1999–2019 Ford F-250 Super Duty 6.8L Spark Plugs
OE-verified plug, cross-brand equivalents, gap, and where to buy for the 1999–2019 Ford F-250 Super Duty 6.8L.
Verified against a manufacturer OE catalog.
The Motorcraft SP-515 is a gasket seat spark plug. These specifications are decoded from the Motorcraft part number and determine which plugs it safely cross-references to — a valid equivalent must match the thread, reach, seat and heat range.
Spark plugs that fit the 1999–2019 Ford F-250 Super Duty 6.8L
| Plug | Metal | Gap | Buy |
|---|---|---|---|
| OE ✓ Motorcraft SP-515 | — | — | Buy |
Frequently asked questions
What spark plug does a 1999–2019 Ford F-250 Super Duty 6.8L use?
The OE-verified plug is the Motorcraft SP-515 (see specs), gapped at the factory spec. Verified against a manufacturer OE catalog.
How many spark plugs does a 1999–2019 Ford F-250 Super Duty 6.8L need?
Check your owner's manual for the exact count for this engine.
What is the spark plug gap for a 1999–2019 Ford F-250 Super Duty 6.8L?
See the underhood emissions label — always confirm against the label or manual before installing.
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