Isuzu Trooper 3.1L 4JG2T.

Q3: Does it fit the Isuzu Bighorn 3.1?
A: Yes. The Isuzu Bighorn 3.1L 4JG2T is specifically listed.

Q4: Does it fit the Opel Monterey 3.1?
A: Yes. Kinugawa lists the Opel Monterey 3.1L 4JG2T.

Q5: Does it fit the Holden Jackaroo?
A: Yes. Compatible Holden Jackaroo 3.1L 4JG2T applications are listed.

Q6: Does it fit the Isuzu D-Max 3.0 4JH1?
A: Kinugawa lists compatible 4JH1-TC 3.0L D-Max applications using the applicable IHI RHF5 turbo arrangement. Flange compatibility should be confirmed before ordering.

Q7: How much power can the TD04L-15T support?
A: Kinugawa rates the TD04L-15T at approximately 150–220HP crank horsepower for diesel applications.

Q8: What does the +45% torque rating mean?
A: Kinugawa positions the TD04L-15T as its +45% torque configuration. Actual engine torque increase depends on boost, fuelling, engine condition, supporting modifications and calibration.

Q9: What compressor wheel does it use?
A: The TD04L-15T compressor wheel measures 42.0 / 56mm.

Q10: What compressor housing options are available?
A: Non Anti-Surge and Anti-Surge compressor housings are available.

Q11: What compressor wheel options are available?
A: Kinugawa offers Cast 6+6, Billet 6+6 and Billet 11+0 compressor wheel configurations.

Q12: Which compressor wheel is better for low-end torque?
A: Kinugawa identifies the 6+6 blade configuration as better suited to low-end torque.

Q13: Which compressor wheel is better for top-end performance?
A: Kinugawa identifies the 11+0 blade configuration as better suited to top-end speed.

Q14: What turbine wheel does it use?
A: The TD04L turbine wheel measures 41.3 / 47.0mm.

Q15: What turbine wheel options are available?
A: The TD04L-15T is available with 12-Blade STD or 9-Blade STS turbine wheel configurations.

Q16: What turbine housing does it use?
A: It uses a 6cm / A/R .41 single-scroll turbine housing.

Q17: Does it bolt to the original manifold and downpipe?
A: Kinugawa states that it bolts to the compatible factory manifold and downpipe. Flange specifications should still be checked before ordering.

Q18: Will the intake or intercooler hoses require adaptation?
A: They may. The compressor housing uses a 60mm inlet and 50mm outlet, which are larger than the original connections on many applications. Suitable silicone reducers or adapters can be used.

Q19: Does the TD04L-15T have more lag than the factory turbo?
A: Kinugawa states that it may have slightly more lag than the factory turbo while delivering stronger performance towards the upper part of the rev range.

Q20: What bearing system does it use?
A: It uses a journal-bearing centre section.

Q21: Is the turbo water cooled?
A: Yes. The TD04L-15T uses both oil lubrication and water cooling.

Q22: What is the standard actuator pressure?
A: The standard actuator is 1.0 bar / 14.7 PSI.

Q23: Can I choose a different actuator pressure?
A: Yes. Kinugawa lists 0.3, 0.5, 0.8, 1.2, 1.5, 1.7 and 2.0 bar alternatives in addition to the standard 1.0 bar specification.

Q24: Is the TD04L-15T better than the TD04L-15G?
A: It depends on the intended build. The TD04L-15G is positioned as a responsive 150–200HP option, while the TD04L-15T extends the performance range to approximately 150–220HP with Kinugawa's +45% torque positioning.

Q25: Should I choose the TD04L-15T or TD04L-19T?
A: The TD04L-15T is better suited to builds where a strong balance between response and performance is required. The larger TD04L-19T is intended for approximately 200–250HP applications where maximum airflow and top-end performance take greater priority.

Q26: What is included with the turbocharger?
A: The kit includes the TD04L-15T turbocharger with actuator, oil feed line kit, water feed and return line kit, oil return flange kit, 45cm NBR oil return hose, two circlips, turbine inlet and outlet gasket set, eight studs and nuts and a Kinugawa balance report with anti-counterfeit tag.

Why Buy from OFM4x4.CO.UK

• Complete Kinugawa Isuzu 4JG2 / 4JH1 turbo range
• Four turbo sizes covering responsive road builds through to 250HP performance applications
• Turbo solutions for Isuzu Trooper, Bighorn, D-Max and compatible applications
• Anti-Surge and Non Anti-Surge housing options
• Cast and billet compressor configurations
• STD and STS turbine wheel options
• Multiple actuator pressure options
• Technical assistance when choosing the appropriate turbo configuration
• Supporting 4x4 performance upgrades available
• UK-based customer service