UF621 Ignition Coil & SP530 Double Iridium Spark Plug for L4 Mazda 3, Mazda 6,Tribute/Ford Focus, EcoSport,Transit Connect,Escape/Mercury Mariner Replaces# FD505 DG522 9E5Z12029A DG-507 DG-541 C-1453

The quality of the product is very good and worked well. Noticeable upon start...runs smoother and better response.The plugs that come with this kit indicate compatible for F150 3.5 EcoBoost. They are compatible but at a hotter heat range of 6 vs 12 for the OEM plugs. After some research I found that many suggest a heat range of 6 for the Eco Boost. They are iridium plugs ILT6RG8G and normally used on Jaguars and Land Rovers. No cross reference will indicate compatibility until you discover these are actually NGK 95605. Then you begin to see the references toward heat range 6 as preferred using these on the 3.5 ecoboost engine. So this seems to be the best deal at this price point.

Easy install- 2007 Toyota Highlander. Only changed 3 (coils and plugs, 4,5,6). The others are harder to get to- coil 6 was the bad one. Noticed improved performance, smoother and quicker uptake from the start. Will update if I run into issues in future. Not a hard install, watch YouTube videos and you should be fine. I’m not one who is too mechanically inclined, thus reason for not changing coils/plugs 1-3 as I had to remove too much.

This product was great. It was very well made and fit like the higher price items. I was able to get my mother back on the road in minutes. If you are looking for a great product look no more. High quality for a lower price.

Great bang for your buck slapped them in my misfiring pilot and she purred like a new born kitten with this coils and plugs definitely recommend

only had time to replace bad plug and coil pack so far

They work better than I thought and for the price it worth I will recommend them the quality is very good

I recently purchased the UF652 Ignition Coil & 93815 Double Iridium Spark Plug set for my 2015 Hyundai Accent, and I’m extremely satisfied with the results. This combo has significantly improved my car’s performance and efficiency. Here’s my detailed review:What I Loved:Complete Package: The set includes 4 ignition coils and 4 double iridium spark plugs, which is everything I needed for a full replacement. It’s convenient to have both components in one package, saving me time and money.Improved Engine Performance: After installing these, I noticed an immediate improvement in my car’s acceleration and overall engine smoothness. The double iridium spark plugs provide a more efficient spark, which leads to better fuel combustion and improved performance.Durable and High-Quality Materials: The iridium spark plugs are designed to withstand high temperatures, making them perfect for modern engines. They’re built to last, which means I won’t have to replace them anytime soon.Fuel Efficiency: Since installing this set, I’ve noticed a slight improvement in my car’s fuel efficiency. The better combustion provided by the iridium plugs seems to be making a difference.Easy Installation: The parts were easy to install, even for someone like me who isn’t a professional mechanic. The fit was perfect for my Hyundai Accent, and the process was straightforward.Cost-Effective Solution: Compared to buying these parts individually, this set is a fantastic deal. It’s a high-quality, affordable option for anyone looking to replace their ignition coils and spark plugs.What Could Be Improved:The only minor downside is that the packaging could be a bit more secure to prevent the parts from shifting during shipping. However, everything arrived in good condition, so it wasn’t a big issue.Final Thoughts:The UF652 Ignition Coil & 93815 Double Iridium Spark Plug set is a fantastic upgrade for anyone with a 2012-2020 Hyundai Accent. It’s affordable, easy to install, and delivers noticeable improvements in engine performance and fuel efficiency. Whether you’re replacing worn-out parts or just looking to enhance your car’s performance, this set is a great choice.Highly recommend for Hyundai Accent owners!

Engine has 208,000 miles. Runs like new after installing these parts. Very satisfied and would recommend.