Granatelli Motorsports 28-1705CP Pro Series 60,000-Volt Coil-On-Plug Kit
Upgrade your Ford modular engine’s ignition system with the Granatelli Motorsports 28-1705CP Pro Series Coil-On-Plug and Connector Kit. Designed for select Ford 4.6L, 5.4L, and 5.8L 4-valve applications, this high-performance ignition kit delivers up to 60,000 volts to provide the stronger, more consistent spark demanded by performance street vehicles, high-compression engines, and select power-adder applications.
Stronger Spark. Better Ignition Performance.
Granatelli Pro Series ignition coils are engineered to deliver more available voltage than factory-style coils. The increased ignition energy helps support improved combustion, sharper throttle response, smoother acceleration, and reliable performance under demanding operating conditions.
Key Features and Benefits
- Up to 60,000 volts of ignition output for a powerful and consistent spark
- Designed for select Ford 4.6L, 5.4L, and 5.8L 4-valve modular engines
- Helps improve ignition performance, throttle response, and combustion efficiency
- Well suited for stock, modified, high-compression, and select small-nitrous applications
- Includes high-performance coil-on-plug coils and matching connector components
- Epoxy-filled internal construction helps provide durability and dependable operation
- Built-in RFI and EMI suppression helps prevent unwanted electronic interference
- OBD-II computer safe and designed as a direct-fit ignition upgrade
- Manufactured in the USA
Product Specifications
| Brand | Granatelli Motor Sports |
| Manufacturer Part Number | 28-1705CP |
| Product Series | Pro Series |
| Coil Type | Coil-On-Plug |
| Maximum Voltage | 60,000 Volts |
| Turn Ratio | 70:1 |
| Primary Resistance | 0.300 Ohms |
| Internal Construction | Epoxy |
| RFI/EMI Suppression | Yes |
Ideal for Performance Ford Applications
Weak or inconsistent factory ignition coils can contribute to misfires, hesitation, poor acceleration, and reduced performance—especially as horsepower, cylinder pressure, or spark-plug gap increases. The Granatelli 28-1705CP kit provides the additional ignition capability needed to maintain a strong spark and dependable engine operation in demanding Ford performance applications.
Important Fitment Notice: This kit is intended for select Ford modular 4-valve DOHC engine applications. Vehicle fitment can vary by model, production year, engine configuration, cylinder-head design, and factory electrical connector. Confirm that Granatelli part number 28-1705CP matches your vehicle before ordering.