2026 Cadillac CT4 Spark plugs
Depends on your version. Choose yours, or compare them here.
- 2.0L L4 Turbo Engine (LSY) and 2.7L L4 Turbo Engine (L3B) 0.026–0.030 in gap
- 3.6L V6 Twin Turbo Engine (LF4) 0.030–0.035 in gap
0.026–0.030in
Gap · 2.0L L4 Turbo Engine (LSY) and 2.7L L4 Turbo Engine (L3B)
0.030–0.035in
Gap · 3.6L V6 Twin Turbo Engine (LF4)
2026 Cadillac CT4 Owner's Manual, PDF page 377
0.65–0.75 mm (0.026–0.030 in)Open the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Spark plugs (gap) · 2.0L L4 Turbo Engine (LSY) and 2.7L L4 Turbo Engine (L3B) · PDF page 377
0.65–0.75 mm (0.026–0.030 in)
Spark plugs (gap) · 3.6L V6 Twin Turbo Engine (LF4) · PDF page 377
0.75–0.90 mm (0.030–0.035 in)
2026 Cadillac CT4 Owner's Manual, PDF page 377
0.65–0.75 mm (0.026–0.030 in)Open the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Spark plugs (gap) · 2.0L L4 Turbo Engine (LSY) and 2.7L L4 Turbo Engine (L3B) · PDF page 377
0.65–0.75 mm (0.026–0.030 in)
2026 Cadillac CT4 Owner's Manual, PDF page 377
0.75–0.90 mm (0.030–0.035 in)Open the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed
Spark plugs (gap) · 3.6L V6 Twin Turbo Engine (LF4) · PDF page 377
0.75–0.90 mm (0.030–0.035 in)
See every quote (2 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 2.0L L4 Turbo Engine (LSY) and 2.7L L4 Turbo Engine (L3B) | 0.026–0.030 ingap | “0.65–0.75 mm (0.026–0.030 in)” | PDF page 377 ↗ |
| 3.6L V6 Twin Turbo Engine (LF4) | 0.030–0.035 ingap | “0.75–0.90 mm (0.030–0.035 in)” | PDF page 377 ↗ |
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