Yeah I know what you mean, the risk is an over pressure occurring and causing a leak. However as this is a diesel, there is very little risk of a fire as the ignition source would have to be very hot indeed. As far as damaging the engine & or the fuel supply system, again the risk seems small. The diesel is subjected to 10s of thousands of PSI at the injectors and the 5 bar max produced by the lift pump is insignificant. That leaves the physical package size of the pump, as the container looks identical, it's hard not to think the pump will fit straight in, they are both 43mm in diameter, so that's not a problem. The last thing is the difference between diesel and petrol itself, this is a harder one to figure, diesel is more oily and the viscosity appears different, so maybe meaning the appropriate pumps are built to different tolerances. I can't find enough info to confirm or deny this, leaving me with a niggle of doubt. I found the Bosch pump for £97 and am just trying to decide whether to gamble on it or not. It's a lot of dosh to lose if the gamble fails.
It's funny the lift pump for petrol models is freely available, yet there is absolutely nothing to be found about diesel versions. Why does nobody stock them or even list any technical data? Sorry that's a rhetorical question!
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