MITZONE N55 Engine Valve Cover Kit with Gasket & Oil Cap - Durable Fit

In this review the MITZONE N55 Engine Valve Cover Kit is assessed for DIY mechanics and BMW owners needing a complete replacement solution. The kit's single biggest reason to buy is its all-in-one nature: a pre-installed valve cover with gasket, spark plug tube seals, bolts, and an oil filler cap that simplifies installation and reduces the chance of missing parts. It targets N55 3.0L applications and related models where valve cover leaks are a common repair, offering a direct-fit alternative built to match OE quality expectations.

Key Features

• Complete kit: Includes the new engine valve cover, gasket, three spark plug tube seals, bolts, and an oil filler cap so installers get everything needed in one package.
• Wide vehicle compatibility: Fits many BMW models using the N55 platform and related engines, reducing the risk of ordering the wrong part for common 3.0L and other compatible applications.
• Pre-installed components: Valve cover comes with bolts and seals pre-installed to make alignment and assembly faster for experienced installers and knowledgeable DIYers.
• Durable construction: Made to meet or exceed OE standard quality for sealing and longevity, aiming to prevent future leaks and protect the engine bay.
• High sealing performance: Designed gasket and tube seals help stop oil seepage around spark plug wells and the valve cover perimeter to protect ignition components.

Who It's For

This kit is best suited to BMW owners, independent mechanics, and experienced DIYers working on N55 3.0L engines and many related BMW models listed in the compatibility notes. It is particularly useful for those who want a single, ready-to-install unit that includes the oil cap and spark plug tube seals, minimizing trips for missing components.

Shoppers who prefer factory branded parts or need a guaranteed dealer-specific assembly with original packaging may prefer to source an OEM unit. Less experienced installers who are uncomfortable aligning bolt holes or verifying fit may also want professional installation to avoid alignment issues some users reported.

Pros & Cons

Pros

• Comprehensive package saves time by supplying gasket, bolts, tube seals, and oil cap together.
• Good overall fit for many BMW models based on the listed compatibility and customer reports of good fit and value for money.
• Constructed to match OE sealing performance to reduce leaks and protect the engine.

Cons

• Some customers reported mixed assembly quality and occasional missing small items such as the oil filler cap or ball sockets, so parts should be verified on receipt.
• A few users experienced bolt alignment challenges during installation, which may require minor adjustments or professional help.

Specifications

Brand	MITZONE
Part type	Engine valve cover kit
Kit contents	Valve cover, gasket, 3 spark plug tube seals, bolts, oil cap
Primary fitment	N55 3.0L and compatible BMW models (see compatibility list)
Compatible models (examples)	335i, 535i, 535i GT, X3, X5, X6, 740i (year ranges in product listing)
Performance focus	High sealing performance to prevent oil leaks

Our Verdict

The MITZONE N55 valve cover kit is a practical, value-focused replacement for BMW owners facing valve cover leaks on N55 and related engines. It delivers a complete package that reduces missing-part headaches and aims to match OE sealing standards, making it a sensible, cost-effective option for competent DIYers and independent shops, provided buyers inspect the kit on arrival and are prepared to address minor fitment touches during installation.

Frequently Asked Questions

Is this a full replacement kit?
Yes. The package includes the valve cover, gasket, three spark plug tube seals, bolts, and an oil filler cap as shown in the product images.

Will it fit my BMW 335i or X5?
It fits many 2010-2019 BMW models listed for N55 and related engines; verify year and engine code against the compatibility list before ordering.

Are there common installation issues?
Some users noted bolt alignment and occasional missing small parts; inspect components on delivery and consider professional help if alignment is difficult.