Author Topic: WTB Fuel Pump Relay  (Read 8539 times)

Offline RetroTexan

  • ^ Motobrick Curious
  • Posts: 61
WTB Fuel Pump Relay
« on: July 01, 2025, 12:11:15 PM »
The strangest thing happened to my nearly 40 year old K100, the fuel relay stopped working  :johnny

Jokes aside, does anyone have a used one for sale or know where I can get one that is reasonably priced? I have a hard time justifying paying $50 for a relay, but maybe that's just me being cheap and used to regular truck relay pricing

Any help would be appreciated!
  • San Marcos, TX
  • 1990 K100 Custom Scrambler

Offline daveson

  • ^ Quintessential Motobricker
  • Posts: 1268
Re: WTB Fuel Pump Relay
« Reply #1 on: July 01, 2025, 04:01:19 PM »
You might have a junk yard nearby that has a web site stating which models they have in their yard. If they have a few BMW cars and you pop a few hoods there, you will probably find a few light green, five pin relays, which will work well. There's a photo in the following link.

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=http://www.motobrick.com/index.php%3Ftopic%3D10840.0&ved=2ahUKEwih2Z26t5yOAxVGV2wGHQk_OKwQFnoECBcQAQ&usg=AOvVaw1zWHRWLu5Bh5y28_flZwgH

  • Victoria, Australia
  • Current; '85 K100RT~100,000km; four other bricks. Past; Vulcan 1500, V Star 650, KLX 250(dirt bike) TT250(dirt bike)

Offline frankenduck

  • Adrninistrator
  • ^ Quintessential Motobricker
  • Posts: 5511
Re: WTB Fuel Pump Relay
« Reply #2 on: July 02, 2025, 12:01:58 AM »
it's a common item also used in cars

Tyco part # is V23134-K59-X312

https://www.amazon.com/s?k=V23134-K59-X312
Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
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Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6843
Re: WTB Fuel Pump Relay
« Reply #3 on: July 02, 2025, 08:11:40 AM »
Take the old one to an auto parts store.  The counterman can match it.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline RetroTexan

  • ^ Motobrick Curious
  • Posts: 61
Re: WTB Fuel Pump Relay
« Reply #4 on: July 02, 2025, 09:40:14 AM »
You might have a junk yard nearby that has a web site stating which models they have in their yard. If they have a few BMW cars and you pop a few hoods there, you will probably find a few light green, five pin relays, which will work well.

Love this idea, daveson. Thanks! There's a pick-n-pull yard in the next town over that I'll check today.

I'm fortunate to have 4 auto parts stores within a block of each other and I went to all of them looking for a more economical replacement. Unfortunately, no-go. But I appreciate the suggestions
  • San Marcos, TX
  • 1990 K100 Custom Scrambler

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