Eleventh generation · Retro roadster · 2002–2005
2003Ford Thunderbird
A retro-styled two-seat convertible evoking the 1955–1957 original; the final Thunderbird, with the name retired on July 1, 2005.
Photo: “2003 Ford Thunderbird hardtop (5409781275)” by sv1ambo / Wikimedia Commons, licensed under CC BY 2.0. Cropped to 16:9.
Quick facts
- Engines
- 1offered3.9-liter DOHC 32-valve V8
- Top output
- 280hp3.9-liter DOHC 32-valve V8
Body stylesTwo-seat convertible
Start here
What do you need to know?
This page covers the whole 2003 Ford Thunderbird model year. Choose your task first; exact trims and engines are separated where the factory offered different versions.
Complete, source-verified lineup
Find your exact 2003 Thunderbird
Start with a family, body style, or engine. Every card opens the facts and maintenance information for that factory version.
Verified complete for the U.S.-marketHow this lineup was verified
We checked this U.S.-market lineup against period sources for factory body and named-series roster with source-supported engine and transmission combinations; option packages are excluded unless Ford marketed them as distinct models. Every version shown below has its own detail page.
Verified 2026-09-01 from Ford Motor Company — 2003 Thunderbird factory sales brochure (Ford Heritage Vault AR-96-212010.4595).
Thunderbird Deluxe Convertible 3.9L V8 5AT
- Body
- Two-seat convertible
- Engine
- 3.9L DOHC 32-valve V8 (280 hp)
- Gearbox
- 5-speed automatic overdrive (SelectShift available)
- Built
- Regular production
Thunderbird Premium Convertible 3.9L V8 5AT
- Body
- Two-seat convertible
- Engine
- 3.9L DOHC 32-valve V8 (280 hp)
- Gearbox
- 5-speed automatic overdrive (SelectShift available)
- Built
- Regular production
No factory configuration matches those filters.
The 2003 model year
Overview
For 2003 Ford retained Deluxe and Premium Thunderbird convertibles but revised the 3.9-liter DOHC V8 to 280 hp and 286 lb-ft. A five-speed automatic remained standard and SelectShift manual control became optional; the removable porthole hardtop remained optional equipment.
Specifications
- Engines
- 3.9-liter DOHC 32-valve V8280 hp
- Transmissions
- 5-speed automatic overdrive, SelectShift manual-control feature (optional)
- Body styles
- Two-seat convertible
Year over year
What changed
- Engine output increased from 252 to 280 hp.
- SelectShift manual control became available for the five-speed automatic.
- Deluxe and Premium series continued with painted-versus-chrome wheel distinctions.
Worth knowing
Notable
- Ford's four brochure columns describe Deluxe/Premium with and without the removable top, but the top does not create another engine/transmission pairing.
Living with it
Reliability & ownership notes
- Verify whether SelectShift and the removable top are actually present; both were optional.
- Follow the exact 2003 scheduled-maintenance guide for the 3.9-liter V8.
Maintenance & service parts
Keep your 2003 Thunderbird on the road
Start with the service interval, then match the engine or exact version you own. Order links appear only when a catalog-backed part number is available, and every listing still needs a fitment check.
Service desk
What this car needs & when
Use this as a service-planning checklist for 2003 Ford Thunderbird. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 7
- Factory intervals
- 6
- Fitment-scoped
- 7
- Exact references
- 1
Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Engine oil and filter
Sourced interval available
Source: Ford — 2003 model-year Scheduled Maintenance Guide · Scheduled Maintenance Guide pages 10-33 — normal 5,000-mile/6-month schedule · checked
Engine air filter
Sourced interval available
Source: Ford — 2003 model-year Scheduled Maintenance Guide · Scheduled Maintenance Guide pages 10-33 — normal schedule · checked
Fuel filter
Sourced interval available
Source: Ford — 2003 model-year Scheduled Maintenance Guide · Scheduled Maintenance Guide pages 10-33 — normal schedule · checked
Cabin air filter
Sourced interval available
Source: Ford — 2003 model-year Scheduled Maintenance Guide · Scheduled Maintenance Guide pages 10-33 — normal schedule · checked
Spark plugs
Sourced interval available
Source: Ford — 2003 model-year Scheduled Maintenance Guide · Scheduled Maintenance Guide page 25 — 100,000-mile service · checked
Premium Gold engine coolant
Sourced interval available
Source: Ford — 2003 model-year Scheduled Maintenance Guide · Scheduled Maintenance Guide pages 25 and 34 — Premium Gold coolant initial and subsequent intervals · checked
Engine oil filter — catalog fitment
Exact reference available
This manufacturer application record establishes replacement-filter fitment only; it does not establish a service interval.
Baldwin B1435
Baldwin B1435
Source: Baldwin Filters — Automotive Applications catalog (2017) · Ford 2003 — Thunderbird application, printed catalog page 238, Lube column · checked
Verified ordering references
- Validated equivalentBaldwin B1435
Qty. 1 · Engine lubricating-oil filter · catalog-listed
Cataloged for the 2003 Ford Thunderbird. Confirm VIN, installed engine, and filter housing before ordering.
Catalog: Baldwin Filters — Automotive Applications catalog (2017) · Ford 2003 — Thunderbird application, printed catalog page 238, Lube column · checked
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Explore the Retro roadster generation →All Eleventh generation · Retro roadster years →