turbocharger 17201-27040 17201-27030

The GT1749V turbocharger, with part numbers 17201-27040 and 17201-27030, is a critical component in the turbocharged diesel 

engine of the Toyota RAV4 2.0 D-4D with the 1CD-FTV engine. Turbochargers are key for boosting engine performance by increasing 

the amount of air that enters the engine, resulting in improved fuel combustion and greater power output. 

The GT1749V is designed to enhance engine efficiency, increase horsepower, and reduce fuel consumption, 

making it an excellent choice for owners looking to optimize their vehicle’s performance.

How the GT1749V Turbocharger Works

The primary function of a turbocharger is to harness the energy from exhaust gases to increase the engine’s air intake, 

which leads to better combustion and higher engine performance. The GT1749V features a twin-scroll turbine that is powered by exhaust gases. 

These gases spin the turbine wheel, which is connected to a compressor. 

The compressor draws in air and compresses it before it enters the engine’s intake manifold.

The pressurized air allows the engine to burn more fuel efficiently, which results in more power. 

As a result, turbocharged engines like the one in the Toyota RAV4 2.0 D-4D 1CD-FTV generate more power without increasing engine displacement. 

This leads to improved acceleration and overall performance, especially in driving situations that demand higher power output.

Key Features of the GT1749V Turbocharger

Variable Nozzle Technology (VNT): One of the standout features of the GT1749V is its VNT technology, which stands for Variable Nozzle Turbine. 

This advanced technology adjusts the angle of the turbine’s nozzles based on engine load and speed. 

This feature helps optimize turbo performance in a wide range of driving conditions, 

resulting in better power delivery and efficiency across the entire RPM range.

Durability and High-Quality Materials: The GT1749V is built to withstand the extreme conditions of modern turbocharged engines. 

It uses high-strength materials designed to endure high exhaust gas temperatures and pressures. 

The components of the turbocharger, including the turbine, compressor, and bearings, are engineered to resist heat and wear, 

ensuring longevity and consistent performance.

Improved Airflow Efficiency: The GT1749V turbocharger features a high-performance compressor 

and turbine wheel that are designed to enhance airflow. The improved aerodynamic design reduces energy loss, 

allowing the engine to perform better while maintaining higher fuel efficiency.

Compact and Lightweight Design: The GT1749V is designed to be compact, which allows it to fit into the engine 

bay of vehicles like the Toyota RAV4 without requiring significant modifications. Its lightweight construction helps reduce the overall weight of the engine, 

which can contribute to improved fuel efficiency and performance.

Oil and Water-Cooled Bearings: To prevent overheating and reduce friction, the GT1749V uses both oil and water-cooled bearings. 

This dual-cooling system helps maintain optimal operating temperatures, improving reliability and preventing premature wear of the turbocharger.

Benefits of the GT1749V Turbocharger

Increased Power and Torque: The most immediate benefit of installing the GT1749V turbocharger in the Toyota RAV4 2.0 D-4D is the significant 

increase in power and torque. The added air and fuel combustion provide more horsepower and better acceleration, 

which is especially beneficial when overtaking or driving at high speeds.

Better Fuel Efficiency: By improving the combustion process, the GT1749V helps the engine burn fuel more efficiently. 

This not only increases the engine’s performance but also reduces fuel consumption. The increased power output without 

a corresponding increase in fuel usage means that drivers can enjoy better miles per gallon (MPG) compared to non-turbocharged engines.

Reduced Emissions: Modern turbochargers, like the GT1749V, are designed to meet stringent emissions standards. 

By improving combustion efficiency, they help reduce harmful exhaust emissions such as carbon dioxide (CO2) and nitrogen oxides (NOx). 

This makes the GT1749V an environmentally friendly choice for vehicle owners.

Enhanced Driving Experience: The addition of a turbocharger like the GT1749V improves throttle response and provides a more dynamic driving experience. 

The engine becomes more responsive to the accelerator pedal, making the vehicle feel more lively and agile, especially in stop-and-go traffic or on winding roads.

Maintenance and Care for the GT1749V Turbocharger

While the GT1749V turbocharger is built for durability, proper maintenance is essential to ensure that it continues to perform at its best throughout its lifespan.

Regular Oil Changes: The turbocharger relies on the engine oil to lubricate and cool its moving parts. 

Regular oil changes are crucial to prevent the buildup of contaminants that could clog the oil passages and cause damage to the turbo. 

Using high-quality oil and ensuring that the correct oil level is maintained will help prolong the life of the turbo.

Air Filter Maintenance: A clean air filter is vital for the performance of the turbocharger. A clogged or dirty air filter restricts airflow into the engine, 

which can decrease the effectiveness of the turbo and lead to engine performance issues. 

Regular air filter checks and replacements are essential for optimal turbocharger performance.

Check for Leaks: It’s important to regularly inspect the turbocharger system for any signs of oil or boost leaks. Leaks can reduce the turbocharger’s 

efficiency and potentially cause engine damage if left unaddressed.

Avoiding Hard Stopping: After prolonged use or heavy acceleration, the turbocharger’s bearings can become extremely hot. 

It’s important to let the engine idle for a minute or two before turning it off, especially after driving at high speeds or under heavy loads. 

This allows the oil to cool the turbo components gradually, preventing heat damage.

Conclusion

The GT1749V turbocharger (17201-27040 / 17201-27030) for the Toyota RAV4 2.0 D-4D 1CD-FTV is an excellent upgrade for anyone 

looking to boost engine performance, increase fuel efficiency, and enhance the overall driving experience. 

With advanced features like Variable Nozzle Turbine technology, improved airflow efficiency, and durable construction, 

the GT1749V offers a perfect balance of power, economy, and reliability. Proper maintenance and timely servicing will ensure that the turbocharger 

continues to perform at its best, providing years of improved performance and driving enjoyment.