MITZONE Engine Valve Cover Set for Nissan/Infiniti VQ35DE 3.5L (2002–2007) — Complete Kit with Gaskets, Bolts & Oil Cap

Complete replacement valve cover kit for Nissan VQ35DE 3.5L engines, including front and rear covers, gaskets, bolts, oil cap, spark plug tube seals and PCV cover for a secure, leak-resistant seal.

This MITZONE engine valve cover set is made to match the early VQ35DE Nissan 3.5L engine fitments found on Altima, Maxima, Murano, Quest and Infiniti I35 model years listed. The kit is intended to replace worn or cracked covers and all the associated seals and hardware so you can reinstall properly without hunting down separate parts. Parts are mapped to common OEM numbers so you can verify compatibility before purchase.

Will this kit fit my Nissan or Infiniti VQ35DE engine?

Check your vehicle year, model and engine code against the product fitment list: 2002–2007 Nissan Altima/Maxima/Murano, 2004–2009 Quest, and 2002–2004 Infiniti I35 with the 3.5L V6 (VQ35DE). This set is year- and model-specific, so visual or VIN verification is recommended.

• Compatible models: Nissan Altima, Maxima, Murano, Quest and Infiniti I35 with VQ35DE
• Years covered: mainly 2002–2007 (see full listing for exact year ranges)
• OEM cross-reference: replaces common part numbers like 13264-7Y010, 13264-8J113, 264-985 and related numbers
• Recommendation: compare your existing cover shape and bolt pattern to product photos

What does the kit include and why is that useful?

The MITZONE set supplies both front and rear valve covers plus all necessary gaskets, spark plug tube seals, mounting bolts, an oil filler cap and the PCV cover. Having every part in one package streamlines the replacement process and cuts the risk of missing small components during installation.

• Front and rear valve covers matched to original profiles
• Complete gasket set and plug tube seals for a proper leak-free assembly
• Mounting bolts and oil cap so you can reinstall immediately
• PCV cover included to restore proper ventilation components

How durable and leak-resistant are these valve covers?

These covers are manufactured to withstand typical under-hood heat and vibration seen on early VQ35DE engines and are designed to resist oil seepage when installed with the supplied gaskets and seals. Proper torque and installation of the provided hardware are important to achieve a long-lasting seal.

• Made for high-temperature engine bays and repeated thermal cycles
• Comes with new gaskets and spark plug tube seals for improved sealing
• Supplied bolts ensure correct fastener length and engagement
• Follow OEM torque specs during installation for best results

Can I install this kit myself or should I use a mechanic?

If you have basic mechanical skills and common hand tools, replacing valve covers with this kit is a straightforward job for a DIYer comfortable with engine work. However, if you are unsure about torque specs, PCV routing, or cleaning mating surfaces, a professional installation will reduce the chance of leaks or damage.

• DIY-friendly: includes all parts to complete the job in one visit
• Requires basic tools, gasket scraper, and torque wrench for best results
• Professional help recommended if you lack engine maintenance experience
• Always clean mating surfaces and follow torque sequence to prevent distortion

Who this is for: This MITZONE valve cover set is aimed at owners and technicians working on early VQ35DE-equipped Nissan and Infiniti vehicles who want a complete, matched replacement package. It’s ideal for those replacing leaking or damaged covers and for anyone performing a tune-up who prefers a single, OEM-referenced kit that includes all seals, bolts and the oil cap.