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Ford’s 6.8L Triton V10 spans 2V and 3V cylinder-head families, and the correct plug is year, chassis, emissions label and production-date specific. There is no safe universal ‘Triton V10 plug.’ Early 3V engines are especially important to identify: Ford revised the long two-piece design, and service replacement is not a reason to fit a plug intended for a different head. Use the VIN, under-hood emissions label and a Ford or catalog fitment lookup; follow the exact vehicle manual for gap and torque. The groups below show real catalogued choices, not a mix-and-match shopping list.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Motorcraft AWSF-22E | $4-$9 each | Amazon · eBay |
| 2 | Motorcraft AWSF-22W | $4-$10 each | Amazon |
| 3 | Motorcraft AGSF-32FM | $5-$11 each | Amazon |
| 4 | Champion 7989 | $18-$25 each | Amazon |
| 5 | Autolite HT15 | $8-$15 each | Amazon |
| 6 | Champion 9406 | $12-$16 each | Amazon |
| 7 | Motorcraft SP-546 | $10-$22 each | Amazon · eBay |
| 8 | Motorcraft SP-509 | $8-$16 each | Amazon · eBay |
| 9 | Champion 7406 | $9-$15 each | Amazon |
The picks, in detail
Motorcraft AWSF-22E
An OE-listed spark plug for early 6.8L V10 applications such as the 2001 owner-guide listing; verify the emissions label before purchase.
- Motorcraft part AWSF-22E
- early 2-valve 6.8L application
- copper-core service style
- Direct period-correct Ford listing
- Clear early-engine identification
- Not for later three-valve engines
Motorcraft AWSF-22W
A Motorcraft OE part listed for late-1990s 6.8L V10 owner-guide applications; match the vehicle label rather than assuming it fits all 2-valve years.
- Motorcraft part AWSF-22W
- early 2-valve V10 listing
- OEM-style replacement
- Specific historic Ford application
- Useful only when catalog lookup confirms it
- Not a substitute for the later SP-series 3-valve plugs
Motorcraft AGSF-32FM
A Ford/Motorcraft plug used on later two-valve Modular-engine applications; confirm the exact E-Series, F-Series or motorhome year and gap from the label.
- Motorcraft AGSF-32FM
- two-valve Modular application
- factory-style heat range
- Established Motorcraft service option
- Avoids cross-family 3-valve plug designs
- Fitment changes by chassis and model year
Champion 7989
A catalogued replacement for 2006-2008 F-53 6.8L three-valve motorhome applications; use only after confirming the exact chassis catalog.
- Champion part 7989
- 2006-2008 F-53 catalog application
- three-valve V10 use
- Application-specific aftermarket option
- Distinct from later F-53 listings
- Do not use it to bypass a VIN/year lookup
Autolite HT15
A one-piece aftermarket service plug used for certain early three-valve Ford applications; confirm the engine’s original plug and catalog fitment before ordering all ten.
- Autolite HT15
- one-piece service design
- early three-valve application
- Designed for the early 3-valve service context
- Alternative to an original two-piece design
- Not for two-valve V10 heads or every three-valve year
Champion 9406
A catalogued premium Champion replacement for later 2008-2019 F-53 6.8L V10 applications; confirm the exact chassis listing before ordering.
- Champion part 9406
- later F-53 catalog application
- premium electrode construction
- Distinct premium alternative in the later F-53 application
- Listed separately from Champion 7406
- Not a universal substitute for E-Series or Super Duty V10s
Motorcraft SP-546
The later Ford service part that supersedes SP-515 in specified 6.8L three-valve applications; do not buy both for the same engine.
- Motorcraft SP-546
- current replacement for specified SP-515 fitments
- three-valve service application
- Avoids installing an outdated SP-515 listing where Ford calls for SP-546
- Ford-brand current service choice
- Not a second plug option for an SP-515 vehicle—choose the catalogued current part
Motorcraft SP-509
A Motorcraft plug listed in Ford’s 2014 6.8L V10 motorhome documentation; its published engine gap is 0.039-0.043 inch for that chassis generation.
- Motorcraft SP-509
- 2014 6.8L V10 motorhome listing
- 0.039-0.043 in manual gap range
- Supported by a Ford owner-guide parts table
- Specific later motorhome application
- Do not apply its gap or part number to a different V10 year
Champion 7406
A catalogued replacement for 2008-2019 Ford F-53 6.8L V10 applications, separate from the earlier Champion 7989 listing.
- Champion part 7406
- 2008-2019 F-53 catalog application
- later three-valve V10 use
- Explicit later F-53 application
- Useful aftermarket cross-check after VIN lookup
- May not fit E-Series or Super Duty V10s from the same calendar year
Buying tips
- Identify 2V versus 3V first, then verify VIN, chassis and under-hood label. Ford V10 plug part numbers and gaps change across the production run.
- For the early 3V design, use a qualified technician or the factory service procedure if removal resistance is abnormal; forcing a plug can create a much larger repair.
- Buy a complete matched set of current-fit plugs for one engine. Never mix early and late parts or use a listed cross-reference as permission to change heat range or gap.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.