Aston.club Independent ownership knowledge

Spark plugs

V12 · 5.2-litre twin-turbo · 2018–2023

Part numbers and fitment

Check the exact plug designation. Heat range, thread and electrode design matter; engine size alone is not a part reference.

NGK original-equipment spark plug

Part link

Verified OE cross-reference

Aston Martin
CD33-12405-AACD33-12405-AA-PK
NGK
SITR7A11G94949
Application
DBS Superleggera V12. DBS Superleggera V12 with catalogue reference CD33-12405-AA.
Years
2018–2023
Full-set quantity
12

CD33-12405-AA-PK is a four-plug pack. A full set is 12 plugs: three Aston Martin packs. NGK 94949 is the stock number for SITR7A11G; check the seller’s pack size.

Before ordering

  • Only the listed 2018–2023 application is covered. Confirm engine, build date and market.
  • Use this match only for a VIN-specific catalogue reference CD33-12405-AA or four-plug pack CD33-12405-AA-PK. Earlier versions and other generations may use different plugs.
  • Confirm the current catalogue revision before ordering. Modified engines require a separate specification.
Evidence for this match

NGK maps CD33-12405-AA to SITR7A11G (94949). The genuine Aston listing identifies the NGK four-plug pack. Model-specific years and engine restrictions limit the application; a broad supplier model list does not establish every variant.

Reviewed

NGK spark plugs — supplied purchase reference

Part link

Owner-confirmed fitment

Owner-confirmed purchase references

NGK · Euro Car Parts
408870010
Application
DBS Superleggera V12. All 5.2-litre V12 models and variants.
Years
2018-2023

Before ordering

  • 5.2-litre V12 applications only. This owner confirmation does not cover V8, 5.9-litre, 6.0-litre or 6.5-litre V12 engines.
  • Confirm the supplied reference and pack size with the named supplier before ordering.
Evidence for this match

The owner supplied the DB11 V12 parts table and confirmed these parts for all 5.2-litre V12 models and variants. Brand names, references and genuine FoMoCo supplier descriptions are supplied information, not independently verified OE equivalence.

Owner-confirmed fitment — supplied table: DB11 V12 parts. Confirmed . Application: All 5.2-litre V12 models and variants. The supplied purchase references are not independently verified OE cross-references.

Reviewed

Sources and research

The NGK match is limited to the listed engine and years, and to cars whose VIN-specific catalogue specifies CD33-12405-AA. A full set contains 12 plugs.