X4XZ Ignition Coil Pack & 4 Double Iridium Spark Plugs UF620+4504 for Chevy Cruze 2011–2015 — OE Fit, Long-Life

A ready-to-install ignition coil pack (UF620) plus four 4504 double-iridium spark plugs engineered to restore smooth starts, reliable combustion, and improved throttle response for compatible Chevy and GM models.

This X4XZ replacement kit pairs a high-quality UF620 ignition coil with four 4504 double‑iridium spark plugs to address misfires, poor idle, hard starts, and reduced fuel efficiency that occur when ignition components wear out. Each part is built to meet or exceed original-equipment fit and function, using durable materials like thermoplastic coil connectors and iridium electrodes for long life and consistent spark delivery.

Will this kit fit my Chevy Cruze or other GM vehicle?

The kit is designed for specific GM models and model years — double-check compatibility before purchasing. It covers several Chevy Cruze, Aveo, Sonic, and select Pontiac models listed in the product fitment; consult the secondary images or your vehicle’s OEM part numbers for confirmation.

• Compatible with: 2011–2015 Chevrolet Cruze 1.8L; 2016 Cruze Limited 1.8L
• Also fits: 2009–2011 Chevrolet Aveo/Aveo5 1.6L and 2012–2018 Chevrolet Sonic 1.8L
• Pontiac models: 2009–2010 Pontiac G3 and 2009 Pontiac G3 Wave 1.6L
• Replaces OE numbers including UF620, 4504 and related OEM references like 96476983

How do these parts improve engine performance?

Replacing worn ignition coils and spark plugs restores consistent ignition timing and stronger, more reliable sparks under load. The double‑iridium plugs offer a finer electrode with extended wear life, while the coil’s improved connector and internal noise suppressor ensure efficient high-voltage transfer and reduced interference.

• Double iridium electrodes for longer life and stable spark over 100,000 km
• Thermoplastic coil connector resists heat-related cracking and ensures tight fit
• Internal ferrite noise suppressor reduces radio-frequency interference
• OE-matching design for direct fit and straightforward replacement

What should I expect during installation and maintenance?

Installation is typically direct replacement: remove the old coil pack and spark plugs, fit the new coil and plugs, and torque to manufacturer specs. No instruction manual is included, but the parts match OE dimensions and connectors for straightforward swap; seek professional help if you’re unsure about torque or gap settings.

• Package: 1 ignition coil pack (UF620) + 4 double iridium spark plugs (4504)
• No printed manual included — use vehicle service manual or technician guidance
• Inspect wiring harness and boots for damage during replacement
• Recommended professional installation if unfamiliar with ignition systems

How reliable is the X4XZ kit and what after-sales support is provided?

X4XZ designs these components to match or improve on OE performance using premium materials for longevity and consistent operation. The spark plugs’ iridium tips and coil construction aim to reduce repeat failures, and the brand backs the product with customer service and a limited warranty period.

• High-quality materials: stainless-steel spring and advanced thermoplastic connector
• Spark plugs rated for extended life and stable performance up to long mileage
• 24-hour customer service and a one-year product service warranty included
• Common replacement numbers listed for easy cross-referencing

Who is this for: The X4XZ UF620 + 4504 kit is aimed at DIY enthusiasts and professional technicians servicing compatible Chevy, Sonic, Aveo, and select Pontiac models that show ignition-related symptoms such as misfires, rough idle, or decreased fuel economy. Choose this kit if you want a direct-fit replacement using durable, OE-matching components and backed by short-term support for peace of mind during installation and initial operation.