06L115251E 06L115251AC 06L115251S Engine Oil Pump Suction Line for AUDI A6 and AUDI Q5: Diagnosis and OE Fitment Guide

QUICK ANSWER

A confirmed cracked, deformed, loose or restricted oil-pump suction line should be confirmed through physical inspection and the workshop checks appropriate to this component before a replacement part is ordered. The same symptom can have more than one cause, so compare the installed component, all OE references, connections and vehicle information.

WHAT THIS PART DOES

The Engine Oil Pump Suction Line draws engine oil from the sump-side pickup path and delivers it to the oil pump through a sealed inlet connection. Its role does not prove that it is the cause of a customer complaint; diagnosis must connect the observed fault to this component.

SYMPTOM SNAPSHOT

• Red oil-pressure warning appears while the engine is running
• Mechanical oil-pressure testing confirms pressure below the applicable specification
• Suction-line body, pickup housing or mounting point is visibly cracked, deformed or loose
• Debris, sludge or excess sealant is found restricting the suction opening or oil path
• Inlet seal is damaged and an air-leak path at the pump connection is confirmed during inspection

These symptoms are diagnostic clues, not a guarantee that this part has failed.

DIAGNOSIS BEFORE ORDERING

1. Stop the engine immediately if a red oil-pressure warning appears and do not continue driving
2. Verify engine-oil level, condition and specification before further diagnosis
3. Measure oil pressure with approved equipment and compare the result with the applicable engine procedure
4. Remove the sump only according to the repair procedure, then inspect the suction line, inlet seal, pickup opening, separate strainer, pump, drive and pressure-control components
5. Check for bearing material, sludge, excess sealant or other contamination and identify its cause instead of replacing only the suction line
6. Compare the complete housing shape, tube length, inlet diameter, mounting points, seal, pump revision, engine code, production date and every OE suffix before ordering

OEM REFERENCE

• 06L115251E
• 06L115251AC
• 06L115251S

Every verified OE reference from the product record is retained. Revision letters and alternate numbers must not be discarded during comparison.

VEHICLE APPLICATION REFERENCES

• AUDI A6
• AUDI Q5

Model names are reference points only. Production date, engine, market specification and connector changes can affect compatibility.

WHEN REPLACEMENT IS JUSTIFIED

Replacement is reasonable when inspection or workshop testing confirms damage or a functional failure that matches the role of this component. If the evidence conflicts with the product function, continue diagnosis instead of replacing the part.

RELATED PARTS TO INSPECT

• Separate oil strainer 04E115175A or 04E115175B where specified
• Oil pump, drive chain, cover and pressure-control components
• Suction-line inlet seal and oil-pump mating bore
• Engine oil, sump contamination, bearing debris and excess sealant
• Oil-pressure switch or sensor, wiring and confirmed mechanical pressure

VIN CHECK

Confirm fitment using OE number and VIN before ordering.

For fitment questions, share the OEM part number, VIN number, or vehicle information with our team before ordering.

CHECK THE PART AND OE DETAILS

Review 06L115251E / 06L115251AC / 06L115251S product images and fitment details.

WORKSHOP AND BULK ORDERS

Repair shops and distributors can send an OE list, quantities and vehicle information for fitment review and bulk-order support.