The 2003 Aston Martin DB7 has 6 drivetrain parts with verified fitment on this page — 3 part types and 5 brands, covering the 5.9L V12 engine. Each part includes a manufacturer part number and application notes.
On the 2003 Aston Martin DB7, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. All 6 listed parts are Transfer Case Main Shaft Pilot Bearing (3 parts), Gear Oil (2 parts) and Differential Pinion Bearing / Race (1 part).
The 2003 Aston Martin DB7 came with a single engine, the 5.9L V12, and every part is verified against it.
5 brands supply drivetrain parts for the 2003 Aston Martin DB7, led by IDEMITSU (2 parts), SCHAEFFLER (1 part) and WJB / INMOTION PARTS (1 part), plus 2 more brands. Quality grades include Standard Replacement and Economy.
Each part number listed for the 2003 Aston Martin DB7 opens a page with every vehicle that part fits.
Differential Pinion Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | KHM89446 | 🇺🇸 US 🇨🇦 CA | Rear Inner28.575 mm Width | View on Amazon |
This table covers the bearings and races on the differential pinion.
This group shows a single part: SCHAEFFLER KHM89446.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU | 30040093750 | 🇺🇸 US | ATF Type TLS1 Quart | View on Amazon |
| IDEMITSU | 30040093953 | 🇺🇸 US | ATF Type TLS5 Quart | View on Amazon |
This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.
IDEMITSU supplies both parts for the 2003 Aston Martin DB7.
Part numbers include IDEMITSU 30040093750 and IDEMITSU 30040093953.
Transfer Case Main Shaft Pilot Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WTA16 | 🇺🇸 US 🇨🇦 CA | Bearing & Race Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NBA16 | 🇺🇸 US 🇨🇦 CA | Bearing & Race SetIncludes Cup and Cone | View on Amazon |
| NATIONAL | A16 | 🇺🇸 US 🇨🇦 CA | Taper Bearing Set Includes Cup and Cone | View on Amazon |
This table covers the Transfer Case Main Shaft Pilot bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
3 Transfer Case Main Shaft Pilot Bearing parts for the 2003 Aston Martin DB7 come from 3 brands — WJB / INMOTION PARTS, BCA and NATIONAL.
The Economy section lists 1 option from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WTA16 is listed in this group.
In the Standard Replacement grade, BCA and NATIONAL supply 2 parts: built to original-equipment specification. A representative part number is BCA NBA16.
Listed part numbers: WJB / INMOTION PARTS WTA16, BCA NBA16 and NATIONAL A16.
Buying Drivetrain Parts for a 2003 Aston Martin DB7
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Confirm you have the 5.9L V12 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Transfer Case Main Shaft Pilot Bearing and Gear Oil .
Frequently Asked Questions
How many drivetrain parts fit the 2003 Aston Martin DB7?
Our catalog currently lists 6 drivetrain parts for the 2003 Aston Martin DB7 across 3 subcategories and 5 brands, covering the 5.9L V12 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2003 Aston Martin DB7?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2003 Aston Martin DB7 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2003 Aston Martin DB7?
Every part on this page is matched to the 5.9L V12 engine. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2003 Aston Martin DB7
Drivetrain Parts for Other Aston Martin DB7 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.