Turbocharger Manufacturers in China: A Buyer's Guide with Models and Part Numbers

The turbocharger is one of the most requested engine parts in the aftermarket, and also one of the easiest to order wrongly. A single engine family can use several turbo models, and the same turbo model can appear under many OEM part numbers. This guide explains how turbochargers are classified, shows real cross-reference examples from Chinese turbocharger catalogs, and lists what to include in your inquiry so that you receive the right part the first time.

What a turbocharger does

A turbocharger uses exhaust gas to spin a turbine wheel. The turbine is connected by a shaft to a compressor wheel, which pushes more air into the engine. More air means more fuel can be burned efficiently, so the engine produces more power from the same displacement. The shaft turns at very high speed, which is why balancing, bearing quality and oil supply matter so much.

Main components of a turbocharger

• Turbine housing: takes the exhaust gas. It works under high heat, and catalog data for heavy-duty housings mentions resistance up to 750°C.
• Turbine wheel and shaft: usually cast from a nickel-based heat-resistant alloy. K418 is one of the alloys commonly named for turbine wheels.
• Compressor housing and compressor wheel: the compressor wheel is either cast or machined from billet aluminium (billet wheels are used for high-performance versions).
• Cartridge (CHRA): the rotating assembly: shaft, bearings and seals. It is balanced as a unit and is the most common replacement item.
• Wastegate or actuator: controls boost pressure. Pneumatic and electronic actuators both exist.
• Fitting parts: V-band clamps, gaskets and repair kits.

How to read turbo model codes

Turbo model codes are not random. They usually point to the turbo family and size, and they are the fastest way to confirm compatibility together with the OEM part number. Typical families you will see in catalogs:

• GT / GTA / TB / TA: common on light and medium diesel engines and many passenger cars (examples: GT1544V, GT2052V, GTA2056V, TB2505).
• HX / HE: heavy-duty truck and construction engines (examples: HX35, HX55, HE500FG).
• K and S series (K03, K27, K31, S200G, S410G): passenger-car, truck and industrial engines.
• TD / TF / TE / RHF: compact turbos widely used on Japanese diesel engines.
• KTR: large turbos for bulldozers and heavy mining machines.

The letter V at the end (for example GT1544V, GT2052V, RHF4V) normally indicates a variable-geometry version. Never swap a variable-geometry turbo for a fixed one unless the engine supplier confirms it.

Turbocharger cross-reference examples by application

The tables below are examples taken from Chinese factory catalogs. They show how one engine corresponds to a turbo model and to one or more OEM numbers. Always confirm the exact engine number and turbo nameplate before ordering. "G.W." is the gross weight of the packed turbo.

Passenger cars and light vehicles

Construction machinery: excavators, bulldozers, loaders

Heavy-duty diesel engines for trucks, buses and generators

Japanese diesel engines (pickup, light and medium trucks)

Weight: a useful sanity check

Packed weight is a simple way to spot a wrong match. In these catalogs, compact turbos for pickups and small diesel engines weigh about 4–6 kg, turbos for excavators and trucks about 12–25 kg, and large units for big mining and marine-class engines reach 30–65 kg. If the weight on a quotation is far from the original, ask why.

What to include in your turbocharger inquiry

• Engine model and engine number, vehicle or machine model and year.
• OEM part number(s) and the turbo model printed on the nameplate or housing.
• Photos of the old turbo from the compressor side, turbine side and the oil inlet/outlet flanges.
• Fixed or variable geometry, and the actuator type (pneumatic, electronic, or none).
• Whether you need a complete turbo, a cartridge only, or individual parts such as wheels, housings and repair kits.
• Target quantity, packing and destination port.

Quality checks before you order

• Balancing: ask whether the cartridge is high-speed balanced and whether this is done for every unit.
• Turbine wheel material: ask for the alloy (for example K418) and the casting process.
• Leak testing: ask whether each unit gets a sealing or leakage inspection.
• Process control: ask how many machining steps are controlled and measured. Turbo factories often quote dozens of controlled processes per unit.
• Management system: ask for an automotive quality-system certificate such as IATF 16949 (formerly TS 16949).
• Interchange: ask for a written confirmation of the OEM numbers the part replaces, and keep it with your order.

Turbo spare parts you can source separately

Many suppliers do not sell only complete turbos. They also supply cartridges, compressor wheels (cast or billet), turbine wheels and shafts, compressor and turbine housings, wastegates and actuators, V-band clamps, gaskets, seal rings, bearings, heat shields and repair kits. Buying parts separately is common for workshops that rebuild turbos and for importers who want a lower cost per unit.

Catalogs list spare parts for more than 60 turbo models, including the HX25 to HX83 range, K03 to K42, S100 to S400, and GT12 to GT50.

Frequently asked questions

Can I order a turbocharger using only the OEM part number?

You can start with it, but confirm it against the turbo model, engine number and photos. Several OEM numbers can map to the same turbo, and one engine can have more than one turbo version.

Should I buy a complete turbo or only a cartridge?

If housings are undamaged, a cartridge is cheaper and quicker to fit. If housings are cracked, deformed or you do not know their condition, a complete turbo avoids repeated failure.

Why do the same turbo models appear for different engines?

Turbo families are shared across engine brands. The match depends on housing size, flange pattern, actuator and oil connections, not only on the family name.

Which turbo suppliers can I compare?

The China Auto Parts data package lists hundreds of factories by product category, so you can shortlist turbo suppliers and compare them on one list.

Find turbocharger factories in China

Our All China Auto Parts data package gives you a structured directory of Chinese auto parts manufacturers by product category, with the information you need to start your inquiries. New to sourcing from China? Read our China auto parts manufacturing guide first.