Does the manual say how to change the plugs?
No. The parts notes say to contact an authorized dealer for spark plug replacement and to follow the scheduled interval.
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In-depth guide
2019 Ford F-150
2019 F-150 spark plug gap and Motorcraft number by gasoline engine. The manual sends replacement to a dealer.
| Item | Figure |
|---|---|
| 2.7L EcoBoost | Coil on plug. Gap 0.028–0.031 in (0.7–0.8 mm). Motorcraft SP-542. Firing order 1-4-2-5-3-6. Compression 10.3:1. 164 cubic inches. |
| 3.3L | Coil on plug. Gap 0.049–0.053 in (1.25–1.35 mm). Motorcraft SP-520. Firing order 1-4-2-5-3-6. Compression 12:1. 201 cubic inches. |
| 3.5L EcoBoost | Coil on plug. Gap 0.030–0.033 in (0.75–0.85 mm). Motorcraft SP-534. Firing order 1-4-2-5-3-6. Compression 10.5:1. 213 cubic inches. |
| 5.0L | Coil on plug, coil near plug. Gap 0.049–0.053 in (1.25–1.35 mm). Motorcraft SP-551. Firing order 1-3-7-2-6-5-4-8. Compression 12:1. 307 cubic inches. |
| 3.0L diesel | No spark plug row. Glow plugs ZD-22. Firing order 1-4-2-5-3-6. Compression 16:1. 183 cubic inches. Required fuel is ultra low sulfur diesel. |
| Interval | Normal schedule, replace spark plugs every 100,000 mi (160,000 km). Towing, and extensive idling, say every 60,000 mi (96,000 km) for a gasoline engine. |
Source: owner's manual / last verified 2026-10-16 (2019 F-150 Owner's Manual, first printing, September 2018, engine specifications (opens in a new tab)).
Difficulty, time, and cost are estimates when this guide gives them. Torque is a cited figure, or it is left off.
Main source: 2019 F-150 Owner's Manual, first printing, September 2018, engine specifications (opens in a new tab), Ford Motor Company, published 2018-09-01, read 2026-10-16.
| Item | Figure | Where it comes from |
|---|---|---|
| 2.7L EcoBoost | Coil on plug. Gap 0.028–0.031 in (0.7–0.8 mm). Motorcraft SP-542. Firing order 1-4-2-5-3-6. Compression 10.3:1. 164 cubic inches. | Engine specifications and Motorcraft parts for the 2.7L |
| 3.3L | Coil on plug. Gap 0.049–0.053 in (1.25–1.35 mm). Motorcraft SP-520. Firing order 1-4-2-5-3-6. Compression 12:1. 201 cubic inches. | Engine specifications and Motorcraft parts for the 3.3L |
| 3.5L EcoBoost | Coil on plug. Gap 0.030–0.033 in (0.75–0.85 mm). Motorcraft SP-534. Firing order 1-4-2-5-3-6. Compression 10.5:1. 213 cubic inches. | Engine specifications and Motorcraft parts for the 3.5L |
| 5.0L | Coil on plug, coil near plug. Gap 0.049–0.053 in (1.25–1.35 mm). Motorcraft SP-551. Firing order 1-3-7-2-6-5-4-8. Compression 12:1. 307 cubic inches. | Engine specifications and Motorcraft parts for the 5.0L |
| 3.0L diesel | No spark plug row. Glow plugs ZD-22. Firing order 1-4-2-5-3-6. Compression 16:1. 183 cubic inches. Required fuel is ultra low sulfur diesel. | Engine specifications and Motorcraft parts for the 3.0L diesel |
| Interval | Normal schedule, replace spark plugs every 100,000 mi (160,000 km). Towing, and extensive idling, say every 60,000 mi (96,000 km) for a gasoline engine. | Scheduled maintenance |
2.7L EcoBoost
3.3L
3.5L EcoBoost
5.0L
3.0L diesel
Firing sequence from the 2019 F-150 owner's manual engine specifications. Sequence only. The diesel row is included because the table prints it. It is not a spark plug.
Illustration, not to scale; confirm with your owner's manual. This is the firing sequence only. It does not show where each cylinder sits on the engine.
Source for this drawing: 2019 Ford F-150 Owner's Manual, edition date 201808, engine specifications.
SP-542 is the 2.7L plug. SP-520 is the 3.3L plug. SP-534 is the 3.5L EcoBoost plug. SP-551 is the 5.0L plug. The parts notes say to contact a dealer for replacement and to replace the plugs at the appropriate intervals.
2.7L gap is 0.028–0.031 in (0.7–0.8 mm). 3.5L gap is 0.030–0.033 in (0.75–0.85 mm). 3.3L and 5.0L gaps are 0.049–0.053 in (1.25–1.35 mm). The 5.0L ignition line says coil on plug, coil near plug.
The normal schedule says replace spark plugs every 100,000 mi (160,000 km). The towing block and the extensive-idling block each say replace spark plugs every 60,000 mi (96,000 km) and mark that line gasoline engine.
The 3.5L gap in this printing is 0.030–0.033 in (0.75–0.85 mm). A later 3.5L F-150 book can print a different gap and a different part number. Use this page only for the September 2018 printing.
Outbound links only. BaySheet does not sell parts. Confirm fitment on the retailer page. Amazon links are searches for a real part name plus this vehicle. Tool rows do not get a product search. The search is not a part number.
Part
Motorcraft SP-542
2.7L EcoBoost. Gap 0.028-0.031 in (0.7-0.8 mm).
2019 F-150 spark plug table (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
Motorcraft SP-520
3.3L. Gap 0.049-0.053 in (1.25-1.35 mm).
2019 F-150 spark plug table (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
Motorcraft SP-534
3.5L EcoBoost. Gap 0.030-0.033 in (0.75-0.85 mm).
2019 F-150 spark plug table (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
Motorcraft SP-551
5.0L. Gap 0.049-0.053 in (1.25-1.35 mm).
2019 F-150 spark plug table (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
Motorcraft ZD-22
Glow plugs on the 3.0L diesel table. The diesel specification table does not print a spark plug gap.
2019 F-150 diesel glow plugs (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
No. The parts notes say to contact an authorized dealer for spark plug replacement and to follow the scheduled interval.
Motorcraft SP-551, gap 0.049–0.053 in (1.25–1.35 mm), firing order 1-3-7-2-6-5-4-8. The normal interval is 100,000 mi (160,000 km), and the towing and extensive-idling blocks say 60,000 mi (96,000 km) for a gasoline engine.
The maintenance checklist is on the site now. The email list is not sending yet, so this box will not store an address.
Same repair, different model year. Use the page that matches the truck or car in the driveway. A figure on one year is not a figure for the next.
These guides cover the same kind of work. Their numbers belong to those vehicles, not to this one.
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