ENA 12‑Piece Iridium Spark Plug & Ignition Coil Pack for Nissan/Infiniti 3.5L V6 (UF550 Replacement)
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Description
xOE-grade reliability for 3.5L V6 engines
Introducing the ENA UF550 replacement kit: a matched pair of components designed to work together when you service Nissan and Infiniti 3.5L V6 powertrains. The spark plugs use iridium alloy for durable tips, while the ignition coils deliver crisp spark energy. Built to meet or exceed original equipment expectations, the set is engineered to perform across a wide range of conditions, from city commuting to highway passing.
What’s included
- Six iridium spark plugs engineered for consistent ignition and long life under varied loads.
- Six ignition coils designed for reliable spark delivery and robust electrical performance.
- Compatible part considerations and replacement references, including UF550 and related identifiers.
- Clear packaging and markings to support quick confirmation during installation.
- 24-month warranty covering manufacturing defects and covered use cases.
Key benefits you may notice on the road
- Smoother idle and steadier power delivery as ignition timing remains stable across cylinders.
- Better throttle response when moving from idle to acceleration, especially at mid-range speeds.
- Maintained engine efficiency with even combustion across all cylinders over time.
- Direct-fit parts that simplify installation and reduce the need for modification or guesswork.
Quality and durability
The iridium spark plugs are built for resistance to wear, with strong heat tolerance and reliable cold starts. The ignition coils are designed to withstand vibration and high electrical load, helping maintain spark quality over longer service intervals.
Compatibility snapshot
This kit targets a broad family of 3.5L V6 Infiniti and Nissan models, including Maxima, Murano, Pathfinder, Altima, Q50, Q70, QX60, FX35, and more. Given the varied model years, please verify your specific vehicle with the UF550 references and your account information.
Installation and maintenance tips
Before starting, ensure the engine is cool and the battery is disconnected. Use standard safety practices, and follow the vehicle’s service manual for torque specs and step-by-step instructions. A well-lubricated thread and proper sealing help ensure reliable startup after installation.
Why choose ENA
ENA parts are designed to deliver predictable maintenance outcomes with straightforward installation, clear part references, and readable packaging. This kit provides a practical balance of performance, coverage, and value for many 3.5L engines, without overpromising results.
FAQ
Q: What exactly is included in the ENA UF550 replacement kit?
A: The kit includes 6 iridium spark plugs and 6 ignition coils designed for 3.5L Nissan/Infiniti V6 engines.
Q: How can I confirm if this fits my vehicle?
A: Check your vehicle year, model, and 3.5L V6 engine alignment; compare UF550 part numbers and listed compatible models.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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