Alternative part detail / DB7
Six-speed manual gearbox
Public compatibility, sourcing and modification information for this alternative part.
Reported compatibility
- i6
- No
- V12
- Yes
Part numbers
- Original part number
- 41-121996-AA
- Alternative part number
- Tremec T56
Modification required
What needs to change
Tremec T56 is the gearbox family. Confirm the Aston Martin assembly specification, ratios, input/output shafts and mounting details; a Dodge T56 is not established as a direct replacement.
Catalogue research, 14 September 2026: Manufacturer application catalogue identifies Tremec T56, not TR56. Shared gearbox family does not establish interchange with a Dodge assembly.
Sources:
https://www.drivparts.com/content/dam/marketing/North-America/catalogs/national/pdf/national-master-application-listings.pdf
Confirm the original part, vehicle specification and installation requirements before ordering.
Sourcing information
- Manufacturer / supplier
- Dodge
- Indicative cost
- Not stated
Information review
Become a member or sign in to see AstonDIY's review notes and the evidence behind this record.
AstonDIY members
Owner fitment reports
Become a member or sign in to read detailed fitment comments, vehicle details and supporting photographs.
- Detailed installation and modification comments
- The model, year and variant attached to each report
- Supporting fitment photographs when supplied