The Patented STENTFIX Coolant Pipe Repair System is a fast and less expensive way to repair a Coolant Transfer Pipe leak in a BMW® N74 engine.  This popular N74 V12 engine was used in BMW's flagship 760i (F01), 760Li (F02), 760Li high security(F03), M760Li xDrive (G12) and the BMW M760Li xDrive (G12 Facelift).

The Front Seal on this BMW® Coolant Transfer Pipe can fail in as little as 40,000 miles.  The repair on this internal engine seal requires many hours of labor and can cost THOUSANDS OF DOLLARS!!!

A leaking Front Seal on a Coolant Transfer Pipe of the BMW® V-12 N74 engine is a common problem that is very expensive to repair. Once the engine is installed in the vehicle, it is very expensive to remove the Timing Chain Cover, in order to be able to install a new factory made BMW® Coolant Transfer Pipe (aka BMW® Crossover Pipe) through the front of the engine.

A new method has developed, which involves accessing the N74 Coolant Transfer Pipe by removing the Intake Manifold.  Once the Intake Manifold has been removed, then the old Coolant Transfer Pipe can be cut-out of the inside of the engine block, and a new "EXPANDABLE COOLANT TRANSFER PIPE" is installed in it's place.  There are several companies who manufacture these N62 Expandable Coolant Transfer Pipes.  This is the most commonly used method of repairing a leaking BMW® Coolant Transfer Pipe because it is cheaper and faster to remove the Intake Manifold, than the original factory method of removing the N74 Timing Chain Cover.

The problem with both of these methods is that the Front Seal on both the factory installed Coolant Transfer Pipe, and the after-market "Expandable Transfer Pipe" could eventually LEAK AT THE SAME PLACE AGAIN in the future.  The BimmerFix® Stent offers a MORE DURABLE METHOD of repairing a leaking Front Seal on a Coolant Transfer Pipe, that is also much less expensive to install.  The seal created by the BimmerFix® Stent is more durable because it is made of high-strength aluminum alloy that is made of a similar alloy as the BMW® engine.   The BimmerFix® Stent actually provides a METAL LINER and bonds to the Coolant Transfer and Timing Chain Cover, using the special high-temp BimmerFix® Coolant Pipe Sealant.  This Sealant is able to be continuously immersed in antifreeze, and can withstand temperatures up to 500 degrees Celsius. .  The labor to install the BimmerFix® Stent is only one hour more shop time than is required to replace the Water Pump.  In fact, we recommend that a new Water Pump be installed when installing the BimmerFix® Stent. And, vise-versa, we recommend that a BimmerFix® Stent is installed in a vehicle when the Water Pump is being replaced.  This is an inexpensive preventative measure which could help to prevent future failure of the Front Seal of the Coolant Transfer Pipe.