It is imperative that you confirm your Turbocharger part number before purchasing any new parts. This part number uniquely identifies the turbocharger and is the only way to confirm the correct fitment for your vehicle. Failing to do so could mean you get the wrong part which will not fit and will not operate correctly on your vehicle.

Part numbers can be found from the turbocharger itself and are often located on plates or ground off areas on the turbocharger, please see the list of manufacturers to learn how to identify your turbocharger correctly:






If you are unable to find your turbocharger manufacturer or find your turbochargers part number then please don’t hesitate to contact us at Telford Turbos 01952 58 54 54, we will be able to help in finding your number.


Garrett Turbo identification

The part number is usually located on the alloy compressor cover of a Garrett turbocharger. The part number will either be on a small Garrett plate, or more commonly dotted into the compressor cover itself. There will be a series of numbers on the identification tag starting with 4, 7 or 8 for the newer units.


Garrett is the most popular turbocharger manufacturer for most road vehicles.

Garrett usually casts its brand onto the compressor housing. Newer turbos come equipped with variable geometry turbo technology (VNT) and sometimes electronics in the form of a Rotary Electronic Actuator) REA which operates the Turbo through the VNT system.



Borg Warner part numbers are usually located on the compressor housing on a small plate. They have the largest range of part numbers so it can be difficult.

Borg Warner Partnumber: 5435-970-0021

988 can be swapped with 970 when searching for your turbocharger.

Borg Warner turbochargers are also fitted to commercial boats, trucks to normal passenger vehicles.

Sometimes they might have KKK or a K in a triangle stamped on the compressor housing.



Mitsubishi turbochargers (MHI) have a 5 digit prefix followed by a dash then a 5 digit suffix and often start with a 4.

Mitsubishi (MHI) supply many of the European automotive makers such as BMW, GM, JLR, PSA, Renault, Volvo and VW and marine engines manufactures.



IHI use the Turbo Spec as the turbocharger part number, they usually use 4 characters, usually two letters and two numbers or 4 letters.


IHI turbochargers are used in the automotive, heavy truck, construction machine, marine and industrial engine markets.



Holset use there assembly number as the part number, they also usually start with a 3 or 4 the turbo type can also be useful when trying to narrow down a Holset turbo to application.

Holset are part of the Cummins group design and manufacture turbochargers for diesel and heavy duty applications, offering units for engines 3 litres and above for road vehicles, marine vehicles and generators.