Aston.club Independent ownership knowledge

Spark plugs

V12 · 5.2-litre twin-turbo · 2016–2023

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
DB11 V12. Vehicles with catalogue reference CD33-12405-AA.
Years
DB11 generation: 2016–2023; confirm the VIN-specific part reference
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

  • V12 only. This reference does not establish fitment for the DB11 V8.
  • Use this match only when the VIN-specific catalogue specifies CD33-12405-AA or its four-plug pack CD33-12405-AA-PK.
  • Confirm market and current catalogue revision before ordering. Modified engines require a separate specification.
Evidence for this match

NGK’s manufacturer catalogue maps CD33-12405-AA to SITR7A11G (stock number 94949). The genuine Aston Martin listing identifies its CD33-12405-AA-PK pack as NGK and includes the DB11 V12 application.

Reviewed

NGK spark plugs — supplied purchase reference

Part link

Owner-confirmed fitment

Owner-confirmed purchase references

NGK · Euro Car Parts
408870010
Application
DB11 V12. All 5.2-litre V12 models and variants.
Years
2016-2023

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

NGK identifies the manufacturer reference for CD33-12405-AA. The genuine Aston Martin pack is identified as NGK and listed for the DB11 V12. Confirm the original part number against the VIN before ordering.

Confirm the reference against your car’s VIN and current parts catalogue. Illustrations are for orientation. Linked evidence supports researched records; owner-confirmed references state the supplied source and compatibility confirmation.