ECCPP UF612 6 Ignition Coils with 6 Iridium Spark Plugs - Smooth
ECCPP UF612 6 Ignition Coils with 6 Iridium Spark Plugs - Smooth
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Our review of the ECCPP UF612 ignition coil and spark plug kit finds it best suited for owners of 2010-2012 Ford and Lincoln V6 3.5 vehicles who need a direct-fit replacement that improves starting and running smoothness. The single biggest reason to buy is the matched coil-and-plug pairing that claims about 15% more energy than OE coils, which translates to fewer misfires and a crisper throttle response when the parts work as intended. Installation is straightforward and the components are built to meet or exceed original equipment electrical and corrosion resistance standards.
Key Features
- Compatibility: Designed to directly replace OEM UF612 and AA5Z12029A parts for specific 2010-2012 Ford Flex and Lincoln MKS/MKT models, giving confidence in fitment.
- Matched Coil and Plug Set: Comes as a kit of six ignition coils with six iridium spark plugs so you replace both items at once to reduce misfire risk and improve cold-start performance.
- Improved Energy Output: ECCPP states the coils deliver about 15% more energy than OE coils, which can yield stronger sparks and smoother engine operation when ignition is the fault.
- Durable Construction: High conductive copper wire and high dielectric epoxy with corrosion-resistant connections aim to extend service life and maintain electrical connectivity.
- Plug Technology: Iridium spark plugs provide a precise, longer-wearing electrode that helps maintain stable ignition over time.
Who It's For
This kit is aimed at DIY mechanics and independent shops working on 2010-2012 Ford Flex V6 3.5, 2010-2011 Ford Taurus V6 3.5L, and 2010-2012 Lincoln MKS and MKT V6 3.5L models who need a full ignition set replacement. Replacing coils and plugs together is a practical choice for vehicles showing misfire codes, rough idle, or reduced fuel economy.
Owners who prioritize long-term proven durability from an OE dealer part or who have had prior aftermarket coil failures may want to compare warranty options and reviews carefully before purchasing, since some users reported early failures in real-world use.
Pros & Cons
Pros
- Direct-fit replacement for specified Ford and Lincoln V6 3.5 engines, simplifying installation and reducing fitment issues.
- Matched coil and iridium plug set improves chances of resolving misfires and enhances cold-start behavior.
- Construction features like high conductive copper wire and dielectric epoxy aim to improve reliability and electrical performance.
Cons
- Some customers reported durability concerns with premature failures, so longevity may vary by vehicle and use.
Specifications
| Compatible Models | 2010-2012 Ford Flex, 2010-2011 Ford Taurus, 2010-2012 Lincoln MKS, MKT V6 3.5L |
| Included Parts | 6 ignition coils and 6 iridium spark plugs |
| OEM Reference | Replace OEM UF612; AA5Z12029A |
| Performance Claim | Approx. 15% more energy than OE coils |
| Construction | High conductive copper wire and high dielectric epoxy |
| Warranty | 12-month warranty |
Our Verdict
The ECCPP UF612 coil and plug kit is a sensible, cost-effective option for owners of the listed Ford and Lincoln V6 3.5L cars who need to replace failing ignition components and want improved spark energy and smoother running. It offers clear fitment and useful construction details, but buyers should be aware of mixed reports on long-term durability and keep the 12-month warranty in mind when deciding.
Frequently Asked Questions
Will these fit my 2011 Ford Flex V6 3.5?
Yes, the kit lists compatibility with 2010-2012 Ford Flex V6 3.5 models as a direct-fit replacement for the OEM numbers noted.
Should I replace coils and plugs at the same time?
Yes, replacing both together reduces the chance of continued misfires and provides better cold-start performance and smoother running.
What if a coil fails early?
The product includes a 12-month warranty; check fitment first and contact the seller for warranty support if premature failure occurs.
Editor's Take
The ECCPP UF612 coil and iridium plug kit is a cost-effective direct-fit solution for select 2010-2012 Ford and Lincoln V6 3.5L vehicles, improving spark energy and smooth running while offering a 12-month warranty despite some durability reports.

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