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11111318185 - Constant Pressure Valve for E46 M3, MZ3 (S54), and Z4 M

Constant Pressure Valve for E46 M3, MZ3 (S54), and Z4 M

Genuine BMW

T#: 2027 | Part#: 11111318185

Part#: 11-11-1-318-185

Part#: 11 11 1 318 185

Part#: 11.11.1.318.185

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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$50.99

4% off MSRP:

$52.91

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

Lifetime Replacement

Availability:

In Stock

Est. Ship Date:

on Jul 6, 2026

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Product Details

Oil leak on the E46 M3? The constant pressure valve, or oil pressure relief valve, is the most likely reason. This screw valve, located on the rear of the engine block behind the #2 header, has an o-ring that becomes flat over time, allowing oil to leak around it and down the back of your engine, transmission, undertray, and eventually to your driveway. If you see an oil leak around your transmission and think it's the rear main seal or from the oil pan, try replacing this first. Replacement is the only remedy as the o-ring is not available separately from BMW. This is an Original BMW part. One required.

Applications:
1993-1999 Euro E36 M3 (S50 Euro, S52 Euro engine)
2001-2002 MZ3 M Roadster, M Coupe (S54 engine)
2001-2006 E46 M3, E46 M3 CSL
2006-newer E85 Z4 M Roadster, E86 Z4 M Coupe

Prop 65 Warning

Cross Reference

CPV
11111318185, 11-11-1-318-185, 11 11 1 318 185, 11.11.1.318.185
11111318185, 11-11-1-318-185, 11 11 1 318 185, 11.11.1.318.185
11111318185, 11-11-1-318-185, 11 11 1 318 185, 11.11.1.318.185

Product Q&A

Lifetime Replacement

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

Fits These Cars

MAKE	MODEL	SUBMODEL	ENGINE	Special Fitment Notes
BMW	E46	M3	S54 3.2L	Use vehicle selector to confirm fitment
BMW	Z3	M Coupe	S54 3.2L	Use vehicle selector to confirm fitment
BMW	Z3	M Roadster	S54 3.2L	Use vehicle selector to confirm fitment
BMW	Z4	M Coupe	S54 3.2L	Use vehicle selector to confirm fitment
BMW	Z4	M Roadster	S54 3.2L	Use vehicle selector to confirm fitment

*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.