Question about 1984 BMW K 100 RT

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Universal fuel pump versus genuine fuel pump for BMW K100RT

I have a BMW K100RT and it had been sitting in my garage for 6 years with 1/2 a tank of fuel. I found that the petrol had gone stale, it has crystallised in the tank. I have cleaned the tank right out, but I’m troubled about the fuel pump. The bike had done160,000k’s and maybe I should buy a new fuel pump, but the cost for an original bosch fuel pump is around $500AU, there is a Bosch part # 0986580013 universal fuel pump that I may use instead of original and the cost of it is only $86au
the ad for the Bosch # 0986580013 fuel pump reads as follows
BRAND NEW high performance Bosch 51mm INTANK fuel pump.
This is an universal fuel pump - suits any INTANK application.
Genuine Bosch. Made in Czech Republic. In original Bosch packaging and documentation.
*** Sorry we don't have any performance data on this fuel pump, other than the fact that this is a 51mm INTANK fuel pump. Perhaps do a bit of homework yourself to decide if this pump is the right choice for your vehicle. ***
I’m having a problem finding any specifications on the abovementioned fuel pump. Can anyone help me to know whether this pump would be okay to use on my BMW K100 bike. The original BMW K100 specifies the fuel pump pressure 2.5 bar and output 45 litres per hour, is it possible to go higher in pressure and flow?

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  • SAPWanderer Apr 25, 2010

    Hi GVMG,

    Did the cheaper fuel pump work okay? I have a K100RT and the fuel pump has failed so l need to replace my pump. I am curious if the alternative pump worked and where you purchased it from





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Without changing out your fuelline I would not reccomend to go for a higher pressure and flow.
About the fuelpump....sometimes going for the cheap option is in the longrun more expensive.

Posted on Mar 02, 2009


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