BMW 11511315563, written as 11 51 1 315 563, is a Genuine BMW water-pump reference for the E34 M5 S38. Specialist BMW sources now explicitly state that BMW discontinued this pump for the E34 M5 application. See the E34 M5 11511315563 reference.
That does not mean there is literally no water-pump solution for every S38 car. Aftermarket products and rebuild strategies can exist. It means the original BMW pump itself is no longer an ordinary new factory part.
BMW 11511315563 at a glance
| Item | Verified detail |
|---|---|
| BMW article number | 11511315563 |
| Component | Mechanical engine water pump |
| Vehicle | E34 M5 |
| Engine family | S38 application |
| Genuine BMW supply | Discontinued |
Why S38 parts become difficult
The E34 M5 was produced in much smaller numbers than mainstream E34 models, and the S38 uses many engine-specific components. That means an ordinary E34 parts search can return components that are completely wrong for the M5.
Do not combine different S38 pump numbers casually
BMW used different application references across S38 variants and markets. This article deliberately targets 11511315563 only. Do not assume another S38 pump number is automatically equivalent or equally unavailable.
Aftermarket alternatives
Some aftermarket catalogues currently list replacement pumps for portions of the E34 M5 range. That is useful, but the presence of an aftermarket cross-reference does not eliminate the need to check S38 version, production date and dimensions.
Rebuild the original?
When the genuine housing is correct and structurally sound, professional rebuilding can be an attractive strategy. Keep the original pump even after removal.
- Inspect housing condition.
- Check bearing and shaft wear.
- Inspect impeller condition.
- Check sealing surfaces.
- Record BMW markings.
- Compare replacement geometry before installation.
Searching for an E34 M5 S38 part?
Use the exact OEM reference, engine version and VIN when searching BMW engine and cooling inventory internationally.
Frequently Asked Questions
What is BMW 11511315563?
It is a genuine BMW mechanical water-pump reference for the E34 M5 S38.
Has BMW discontinued 11511315563?
Yes. Specialist BMW sources explicitly state that BMW discontinued the pump for the E34 M5 application.
Does that mean no replacement pump exists?
No. Aftermarket or rebuild options may exist. Genuine BMW discontinuation and complete market unavailability are not the same statement.
Can I install an ordinary E34 six-cylinder pump?
Do not assume that. The S38 M5 application must be verified specifically.
Should I rebuild the original pump?
It can be a strong option if the original housing is in rebuildable condition.
Should I keep an old leaking S38 pump?
Yes. A genuine correct core can become increasingly valuable as original supply disappears.
What should I verify before ordering an aftermarket pump?
Exact S38 engine version, production date, OEM cross-reference, pulley/flange geometry and physical dimensions.
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