BMW K bikes (Bricks)

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active member
active member
I bought a K100 that has been sitting for 4 of 5 years. It turns over fine, but it's acting like the fuel pump is bad (understandably so!). 

I have a spare 87 fuel pump, but the electric plugs are different. Does anyone know where I could find a (fairly inexpensive) replacement fuel pump for my 85? Or perhaps there's a way to clean out the one I have?

Many thanks,


Rick G

Rick G
Here is a list of pumps that will do the job.

HOLDEN Commodore VK EFI, VL turbo and non turbo, VN onwards V6 and V8 sedan wagon statesman
HOLDEN Camira JD JE Astra Calibra
FERRARI 412i Coupe
NISSAN Skyline Pintara Pulsar Bluebird
ALFA ROMEO 33 Alfetta 75 90 GTV Spider
BMW M3 E30 M5 E28 318i 320i 323i 325e 325i 520i 525e 528i 535i 633Csi 635Csi 733i
FIAT Argenta Brava Regata Strada Ritmo X19
JAGUAR XJ6 XJs Sovereign
LANCIA Beta Delta Gamma Prisma Trevi Y10 Turbo
LOTUS Esprit Turbo
MG Metro Turbo Maestro Montego
MITSUBISHI Colt Turbo Lancer
OPEL Ascona Corse Kadett Manta Monza Omega Rekord Vectra
PEUGEOT 205 309GTi 405 505
RENAULT R5 Turbo R11 Turbo R18 Turbo R19 R21 Turbo R25 Turbo Espace Quadra Fuego
ROVER SD1 Vitesse 3500 Vanden Plas RANGE ROVER LAND ROVER 3.5 & 3.9 EFI
SEAT Ibiza Malaga
VOLKSWAGEN Transporter Caravelle
Mapco 22301

Most fuel pumps will do the job but don't fit well. If you can remove the rubber vibration damper and replace with one for a 38-37mm pump and that lets you fit many pumps. The outlet and electrical connections are the important things to match up. His pumps are a bit pricey but are good quality as the rest of his stuff.

"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama

Bikes 1999 K1100 LT with a Big Block 1200


Life time member
Life time member
You're making the assumption that the fuel pump is bad but this may not be the case. No help can be given unless you describe the symptoms you're experiencing. All we can do is tell you where to get a pump. There have been a few similar threads here over the last few days. Go to the Portal page and look down the list of Latest Topics or use the search bar on that page to search for threads relating to pumps
If you get no joy from that, then come back and ask.
Let us know how you go.


1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
 Question about replacing 85 k100 fuel pump Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90

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