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What is a vacuum/tandem pump and what do they do? A tandem pump can be simply described as a low pressure fuel pump in a diesel engine which also includes a vacuum pump. It is called a tandem pump because it has two functions: the first function is to activate the vacuum pump for the … Read more

Blog header P1043 HF

If you work with 1.9 TDI engines – whether in tuning, performance builds, or injector refurbishment – you’ve likely come across the DSLA150P1043 injector nozzle. This guide breaks down exactly what it is, what “high flow” means, why tuners choose it, and which vehicles it fits. We’ll also explain the crucial differences between OEM and enlarged flow variants.

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