Granatelli 97-10 Ford F-150 4.6L 25KV OEM Coil Pack Replacements - Black (Set of 8)

Direct-Replacement High-Performance Coil Packs for the 1997 Through 2010 Ford F-150 4.6L V8

The Granatelli Motor Sports GMS21-2001-SF is a complete set of eight 25,000-volt OEM-style coil pack replacements finished in satin black, engineered as a direct plug-and-play replacement for the factory ignition coil packs on the 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010 Ford F-150 equipped with the 4.6L two-valve V8. The GMS21-2001-SF delivers 25KV of output voltage per coil, matching OEM voltage specification while using Granatelli's wound coil construction and quality-controlled internal build to provide a reliable, long-lasting replacement for worn or failed factory ignition coils. Each coil in the GMS21-2001-SF set uses the OEM connector and mounting point for a plug-and-play installation with no wiring modification. The satin black finish keeps the under-hood appearance clean and consistent with the factory look. All eight coils are included in one purchase for a complete ignition system refresh on the Ford 4.6L 2V V8.

Key Features

• 25,000-Volt OEM-Level Output: Matches factory coil specification for consistent ignition across all eight cylinders on the 4.6L 2V V8.
• Complete Eight-Coil Set: All eight coil packs included for a full ignition system replacement or upgrade in one purchase.
• Direct OEM Plug-and-Play Fit: Uses factory connector and mounting points for installation on 1997 through 2010 F-150 4.6L with no modification.
• Satin Black Finish: Clean appearance that blends with the factory under-hood aesthetic on the 1997 through 2010 F-150.
• Covers 14 Model Years: Single part number covers the full 1997 through 2010 run of F-150 with the 4.6L 2V V8 engine.

What's Included

• 8 x Granatelli GMS21-2001-SF 25KV OEM Coil Pack Replacements, Satin Black

Specifications

Fitment

Frequently Asked Questions

1. Does the GMS21-2001-SF fit the 2V and 3V versions of the Ford 4.6L?
   The GMS21-2001-SF is designed specifically for the 4.6L two-valve (2V) V8 found in the 1997 through 2010 Ford F-150. The 4.6L 3V (three-valve) engine uses a different coil-on-plug ignition system and requires a different coil part number. Verify your engine code before ordering.
2. How do I know if my F-150 4.6L coil packs need replacement?
   Common symptoms of failing coil packs on the 4.6L 2V include rough idle, engine misfires, hesitation under acceleration, reduced fuel economy, and stored P0300-series misfire codes on an OBD2 scan. A single failed coil often causes the engine to run on seven cylinders with noticeable vibration at idle.
3. Can I replace only the failed coil packs instead of all eight?
   Yes, replacing only the failed coil pack is possible as an emergency repair. However, on high-mileage 4.6L F-150 trucks, the remaining coil packs are at similar wear levels and often fail in sequence. Replacing all eight GMS21-2001-SF coils at once eliminates the need for repeat repairs and restores consistent ignition across all eight cylinders.
4. Is the GMS21-2001-SF plug-and-play on a stock 1997 through 2010 F-150?
   Yes. Each coil in the set uses the OEM direct-fit plug and mounting configuration for the 4.6L 2V V8. No wiring modifications, tools beyond standard hand tools, or ECU changes are required for installation.
5. Will replacing the GMS21-2001-SF coil packs help with fuel economy on my F-150?
   Weak or failing coil packs reduce combustion efficiency, which can lower fuel economy measurably. Replacing worn coil packs with the GMS21-2001-SF restores proper spark energy, which can help recover fuel economy lost to ignition-related misfires and incomplete combustion.
6. Does the satin black finish on the GMS21-2001-SF hold up under hood temperatures?
   Yes. The satin black finish on the GMS21-2001-SF is applied to withstand the temperature cycling that engine bay components experience during normal operation on the F-150 4.6L V8.
7. Is there a warranty on the Granatelli GMS21-2001-SF?
   Granatelli Motor Sports products include a manufacturer warranty. Contact Granatelli Motor Sports with proof of purchase for warranty support on the GMS21-2001-SF.
8. Does the GMS21-2001-SF work on an F-150 with performance modifications?
   The GMS21-2001-SF is an OEM-spec replacement coil pack set. It is appropriate for stock and lightly modified 4.6L 2V F-150 applications. Heavily modified builds with significant compression or power-adder increases may benefit from a higher-output coil specification.

Install Instructions

Disconnect the negative battery terminal. Remove the engine cover if equipped on your F-150. Locate the eight ignition coil packs on the valve covers of the 4.6L V8. Disconnect each coil connector by pressing the release tab and pulling firmly. Remove the single retaining bolt securing each coil to the valve cover. Pull each coil straight out of the spark plug tube. Install each GMS21-2001-SF coil by inserting it straight down into the spark plug tube, threading the retaining bolt, and pressing the electrical connector firmly until it clicks. Reconnect the negative battery terminal. Start the engine and clear any stored ignition or misfire codes with a scan tool.