Description

This comprehensive kit is an essential solution for a complete rejuvenation of your oil / water pump, ensuring the optimal performance and longevity of your engine. It is designed for pumps requiring a specific oil pump shaft with 19 teeth, making it a precise and reliable choice for your maintenance needs.

Included in this kit are the following high-quality components:

• 11111460392 - O-Ring
• 11411460329 - Shaft Seal
• 11411461793 - Shaft Z=19
• 11411741870 - Slip Ring Seal
• 07119919112 - Drain Plug
• 11411460328 - Pump O-ring
• 11411460483 - Screw Plug
• 12311460853 - Impeller Bolt
• 11411461173 - Impeller
• 11511464902 - Spacer Bush

Before making your purchase, it is crucial to inspect your existing pump to determine the specific gear model you require. Please be aware that the housing may vary depending on the gear model, and this kit is tailored to the specified 19-tooth oil pump shaft. With this kit, you can have confidence in the reliability and performance of your pump, helping to maintain the integrity of your engine's oil and water systems.

Found on the following models:

• K589 (K 1100 RS, K 1100 LT)   (06/1989 — 04/1999)
• K589 (K 1200 RS, K 1200 LT)   (04/1996 — 07/2008)
• K41 (K 1200 GT, K 1200 RS)   (03/2000 — 07/2005)
• K589 (K100, RS, RT, LT)   (05/1982 — 10/1991)
• K569 (K 75, K 75 C, K 75 S, K 75 RT)   (12/1984 — 06/2005)

• Rebuilding the oil/water pump on a BMW K is important for several key reasons:

  1.

  Prevent Coolant and Oil Leaks

  The oil/water pump on the K100 is a combined unit that manages both engine oil circulation and coolant flow. Over time, the internal seals—especially the shaft seal between the oil and water sections—can wear out. If the seal fails, coolant can mix with oil, or oil can leak into the cooling system, leading to serious engine issues.

  2.

  Avoid Cross-Contamination

  The K100 has a weep hole between the oil and water sides to let you know if one of the seals is failing. If you see oil or coolant coming from the weep hole, it’s a clear sign the pump needs attention. Letting it go too long could result in cross-contamination, which can ruin bearings or lead to overheating.

  3.

  Improve Reliability

  This is a 1980s/1990s bike, and many K100s still on the road are running with original or aged components. Rebuilding the pump refreshes critical seals, bearings, and impellers, restoring performance and reliability, especially if you’re planning long rides or touring.

  4.

  Prevent Overheating or Oil Pressure Issues

  A worn or damaged pump can cause cooling inefficiency or reduced oil pressure, both of which can lead to overheating or even engine failure.

  5.

  Cost-Effective Maintenance

  Rebuilding the pump is usually cheaper than waiting for a catastrophic failure that damages the engine. Kits are available, and many DIY riders handle the rebuild themselves.

  If you’re noticing leaks, odd oil/coolant behavior, or it’s just been decades since it was touched, it’s smart preventive maintenance to rebuild