AP / EASTERN Oe Design Catalytic Converter — direct fit for Ford F-150 Heritage 4.2L V6 (2004). Genuine quality replacement built to OEM tolerances, ships to all 50 USA states from RevXSC.
Engineered by AP / EASTERN as a oe design grade catalytic converter for the 4.2L V6 engine, this 645221 matches factory mounting points and form factor so install requires no modification. Right; 4WD Standard replacement spec — the same dimensions, materials and performance envelope as the original factory part.
Search by any number below — they all match AP / EASTERN 645221:
| Year | Make / Model | Engine | Notes |
|---|---|---|---|
| 2004 | Ford F-150 Heritage | 4.2L V6 | Right; 4WD |
Always replace catalytic converter components in matched sets where applicable, torque fasteners to factory spec, and inspect adjacent exhaust & emission components for wear during installation. If you're not sure which variant matches your VIN, send us the last 8 digits of the VIN before checkout and we will confirm fitment.
Is 645221 a direct replacement?
Yes — AP / EASTERN 645221 is built to OEM form/fit/function for the Ford F-150 Heritage 4.2L V6 (2004).
Do you ship to my state?
We ship to all 50 USA states. Tracking is provided.
What's the difference between Economy, Standard Replacement and Heavy Duty?
Economy is the value-priced option for everyday driving; Standard Replacement matches OEM spec; Heavy Duty uses upgraded materials for towing, fleet and severe service.
How can I confirm fitment?
Match year, make, model and engine (2004 Ford F-150 Heritage 4.2L V6). When in doubt, send your VIN — we verify before dispatch.
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Note: The product image is for illustrative purposes only. Actual product may vary slightly in appearance, packaging, or labeling. Fitment and specifications are guaranteed to OEM standards.