1998-2002 BMW 740i Engine Valve Cover Gasket Set Replacement
Stop the burning oil smell and prevent engine damage by replacing your leaky M62 valve cover gaskets.
- A burning oil smell and visible leaks on the engine are the most common signs of failure.
- Choose a quality aftermarket brand like Elring or Reinz, as they are often OEM suppliers for BMW.
- Always replace the complete set, including the main gaskets, spark plug tube seals, and all 22 bolt grommets.
- This is an advanced DIY job; professional installation is recommended if you are not an experienced mechanic.
Is Your 740i Leaking Oil? Signs of a Bad Valve Cover Gasket
A leaking valve cover gasket is one of the most common oil leaks on the E38 740i. The symptoms usually start small but get worse over time. Ignoring them can lead to more serious problems.
Common Symptoms:
- Burning Oil Smell: This is often the first sign. Oil drips from the valve covers onto the hot exhaust manifolds, creating a distinct burning smell that you may notice inside the cabin, especially when you're stopped.
- Visible Oil Leaks: You may see wet, oily residue or grime collecting on the valve covers or running down the sides of the engine. On the M62 V8, these leaks can be near the front or back of the engine.
- Smoke from Engine Bay: In more advanced leaks, you might see light smoke coming from under the hood after a drive as the oil burns off the hot exhaust.
- Engine Misfires: The gasket set includes seals for the spark plug tubes. When these fail, oil can fill the spark plug wells, fouling the spark plugs and ignition coils. This can cause a rough idle, hesitation, and a Check Engine Light.
- Low Oil Level: A persistent leak will cause your engine oil level to drop over time, potentially triggering the low oil warning light.
Don't Mistake Other Leaks
Oil leaks can be tricky. A leak from the upper timing cover gaskets on the M62 engine can look very similar to a valve cover gasket leak. It's important to clean the engine and find the highest point of the leak to correctly identify the source before buying parts. Using a UV dye kit can also help pinpoint the exact location 🎬 Check out these essential tips before starting your replacement. of the leak.
Choosing the Right Aftermarket Gasket Set
For the 1998-2002 740i, you don't necessarily need to buy a genuine BMW part to get a quality seal. Several aftermarket brands are known to be original equipment manufacturers (OEM) or offer equivalent quality.
Brand Quality Tiers:
- Elring & Reinz (Victor Reinz): Both Elring and Victor Reinz are well-regarded German brands that often supply parts directly to BMW. For a critical seal like the valve cover gasket on the M62 engine, choosing one of these brands is a reliable option that balances cost and quality. Many professional mechanics and experienced owners trust them for a durable, long-lasting seal.
- Beck Arnley: Beck Arnley is a parts reseller, not a manufacturer. They source their parts from various suppliers, which often include OEM brands like Elring or Reinz. While generally a good quality option, the part you receive in the box could be from any of their sources.
Pro Tip: The complete gasket set should include two main valve cover gaskets (left and right), seals for the spark plug tubes, and 22 bolt grommets/washers. It is critical to replace all these components at the same time for a complete, leak-free job.
| Brand Tier | Estimated Price Range |
|---|---|
| Elring / Reinz | $70 - $160 |
| Beck Arnley | $60 - $140 |
| Other Aftermarket | $39 - $70 |
Frequently Asked Questions (FAQ)
What else should I replace at the same time?
While you have the valve covers off, it's a perfect time to inspect and potentially replace your spark plugs and ignition coil boots, especially if they have been contaminated with oil. You should also replace all 22 of the rubber bolt grommets that come with the kit, as the old ones will be hard and brittle.
Is this a good DIY job for a beginner?
This job is considered advanced for a DIYer. It requires patience and careful work in tight spaces, especially on the V8 engine. You'll need a 10mm socket, extensions, and a torque wrench. Removing some components to access the valve covers can be tricky. If you are not comfortable, it's best to leave this to a professional.
🎬 Watch a complete step-by-step guide for this DIY repair.Do I need to use sealant on the new gaskets?
Yes, a small amount of sensor-safe RTV sealant is required. You should apply it at the sharp corners where the timing covers meet the cylinder head to prevent leaks in these critical areas.
🎬 See exactly where to apply sealant during the installation process.Are there any recalls for this issue?
No, there are no specific recalls from the NHTSA for leaking valve cover gaskets on the 1998-2002 BMW 740i. Oil leaks are generally considered a maintenance issue unless they pose a direct safety risk.
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Technical Specifications
OEM Part Numbers: 11129071589 11129071590 11121437395
Kit includes two valve cover gaskets (left and right), spark plug tube seals, and 22 bolt grommets. Designed for the BMW M62 V8 engine.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW 740i: