Kinugawa TD05H-18K 7cm Turbo for Toyota Land Cruiser 1HD-T / 1HD-FT / 1HD-FTE – 350–400HP

The Kinugawa TD05H-18K 7cm Turbocharger is a high-output performance turbo upgrade for Toyota Land Cruiser models powered by the 1HD-T, 1HD-FT and 1HD-FTE 4.2-litre turbo diesel engines.

Rated by Kinugawa for approximately 350–400HP potential crank / flywheel power, the TD05H-18K is designed for serious performance builds where significantly greater airflow and top-end power are required than the smaller 16G, 18G, 20G and 16K configurations can provide.

At the heart of the 18K is a large 55.1 / 75mm billet 7+7 compressor wheel manufactured using point-milled third-order surface geometry. Despite its considerable compressor capacity, the turbo retains Kinugawa's compact 7cm / A/R .49 turbine housing, helping maintain useful spool characteristics on the 4.2-litre 1HD diesel engine.

The turbine housing retains the Toyota CT26-style 4-bolt inlet and outlet configuration, allowing it to bolt to the compatible factory exhaust manifold and dump pipe rather than requiring conversion to a completely different exhaust-side turbo mounting system.

Power Capability: 350–400HP potential crank / flywheel power

Recommended Use: Extreme-performance street, off-road, competition and heavily modified Land Cruiser builds.

Engine Compatibility: Toyota 1HD-T / 1HD-FT / 1HD-FTE 4.2L Turbo Diesel

Important: The stated horsepower represents potential turbocharger capability rather than guaranteed engine output. Actual performance depends on engine specification, fuel delivery, boost pressure, intercooling, exhaust flow and professional tuning / calibration.

Choose the Right Kinugawa Turbo for Your Land Cruiser

OFM4x4 offers a range of Kinugawa TD05H and TD06H turbochargers for Toyota Land Cruiser 1HD diesel engines, allowing the turbo to be matched to the intended power level and vehicle use.

The TD05H-18K is the high-output option for customers targeting approximately 350–400HP while retaining the compact TD05H / 7cm turbine configuration.

Why Choose the TD05H-18K?

The TD05H-18K represents a substantial step up from the smaller Kinugawa Land Cruiser turbo options. Its 55.1 / 75mm billet compressor provides significantly greater airflow capability while the 7cm turbine housing is retained to help maintain exhaust-gas velocity and response.

• 350–400HP potential crank / flywheel capability
• Large 55.1 / 75mm billet 7+7 compressor wheel
• Point-milled third-order compressor blade surface
• 3-inch compressor inlet
• A/R .60 compressor housing
• 7cm / A/R .49 turbine housing
• 49 / 57mm TD05H turbine wheel
• Toyota CT26-style turbine inlet and outlet
• Anti-Surge and Non Anti-Surge compressor housing options
• Three turbine wheel configurations available
• Multiple actuator pressures available
• Journal bearing with 360-degree performance thrust bearing
• Oil and water cooled

Engine & Vehicle Compatibility

Toyota Land Cruiser 80 Series – 1HD-T & 1HD-FT

The TD05H-18K is listed for the 1991–1997 Toyota Land Cruiser HDJ80 / HDJ81 / HDJ82 equipped with the 1HD-T or 1HD-FT 4.2-litre turbo diesel engine.

It is designed as a performance replacement / upgrade for Toyota turbo references:

• 17201-17010
• 17201-17030

The turbine housing uses the same basic inlet and outlet format as the factory CT26 turbocharger, allowing it to bolt to the compatible factory exhaust manifold and dump pipe.

1HD-FTE Compatibility

Kinugawa also lists this turbo for Toyota 1HD-FTE applications using Toyota turbo reference 17201-17040, including applicable:

• Toyota Land Cruiser HDJ78
• Toyota Land Cruiser HDJ79
• Toyota Land Cruiser HDJ100
• Toyota Land Cruiser HDJ105 / applicable converted installations

For 1HD-FTE applications, Kinugawa advises confirming whether a different compressor housing is required or whether the 3-inch compressor configuration is to be retained.

If ordering for a 1HD-FTE application, please provide the vehicle model and current turbo configuration so the appropriate setup can be confirmed.

Technical Specifications

Available Configuration Options

The TD05H-18K can be configured through the compressor housing, turbine wheel and actuator spring pressure. The compressor wheel itself is the dedicated Billet 7+7 18K compressor.

Compressor Housing Options

• Anti-Surge
• Non Anti-Surge

The compressor housing uses an A/R .60 nozzle area with a 3-inch inlet and 2-inch outlet.

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

Compressor Wheel

Billet 7+7

The TD05H-18K uses a dedicated 55.1 / 75mm billet 7+7 compressor wheel.

Kinugawa specifies point milling with third-order surface geometry for this compressor wheel, allowing the blade shape to use a more complex three-dimensional surface than a conventional compressor design.

Turbine Wheel Options

• 12 Blades STD
• 9 Blades STS
• 10 Blades STS 55

The TD05H turbine wheel measures approximately 49 / 57mm.

Different turbine wheel designs allow the turbocharger configuration to be further tailored towards response, exhaust-flow capacity and high-RPM performance.

Spring / Actuator Pressure Options

The standard actuator configuration 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 engine specification, desired boost level and boost-control strategy. Selecting a stronger actuator spring does not automatically produce safe additional horsepower.

Cooling Type

Oil & Water Cooled

The TD05H-18K centre housing uses engine oil for lubrication together with engine coolant circulation for additional thermal management.

55.1 / 75mm Billet 7+7 Compressor

The major difference between the TD05H-18K and the smaller turbochargers in the range is its considerably larger 55.1 / 75mm compressor wheel.

This provides the airflow capacity required for the turbo's approximately 350–400HP potential flywheel-power range.

The 18K therefore moves beyond the typical touring and moderate-performance territory of the smaller G-series turbos and into serious high-output 1HD engine builds.

Point-Milled Third-Order Surface Compressor

The 18K billet compressor uses a 7+7 blade configuration with point-milled third-order surface geometry.

This advanced machining method allows more complex compressor-blade profiles to be manufactured accurately, supporting the airflow and efficiency requirements of the larger 18K compressor.

7cm Turbine Housing – Maintaining Response

Although the TD05H-18K uses a substantially larger compressor, Kinugawa retains the compact 7cm / A/R .49 turbine housing.

The original CT26 turbine housing is approximately 8cm, while the smaller 7cm Kinugawa housing increases exhaust-gas velocity through the turbine.

This configuration is intended to help retain useful spool characteristics while the much larger compressor provides the airflow required for high-output engine builds.

CT26-Style Bolt-On Turbine Housing

The TD05H-18K uses:

• Toyota CT26 4-bolt turbine inlet
• Toyota CT26 4-bolt turbine outlet
• Internal wastegate

On compatible applications, this allows the turbocharger to bolt to the factory exhaust manifold and dump pipe, reducing the fabrication normally associated with converting the engine to a completely different turbo flange.

3-Inch Compressor Inlet

The TD05H-18K uses a 3-inch compressor inlet.

Kinugawa specifies that the compressor-cover inlet / air-filter pipe must be modified to suit the larger 3-inch inlet on applicable installations.

This larger intake connection supports the increased airflow requirements of the 75mm exducer compressor wheel.

Journal Bearing with 360° Performance Thrust Bearing

The TD05H-18K uses a journal-bearing system with a 360-degree performance thrust bearing.

This provides full-circumference thrust support for the turbocharger's rotating assembly, an important consideration when operating a large compressor wheel at elevated boost and airflow levels.

Oil & Water Cooling

The centre housing is both oil and water cooled.

Engine oil provides lubrication to the journal-bearing system while coolant circulation assists with managing heat within the turbocharger centre housing.

Correct oil supply, unrestricted oil return, coolant circulation and proper turbocharger priming are essential during installation.

350–400HP Performance Capability

Kinugawa currently rates the TD05H-18K at approximately 350–400HP potential crank / flywheel power.

The stated maximum turbocharger power is calculated from the choke flow of the compressor map and represents the potential capability of the turbocharger rather than a guaranteed engine output.

Actual engine power will depend on factors including:

• Engine condition and compression
• Fuel delivery capability
• Injection pump or ECU calibration
• Injector specification
• Boost pressure
• Intercooler efficiency
• Intake airflow
• Exhaust system
• Exhaust gas temperature
• Engine cooling capacity
• Ambient conditions and altitude
• Supporting engine modifications
• Professional calibration

Who Is the TD05H-18K For?

The TD05H-18K is intended for heavily modified Land Cruisers where outright performance becomes a major priority.

It is particularly suitable for:

• 350–400HP 1HD engine builds
• High-output 1HD-T builds
• High-output 1HD-FT builds
• Modified 1HD-FTE applications
• Performance-oriented Land Cruiser 80 builds
• Competition and motorsport vehicles
• Large-tyre and heavily modified 4x4 builds
• Vehicles with upgraded intercooling
• Vehicles with high-flow exhaust systems
• Engines with substantial fuel-system upgrades
• Customers prioritising high-RPM airflow and maximum performance

TD05H-16K vs TD05H-18K

Choose the TD05H-16K if approximately 250–330HP is sufficient and quicker response remains a major priority.

Choose the TD05H-18K if the engine is being built towards approximately 350–400HP and the additional compressor airflow is required.

TD05H-18K vs TD06H-25G

The next option in the OFM4x4 Kinugawa 1HD range is the TD06H-25G.

The TD06H-25G moves to the larger TD06H turbine family and an 8cm housing, making it more appropriate where maximum airflow and very high power are the primary objectives.

Choose the TD05H-18K if:

• Your target is approximately 350–400HP
• You want to retain the compact TD05H / 7cm turbine combination
• Response remains important despite the high power target
• You want a large 18K billet compressor with CT26-style exhaust-side fitment

Consider the TD06H-25G if:

• Your build is targeting the upper end of the Kinugawa 1HD range
• Maximum airflow is the priority
• The engine and supporting systems are being built for competition-level output

Supporting Modifications

A turbocharger capable of approximately 350–400HP requires an appropriately prepared engine and supporting systems.

Depending on the engine and target output, upgrades may include:

• High-capacity fuel system
• Injection-pump upgrades on mechanically injected engines
• Appropriate ECU calibration on electronically controlled engines
• Injector upgrades where required
• High-efficiency intercooler
• Free-flowing intake system
• Free-flowing exhaust system
• Correct boost-control system
• Boost-pressure monitoring
• Exhaust-gas-temperature monitoring
• Cooling-system upgrades
• Engine internal upgrades depending on power target
• Drivetrain assessment for increased torque

Professional installation and dyno tuning are strongly recommended for a turbocharger of this performance level.

What’s Included

• 1 × Kinugawa TD05H-18K turbocharger
• 1 × Oil supply set
• 1 × Water coolant and return set
• 1 × Gasket set
• 1 × Kinugawa balance report with anti-counterfeit tag

Manufacturing & Balancing

The Kinugawa TD05H-18K is supplied brand new.

The turbocharger is fully balanced by Kinugawa and supplied with an individual balance report and anti-counterfeit tag.

Correct balancing is particularly important on a high-output turbocharger because the compressor and turbine assemblies operate at extremely high rotational speeds.

Installation Notes

• Toyota CT26-style 4-bolt turbine inlet
• Toyota CT26-style 4-bolt turbine outlet
• Internal wastegate
• Designed to bolt to the compatible factory exhaust manifold and dump pipe
• 3-inch compressor inlet requires intake / air-filter pipe modification on applicable installations
• 1HD-FTE installations should confirm the required compressor housing configuration
• Oil supply and return must be correctly installed
• Coolant lines must be connected correctly
• Turbocharger must be primed with clean engine oil before first start
• Check the intake system for restrictions and leaks
• Check all exhaust connections for leaks
• Verify boost pressure before full-load operation
• Fuelling must be calibrated to the engine and turbo specification
• EGT monitoring is strongly recommended on high-output diesel builds

Professional installation and tuning are strongly recommended.

Frequently Asked Questions

Q1: Which engines does the Kinugawa TD05H-18K fit?
A: Kinugawa lists the TD05H-18K for Toyota Land Cruiser 1HD-T, 1HD-FT and 1HD-FTE 4.2-litre turbo diesel applications.

Q2: How much power can the TD05H-18K support?
A: Kinugawa currently rates this 3-inch TD05H-18K configuration at approximately 350–400HP potential crank / flywheel power.

Q3: Does it fit the Toyota Land Cruiser 80 Series?
A: Yes. Kinugawa lists the 1991–1997 HDJ80, HDJ81 and HDJ82 with 1HD-T or 1HD-FT engines.

Q4: Does the TD05H-18K fit the 1HD-FTE?
A: Yes. Kinugawa references 1HD-FTE applications including HDJ78, HDJ79, HDJ100 and HDJ105. The appropriate compressor housing configuration should be confirmed for the vehicle.

Q5: What compressor wheel does the TD05H-18K use?
A: It uses a 55.1 / 75mm billet 7+7 compressor wheel.

Q6: Is the TD05H-18K compressor wheel cast or billet?
A: Billet. Kinugawa specifies a point-milled 7+7 compressor wheel with third-order surface geometry.

Q7: What compressor housing options are available?
A: Anti-Surge and Non Anti-Surge compressor housing configurations are available.

Q8: What turbine wheel options are available?
A: The selectable configurations are 12 Blades STD, 9 Blades STS and 10 Blades STS 55.

Q9: What size is the turbine wheel?
A: Kinugawa specifies a turbine wheel measuring approximately 49 / 57mm.

Q10: What turbine housing does the TD05H-18K use?
A: It uses a 7cm / A/R .49 internally gated turbine housing.

Q11: What size is the compressor inlet?
A: The compressor housing uses a 3-inch inlet and 2-inch outlet.

Q12: Does the intake pipe require modification?
A: Yes, on applicable installations the compressor-cover inlet / air-filter pipe needs to be modified to fit the 3-inch compressor inlet.

Q13: Does it bolt to the factory exhaust manifold?
A: On compatible applications, yes. The turbine housing uses the Toyota CT26-style 4-bolt inlet and is designed to fit the factory exhaust manifold.

Q14: Does it fit the factory-style dump pipe?
A: On compatible applications, yes. The turbine outlet retains the Toyota CT26-style 4-bolt configuration.

Q15: What is the standard actuator pressure?
A: The standard actuator pressure is 1.0 bar / 14.7 PSI.

Q16: What alternative actuator pressures are available?
A: Kinugawa lists 0.3, 0.5, 0.8, 1.2, 1.5, 1.7 and 2.0 bar alternatives in addition to the default 1.0 bar actuator.

Q17: Is the TD05H-18K oil or water cooled?
A: Both. The centre housing uses oil lubrication and water cooling.

Q18: What bearing system does it use?
A: It uses a journal-bearing system with a 360-degree performance thrust bearing.

Q19: What comes with the TD05H-18K?
A: The set includes the turbocharger, oil supply set, water coolant and return set, gasket set and Kinugawa balance report with anti-counterfeit tag.

Q20: What is the difference between the TD05H-16K and TD05H-18K?
A: The 16K uses a 49.6 / 68mm compressor and targets approximately 250–330HP. The 18K increases compressor size to 55.1 / 75mm and potential output to approximately 350–400HP.

Q21: Should I choose the TD05H-18K or TD06H-25G?
A: The TD05H-18K is an excellent choice for approximately 350–400HP builds where response and the compact 7cm TD05H configuration remain important. The TD06H-25G is aimed towards even higher-output builds where maximum airflow takes greater priority.

Q22: Is professional tuning required?
A: Yes. A turbocharger of this capacity requires correctly matched fuelling, boost control, intercooling and engine calibration. Professional tuning is strongly recommended.

Why Buy from OFM4x4.CO.UK

• Specialists in Toyota Land Cruiser performance upgrades
• Full Kinugawa 1HD turbo range available
• Options for mild upgrades through to extreme-performance builds
• Turbo solutions for 1HD-T, 1HD-FT and 1HD-FTE engines
• Technical assistance when selecting the correct turbo for your target power
• Multiple compressor housing configurations
• Multiple turbine wheel configurations
• Multiple actuator pressure options
• Supporting Land Cruiser performance parts available
• UK-based customer service