2018 Ford Fiesta Spark plugs
Depends on your version. Choose yours, or compare them here.
- 1.0L EcoBoost SP-538A part number·0.026–0.030 in gap
- 1.6L Duratec-16V Ti-VCT (Sigma) SP-525 part number·0.028–0.031 in gap
SP-538A
Part number · 1.0L EcoBoost
- Gap0.026–0.030 in
SP-525
Part number · 1.6L Duratec-16V Ti-VCT (Sigma)
- Gap0.028–0.031 in
2018 Ford Fiesta Owner's Manual, PDF pages 249, 247 and 250
SP-538AOpen the manual at this page ↗Added Oct 16, 2026 · Updated
See where it's printed
Spark plugs (part number) · 1.0L EcoBoost · PDF page 249
SP-538A
Spark plugs (gap) · 1.0L EcoBoost · PDF page 247
0.026–0.030 in
Spark plugs (part number) · 1.6L Duratec-16V Ti-VCT (Sigma) · PDF page 250
SP-525
Spark plugs (gap) · 1.6L Duratec-16V Ti-VCT (Sigma) · PDF page 247
0.028–0.031 in
2018 Ford Fiesta Owner's Manual, PDF pages 249 and 247
SP-538AOpen the manual at this page ↗Added Oct 16, 2026 · Updated
See where it's printed
Spark plugs (part number) · 1.0L EcoBoost · PDF page 249
SP-538A
Spark plugs (gap) · 1.0L EcoBoost · PDF page 247
0.026–0.030 in
2018 Ford Fiesta Owner's Manual, PDF pages 250 and 247
SP-525Open the manual at this page ↗Added Oct 16, 2026 · Updated
See where it's printed
Spark plugs (part number) · 1.6L Duratec-16V Ti-VCT (Sigma) · PDF page 250
SP-525
Spark plugs (gap) · 1.6L Duratec-16V Ti-VCT (Sigma) · PDF page 247
0.028–0.031 in
See every quote (4 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 1.0L EcoBoost | SP-538Apart number | “SP-538A” | PDF page 249 ↗ |
| 1.0L EcoBoost | 0.026–0.030 ingap | “0.026–0.030 in” | PDF page 247 ↗ |
| 1.6L Duratec-16V Ti-VCT (Sigma) | SP-525part number | “SP-525” | PDF page 250 ↗ |
| 1.6L Duratec-16V Ti-VCT (Sigma) | 0.028–0.031 ingap | “0.028–0.031 in” | PDF page 247 ↗ |
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