IS20 turbo – IHI RHF5 / 111973P026
The IS20 is a popular OE-type turbo for several 2.0 TSI / 2.0 TFSI EA888 Gen.3 engines and is also often used as a bolt-on solution replacing the IS12 on the correct MQB vehicles. It is known for fast spool, good response, and a strong mid-range, making it suitable both as a replacement turbo and as a performance upgrade.
The IS20 is not a “big” turbo in the traditional sense, but it hits a very strong sweet spot between spool and power. On original 2.0T IS20 cars, figures typically reach up to 290–337 hp at Stage 1 and up to 334–351 hp at Stage 2, depending on fuel and setup. This shows very clearly that a healthy IS20 on a 2.0T can deliver a strong and usable power range without the car losing its original response.
This turbo is a good choice for anyone wanting more airflow and more power than a smaller standard turbo, while still keeping a car with fast boost response and good drivability.
Specifications
Manufacturer: IHI Turbo / CloverTurbo
Part number: 111973P026
Short spec: 9VA09
Interchangeable number: F51CEG-SR031B
Turbo model: RHF5
Engine size: 2.0L / 1984 ccm
Original power range: 200 / 211 / 220 / 230 hp
OEM numbers: 06K145702, 06K145702E, 06K145702K, 06K145702Q, 06K145702R, 06K145702T, 06K145722G, 06K145722L, 06K145874C, 06K145874E, 06K145874K, 06K145874L, 06K145874M
Fits
2009-15 Volkswagen Scirocco (137, 138) with 2.0 TSI Engine
2010-12 Volkswagen Sharan (7N) with 2.0 TSI Engine
2012-15 Skoda Octavia Combi RS (5E5) with 2.0 TSI Engine
2013-15 Skoda Octavia RS (5E3) with 2.0 TSI Engine
2013-15 Volkswagen Golf GTI VII (5G1, BE1) with 2.0L Engine
2013-15 Volkswagen Scirocco (137, 138) with 2.0 TSI Engine
2014- Audi A3 (8V) with 2.0 TFSI Engine
2014- Audi TT Roadster quattro with 2.0 TFSI Engine
2015 Skoda Octavia Combi RS (5E5) with 2.0 TSI Engine
2015 Volkswagen Sharan (7N1) with 2.0 TSI Engine
2017- Audi TT (FV3) quattro with 2.0 TFSI Engine
2017- Audi TT (FV3) with 2.0 TFSI Engine
Always check the OEM number, engine code, and vehicle model before ordering.
Guide – what is needed, and what can it make?
The IS20 is very popular because it offers a good balance between fast response and solid power. As an upgrade from the IS12, it is an obvious bolt-on solution on the correct MQB platforms, and with the right supporting parts it can deliver a noticeable improvement in both torque and top-end power.
To get proper results from an IS20, the best combination is typically a downpipe, intercooler, intake, and correct engine management calibration. On a mild to moderate setup, an IS20 will often be in the 280–320 hp range, depending on engine, fuel, hardware, and tuning. On original 2.0 TSI / TFSI cars with IS20, as mentioned, a higher level is often seen depending on the setup.
It is also a good idea to fit 1 step colder spark plugs, as this is often recommended for IS20 / IS38 setups to ensure stable ignition under higher load.
During installation, it is also common to replace or inspect the diverter valve, gaskets, and relevant fitting hardware. 06H145710J is often mentioned as the diverter valve for IS20 / IS38, and it makes sense to review the full installation while the turbo is already removed.
The IS20 is therefore an obvious choice for anyone wanting an efficient OEM-based turbo upgrade with fast spool, good durability, and strong power potential for road use.
