DETYI DG508 Coil Pack + SP479 Iridium Spark Plugs for Ford 4.6L/5.4L V8 (F-150, Mustang, Expedition)
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Description
xDETYI DG508 Coil Pack & SP479 Iridium Spark Plugs — Ford V8 Upgrade
Upgrade your Ford 4.6L or 5.4L V8 with a coordinated ignition refresh from DETYI. The DG508 coil pack and SP479 iridium spark plugs are designed to deliver a renewed ignition path, aiming for steadier starts, smoother acceleration, and more consistent engine operation across daily driving, highway runs, and occasional towing days. This set emphasizes durability and reliable spark delivery, built to withstand heat and vibration that come with demanding driving conditions.
What’s included
- 8 x DG508 ignition coils — engineered for heat resistance and reliable insulation, supporting consistent ignition across RPM ranges.
- 8 x SP479 iridium spark plugs — high-precision ignition elements designed for longer life and dependable performance.
Key benefits you may notice
- Quicker starts and smoother acceleration as fresh ignition paths reduce hesitation during cold starts and warm starts alike.
- Cleaner idle and more stable power delivery across varied driving conditions and load changes.
- Potential gains in efficiency from a steadier, more consistent burn and fewer misfire events.
- Reduced rough-running symptoms in hot climates or during longer highway drives.
Compatibility and fitment: Designed for Ford 4.6L and 5.4L V8 engines, this kit suits popular models including F-150, F-250, Expedition, Crown Victoria, Mustang, and Lincoln Navigator. It replaces older part numbers DG457, DG472, and DG491, providing a straightforward OEM replacement option.
Durability and installation
- Coils feature premium materials with strong heat resistance and solid insulation to guard against cracking and misfiring.
- Pre-gapped plugs and coil boots are designed for a secure, snug fit without modifications, enabling a hassle-free installation.
Real-world usage and notes
In practice, this kit is positioned as a comprehensive renewal for aging ignition systems. Expect reliable starting performance, steadier throttle response, and smoother operation on both daily commutes and longer trips. As with any upgrade, results depend on the vehicle’s current condition and maintenance history.
Why choose DETYI
- OEM-grade replacements crafted for Ford V8 compatibility and broad model coverage.
- Quality materials and engineering aimed at long-term reliability across diverse climates.
- One complete package to refresh ignition components, helping simplify maintenance planning.
Note: Benefits can vary with vehicle condition and driving patterns. This kit offers a structured upgrade path that may help reclaim factory-like ignition performance rather than relying on aging components alone.
FAQ
Q: Will this DETYI DG508 + SP479 set fit my Ford V8?
A: Yes—designed for Ford 4.6L/5.4L V8s, including F-150, F-250, Expedition, Mustang, and Lincoln variants. Confirm exact year/model for compatibility.
Q: What maintenance benefits can I expect from this kit?
A: Refreshing ignition with new coils and plugs may yield smoother starts, steadier idle, and more consistent performance under varied driving conditions.
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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