Hi Brad, I'm glad to assist you. Both are basically the same. The affordable $51.49 set is our old batch of ignition coils (same interchange or OE replacement numbers) and our new batch of upgraded ignition coils with a higher price (both have same 1-year unlimited mileage warranty). Click the link below to order any of the 2 options. Happy shopping! https://www.carparts.com/ignition-coil/drivewire/set-repf504608-8?can=CPJE1043_20220624 (Old batch, much less price of $51.49) https://www.carparts.com/details/Ford/F-150/DriveWire/Ignition_Coil/2005/XLT/8_Cyl_5-dot-4L/SET-REPF504608-8.html?can=CPJE1043_20220624 (New batch, $94.49)

I don't know what the difference is but I bought the 51.49 one . It's been a over a year and the SUV is running fine . I haven't had any issues.

Hi Jerry, I'm glad to assist you. Yes. Most modern vehicles usually come with a rubber boot (integrated) that connects the coil to the spark plug. This boot has a spring or conductor inside to transfer the spark. This set of coils fits several Ford models from 2004 to 2008. For us to check carefully and be accurate on the part you need, please provide the complete details of your vehicle (year, make, model, submodel, and engine size). Still, it is best to call our parts specialist for real-time, live, and immediate assistance on our toll-free number, 1-866-529-0412 (Monday through Sunday).

Hi Corey, thanks for initiating contact. Replacing ignition coils can often help resolve engine misfires, especially if the misfire is related to faulty ignition components. Ignition coils are responsible for delivering the high voltage needed to ignite the air-fuel mixture in the engine's cylinders. When they fail, it can lead to symptoms such as rough idling, poor acceleration, and misfiring. If your vehicle information matches this product, use the link below to order while the part is in stock. Your order will come with a 30-day post-purchase price match guarantee. Enjoy shopping! https://www.carparts.com/ignition-coil/drivewire/set-repf504608-8?can=CPGG4850_CSQA_20240813

Hi Lupe, thank you for reaching out. I am happy to confirm that this set will fit your vehicle! You can click the link below to order the set while stocks last. Have a good one! https://www.carparts.com/ignition-coil/drivewire/set-repf504608-8?can=cpab2020_csqa_20240223

Hi Yadira, I'm pleased to assist you. Yes, these are guaranteed to fit the 2008 Ford F-150 Lariat 8 Cyl 5.4L with black coils. Click the link below to continue ordering while supplies last. Your order will come with a 30-day post-purchase price match guarantee. Enjoy shopping! https://www.carparts.com/ignition-coil/drivewire/set-repf504608-8?can=CPGG4850_CSQA_20230803