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2004-2010 BMW X5 4.4i and 4.8i V-8 N62 Coolant Transfer Pipe Repair – Permanent Fix with BimmerFix
If you drive a 2004-2010 BMW X5 with the 4.4i or 4.8i V-8 N62 engine, consider your X5 indispensable, as it is one of the most popular and practical BMWs ever made. However, you may also be aware of the internal engine leak caused by a leaking Coolant Transfer Pipe inside the BMW 4.4- and 4.8-liter V-8 engines. This issue is widespread among the 2004, 2005, and 2006 BMW X5 (E53) with the 4.4i and 4.8iS V-8 engines. The same internal engine Coolant Transfer Pipe leak is also found in the 2007, 2008, 2009, and 2010 BMW X5 (E70) with the 4.8 V-8 N62 engine.
BMW 4.4i and 4.8iS V8 N62 Engine
This internal engine leak appears behind the Water Pump, and Antifreeze leaks from a small “weep Hole” (at about the 9 o’clock position behind the Water Pump, if you are standing in front of the engine) in the Timing Chain Cover behind the Water Pump. The leak is caused by the failure of the rubber seal bonded to the end of the Coolat Transfer Pipe. The repair is costly and labor-intensive using the original BMW repair process, which could cost over $13,000.00 USD. However, there's a more innovative, more permanent solution: the BimmerFix Coolant Pipe Repair System. Designed with performance, durability, and ease of installation, BimmerFix is the trusted solution for enthusiasts and technicians.
Common Coolant Transfer Pipe Issues in BMW X5 (N62 Engine)
The original OEM Coolant Transfer Pipe runs beneath the intake manifold and is made from aluminum with a rubber seal bonded to one end of the Coolant Transfer Pipe.
Over time, extreme heat cycles and coolant pressure cause the pipe’s bonded rubber Seal to degrade, leading to:
- Coolant leaks coming from the “Weep Hole” in the Timing Chain Cover behind the Water Pump
- Overheating of the BMW 4.4i and 4.8iS V8 N62 engine.
- Long-term engine damage if left unresolved
What makes it worse? Accessing and replacing this pipe using BMW’s standard repair method involves removing the engine or lifting the body off the frame—an 18–22-hour job that can cost upwards of $10,000 at the dealership.
Symptoms of a Failing Coolant Pipe in X5
Early diagnosis can prevent severe engine issues. Here’s what to watch for:
- Low coolant warning light
- Visible coolant under the vehicle
- Engine overheating
- Steam or a sweet smell (from leaking antifreeze)
- Antifreeze leaks from the “Weep Hole” behind the Water Pump
If you’re experiencing one or more of these issues in your N62-powered X5, it’s highly likely the factory coolant pipe has failed or is about to.
Why BMW’s OEM Solution Falls Short
The OEM repair involves replacing the coolant transfer pipe with another flawed part. To remove the very long Coolant Transfer Pipe, the BMW dealer will remove the engine from the vehicle, allowing the Timing Chain Cover to be removed and the new OEM Coolant Transfer Pipe to be installed into the engine block. The engine is then reinstalled into the vehicle. Even after the costly and invasive job, you’re still at risk of a repeat failure in the future. Here's what makes the standard solution inefficient:
- High labor cost: Requires major disassembly
- Minimal long-term reliability: Same design flaw remains
- No performance advantage: Simply restores the original status quo
- Time-consuming downtime: Your vehicle could be in the shop for days
Why the after-market “Expandable Coolant Pipe” is not a good option.
A second option for repairing the leaking Coolant Transfer Pipe is to replace the original BMW OEM Coolant Transfer Pipe with an After-Market “Expandable Coolant Pipe”. This second method offers advantages over the original BMW OEM method because the engine does not need to be removed from the vehicle. Only the Intake Manifold and Valley Pan need to be removed. Then, the BMW OEM Coolant Transfer Pipe is cut out of the inside of the engine block. Several companies make these Expandable Pipe Options, including: BimmerPipe, All German Auto Pipe (AGA Pipe), URO Pipe.
The problem with the after-market Expandable Pipe option is that removing the Intake Manifold and Valley Pan is expensive. In addition, these aftermarket expandable pipes can fail in the same location and start leaking from the Weep Hole again.
BimmerFix: Save Time and Money with the BimmerFix Coolant Pipe Repair Kit.
GET A LIFETIME WARRANTY WITH BIMMERFIX! (See Warranty Page for details)
With the Patented BimmerFix Coolant Transfer Pipe, only the Water Pump must be removed to install the BimmerFix Stent and permanently stop your Coolant Transfer Pipe leak.
We recommend replacing the Water Pump when you install the BimmerFix Stent.
Engineered for the BMW X5
The BimmerFix Coolant Pipe Repair System was engineered to solve the N62 coolant pipe problem once and for all—without engine removal and without using flawed OEM components.
Key Benefits:
- Permanent solution: Made from aircraft-grade aluminum with durable O-rings designed to outlast your engine.
- No engine removal: No need to remove the valley pan, or the intake manifold —saving you thousands in labor. You only need to remove the Water Pump to install the BimmerFix Stent.
- Precision fit: Specifically designed for BMW N62 engines in X5, 7-Series, and more.
- Heat-resistant and pressure-proof: Built to handle the N62 engine’s extreme operating conditions.
Whether you're a DIY mechanic or a professional technician, BimmerFix empowers you to get the job done efficiently—and right the first time.
Installation Overview for the X5
Installing the BimmerFix Coolant Pipe Repair System is significantly less invasive than the OEM procedure. Here’s a quick overview of what to expect:
Step-by-Step Summary:
Go to https://bimmerfix.com/pages/installation-video for step-by-step installation instructions of the BimmerFix Coolant Pipe Repair System.
Installation time: 3 to 5 hours, compared to 18+ hours for OEM pipe replacement.
A detailed installation guide and video tutorial are included with every order, and our tech support is just a call or email away.
Customer Reviews & Real-World Success Stories
To be honest, I was a bit skeptical about the Bimmerfix Stent solution to the well-known Weep Hole leak problem on my X5 E70 2008 N62, but rather than just go with the traditional solution decided to give it a shot to save a few thousand dollars. The result was outstanding, no leaks whatsoever!!! I highly recommend it, just make sure to ask your mechanic to religiously follow the instructions and to also respect the 24-hour curing time of the sealant!
Frank Fung
2008 BMW X5 4.8
I had 2 mechanics look at the issue, both came to the same conclusion: Replace the engine or get rid of the BMW. I was fortunate to come across the Bimmerfix website while I was looking for some options. I ordered the kit, and received it in 2 days. I had one of the mechanics do the job; he followed the instructions and told me it was pretty straightforward. We did the water pump while doing the job. The job all in cost me $850.00, including the water pump. It's been about 2 months since the repair, and I haven't had any issues. I would highly recommend trying this product to anyone having this coolant leak issue.
Jim Arnold Boston, Ma
The system is trusted by hundreds of technicians, independent shops, and BMW owners who were tired of temporary solutions.
Order BimmerFix for Your BMW X5
Ready to save thousands of dollars and permanently fix your coolant leak?
Compatible BMW X5 Models (N62 Engine):
- X5 (E70)
- X5 (E53)
- Any BMW using the N62 4.4L (2001 – 2010)
Why Choose BimmerFix?
- Permanent, one-time repair
- Proven track record
- Precision fit for BMW X5 with N62
- Avoid costly dealership labor
- Trusted by professionals worldwide
Take Control of Your Coolant System
Stop leaks before they become engine-destroying disasters. The BimmerFix Coolant Pipe Repair System is the trusted choice for BMW enthusiasts, independent mechanics, and professionals who value performance and peace of mind. Don't pay $13,000 for a temporary fix. Install BimmerFix and get a Lifetime Warranty for as long as you own your car.