The 2003 Aston Martin Vanquish has 9 engine parts with verified fitment on this page — 2 part types and 3 brands, covering the 6.0L V12 engine. Each part includes a manufacturer part number and application notes.
On the 2003 Aston Martin Vanquish, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. All 9 listed parts are Crankshaft Seal (6 parts) and Crankshaft Repair Sleeve (3 parts).
The 2003 Aston Martin Vanquish came with a single engine, the 6.0L V12, and every part is verified against it.
3 brands supply engine parts for the 2003 Aston Martin Vanquish, led by NATIONAL (4 parts), WJB / INMOTION PARTS (3 parts) and BCA (2 parts).
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2003 Aston Martin Vanquish. 1 part has it: NATIONAL 3909 (Crankshaft Seal). Each part number opens a page with every vehicle that part fits.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS99363 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| NATIONAL | 99363 | 🇺🇸 US 🇨🇦 CA | RearShaft Diameter: 3.625" | View on Amazon |
| WJB / INMOTION PARTS | WS99363 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
3 Crankshaft Repair Sleeve parts for the 2003 Aston Martin Vanquish come from 3 brands — BCA, NATIONAL and WJB / INMOTION PARTS.
Part numbers include BCA NS99363, NATIONAL 99363 and WJB / INMOTION PARTS WS99363.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular | 3909 | 🇺🇸 US 🇨🇦 CA | RearViton Type | View on Amazon |
| BCA | NS5277 | 🇺🇸 US 🇨🇦 CA | PTFE Rubber | View on Amazon |
| NATIONAL | 350823 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| NATIONAL | 5277 | 🇺🇸 US 🇨🇦 CA | PTFE Rubber | View on Amazon |
| WJB / INMOTION PARTS | WS3909 | 🇺🇸 US 🇨🇦 CA | RearViton Type | View on Amazon |
| WJB / INMOTION PARTS | WS5277 | 🇺🇸 US 🇨🇦 CA | PTFE Rubber Material | View on Amazon |
This table covers the front and rear seals that keep oil in at the crankshaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
6 Crankshaft Seal parts for the 2003 Aston Martin Vanquish come from 3 brands — NATIONAL, WJB / INMOTION PARTS and BCA. The "Popular" part is NATIONAL 3909.
Part numbers include NATIONAL 3909, BCA NS5277 and NATIONAL 350823, among others listed above.
Buying Engine Parts for a 2003 Aston Martin Vanquish
On this vehicle, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.
- Confirm you have the 6.0L 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Crankshaft Seal and Crankshaft Repair Sleeve .
Frequently Asked Questions
How many engine parts fit the 2003 Aston Martin Vanquish?
Our catalog currently lists 9 engine parts for the 2003 Aston Martin Vanquish across 2 subcategories and 3 brands, covering the 6.0L V12 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2003 Aston Martin Vanquish?
Common symptoms include oil spots under the vehicle, blue or white exhaust smoke, ticking from the valvetrain, or coolant mysteriously disappearing. 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
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 Vanquish 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 Vanquish?
Every part on this page is matched to the 6.0L V12 engine. Then engine hard parts are unforgiving of guesswork — confirm the casting or engine code before ordering, because one model year can hide two different blocks. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2003 Aston Martin Vanquish
Engine Parts for Other Aston Martin Vanquish 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.