Original BMW Crankcase Vent Valve Seal Adapter for BMW 750iL, 850i, 850Ci, and 850CSi V12 (1988–1995)

On the V12 BMW 750iL, 850i, 850Ci, and 850CSi built from 1988–1995, this Original BMW adapter is the seal for the crankcase vent valve where it meets the valve cover. BMW names it simply Adapter under part number 11-15-1-715-844, and the store sells it as the valve cover vent grommet. BMW shows production starting in June 1987. It is sold individually and made in Slovenia. Every crankcase ventilation system routes blow-by gas from inside the engine back into the intake to be burned. Any seal along that path has to keep the connection tight so the system draws gas only through its intended passages.

Original BMW Parts carry a 24-month parts warranty.

BMW uses this one adapter across the M70 and S70 V12 engines. It appears on the E32 750i, 750iL, and 750iLS with the M70, on the E31 850Ci with the M70, and on the E31 850CSi with the S70. The 850i also takes this seal. The 850CSi with the S70 uses it as well. BMW's parts data shows no superseding number. The 11-15-1-715-844 part produced since 1987 is still the current one.

Technical Details

• Manufacturer: BMW (genuine part)
• Part number: 11-15-1-715-844
• BMW part name: Adapter
• Function: crankcase vent valve seal
• Engines: M70 and S70 V12
• Production start: June 1987
• Country of manufacture: Slovenia
• Sold as: one piece
• Warranty: 24-month parts warranty

Common Questions

Does the 850CSi use a different seal from the 850Ci?
No. BMW uses this same adapter on both the M70-engined 850Ci and the S70-engined 850CSi.

Is this sold as a pair for both cylinder banks?
No. It is sold as a single piece, so order the quantity your engine requires.

Fitment & Compatibility

Compare your production year and trim against the table below. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.