What is the spark plugs of the 2015 Ford Mustang?

5.0L V8: SP-519 / CYFS-12Y (part number); 3.7L V6: SP-520 / CYFS-12F-5 (part number); 2.3L EcoBoost: SP-537 / CYFS-12Y-2 (part number). Source: 2015 Ford Mustang Owner's Manual.

2015 Ford Mustang Spark plugs

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Depends on your version. Choose yours, or compare them here.

5.0L V8 SP-519 / CYFS-12Y part number
3.7L V6 SP-520 / CYFS-12F-5 part number
2.3L EcoBoost SP-537 / CYFS-12Y-2 part number

2015 Ford Mustang Owner's Manual, PDF page 272

SP-519 / CYFS-12YOpen the manual at this page ↗Added Oct 16, 2026 · Updated Oct 19, 2026

See where it's printed

Spark plugs (part number) · 5.0L V8 · PDF page 272
SP-519 / CYFS-12Y

Spark plugs (part number) · 3.7L V6 · PDF page 272
SP-520 / CYFS-12F- 5

Spark plugs (part number) · 2.3L EcoBoost · PDF page 272
SP-537 / CYFS-12Y-2

See every quote (3 values)

All versions

3 values

Applies to	Value	Manual says	Page
5.0L V8	SP-519 / CYFS-12Ypart number	“SP-519 / CYFS-12Y”	PDF page 272 ↗
3.7L V6	SP-520 / CYFS-12F-5part number	“SP-520 / CYFS-12F- 5”	PDF page 272 ↗
2.3L EcoBoost	SP-537 / CYFS-12Y-2part number	“SP-537 / CYFS-12Y-2”	PDF page 272 ↗

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