X4XZ Double Iridium Spark Plugs 9029 – 4-Pack for Nissan Altima Rogue Sentra, Long-Life High-Performance

The X4XZ 9029 double iridium spark plug is a direct-fit replacement designed to restore reliable ignition, smoother idling, faster starts and longer service life for compatible Nissan, Infiniti and select Chevy models.

These double iridium plugs meet OE# 9029 specifications and are manufactured to match or exceed original equipment fit and function. Built with a durable iridium center electrode and precision-ground firing tip, each plug aims to deliver consistent sparks over extended mileage. The set contains four plugs and comes with a one-year product service and responsive customer support to help with fitment or installation questions.

Which vehicles does this 9029 spark plug fit?

This plug is engineered to fit a wide range of Nissan and Infiniti models and certain Chevy platforms that specify OE# 9029. Compatibility spans popular model years and engine variants, but always confirm the part number and plug appearance against your vehicle before purchase.

• Nissan: Altima 2007–2015, Cube 2009–2014, NV200 2013–2017, Rogue 2008–2015, Rogue Select 2014–2015, Sentra 2007–2016 (1.8L/2.0L/2.5L variants), Versa 2007–2012 (1.6L/1.8L), Urvan 2010–2013 2.5L.
• Infiniti: FX50 2009–2013, M56 2011–2013, Q70 2014–2015, QX60 2014–2015.
• Chevrolet: City Express 2015–2017 2.0L.
• Please compare with the second main product image to verify plug tip and thread match your vehicle.

How does double iridium improve ignition performance?

Iridium offers higher melting point and greater wear resistance than conventional electrodes, which keeps the firing tip sharp and the spark consistent for longer intervals. That improved ignitability helps the engine start more readily, respond better to throttle input and sustain stable idle under a variety of conditions.

• Precision-ground iridium center electrode for stable, concentrated sparks.
• Extended service life—designed to perform up to 100,000 kilometers under normal use.
• Reduced misfires and smoother acceleration compared with worn standard plugs.

Are these plugs easy to install and do they match OE specifications?

The X4XZ 9029 plugs are manufactured to match OE dimensions and thread specifications, enabling straightforward swap-in replacement. No special machining or adaptation is required for vehicles that originally used OE# 9029; basic hand tools and proper torque are all that’s needed for a safe installation.

• OE reference: 9029—designed for direct replacement on compatible engines.
• Package includes four spark plugs; no instruction manual included but simple for DIY or a mechanic.
• Each plug follows OE-style electrode layout to maintain firing geometry and clearance.

What kind of after-sales support and warranty is provided?

X4XZ offers customer service support and a one-year product service to address quality or installation concerns. Their support team can help confirm vehicle compatibility or troubleshoot common installation questions so you get the correct fit and performance.

• 24-hour customer service availability for product or fitment inquiries.
• One-year product service for manufacturing defects or early failures.
• Contact support before returning to clarify fitment or installation steps.

Who is this for: Drivers seeking a long-lasting, OE-style replacement spark plug for mid-2000s to late-2010s Nissan and Infiniti vehicles (and compatible Chevy City Express models) who want improved cold starts, steadier idling and reduced maintenance frequency. Suitable for DIY mechanics and professional technicians who need a reliable set of four plugs specified to OE# 9029.