Catalytic Converter for Ford Ranger (2001-2003) 3.0L 4.0L Rear
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Direct-Fit Rear Catalytic Converter for 2001-2003 Ford Ranger
What it Does: The direct-fit rear catalytic converter replaces degraded or clogged factory emissions units on the 2001-2003 Ford Ranger to restore exhaust scavenging, clear efficiency trouble codes, and reduce backpressure.
The Stock Ford Ranger Flow Restriction & Substrate Breakdown
Factory exhaust converters on aging PN105 chassis trucks endure extreme thermal expansion, road-salt exposure, and carbon contamination. Over high mileage, the original ceramic core fractures, collapses, or suffers from washcoat degradation, generating OBD-II catalytic efficiency fault codes (P0420/P0430). Furthermore, degraded OEM washcoats create severe exhaust choke points, which drive up exhaust gas temperatures (EGTs), bog down mid-range torque, and hurt fuel economy during load-bearing cycles.
The Engineering Solution
This replacement rear unit features heavy-gauge stainless steel construction engineered to resist galvanic corrosion and road deicer damage. Inside, an advanced ceramic honeycomb substrate delivers high cell density to maximize surface contact area without disrupting exhaust flow dynamics. Built with robotically welded, factory-profile inlet and outlet flanges, this assembly slips into the factory hangers and mates to the stock exhaust run using the included hardware and crush seals, restoring OEM emissions performance without custom cutting or welding.
Technical Specifications
| Fitment | 2001-2003 Ford Ranger |
|---|---|
| Engine / Chassis | 3.0L Vulcan V6, 4.0L Cologne SOHC V6 / PN105 |
| Stock Output | 154 hp / 180 lb-ft (3.0L) • 207 hp / 238 lb-ft (4.0L) |
| Replaces OEM Part # | N/A |
Compatibility
- 2001-2003 Ford Ranger XL 3.0L V6 / 4.0L V6 (Rear)
- 2001-2003 Ford Ranger XLT 3.0L V6 / 4.0L V6 (Rear)
- 2001-2003 Ford Ranger Edge 3.0L V6 / 4.0L V6 (Rear)
- 2001-2003 Ford Ranger Postal 3.0L V6 (Rear)
Frequently Asked Questions
Does this fit the PN105 Ranger?
Yes, this is a direct fit for the 2001-2003 Ford Ranger equipped with the 3.0L Vulcan V6 or 4.0L Cologne SOHC V6 engine in the rear exhaust position.
Is this catalytic converter legal for road use in California?
No, this unit is federal EPA compliant and is not legal for sale, installation, or registration in CARB-restricted states.
The Ford Truck Durability Standard
Maintaining clear, unrestricted exhaust flow is critical for the Ranger's payload capability and towing durability. This direct-replacement converter restores factory low-end pull and ensures dependable thermal management under severe utility workloads.
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