Pair of 2.5in Catalytic Converters for Ford F-150 4.6L 5.4L V8
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Ford F-150 4.6L V8 (compatible custom-fit applications)
- Ford F-150 5.4L V8 (compatible custom-fit applications)
Product Overview
A rattling substrate, loss of power from exhaust restriction, efficiency codes, or a failed emissions inspection can put the converters under suspicion. Oxygen sensors, exhaust leaks, misfires, oil burning, rich fuel control, and engine coolant consumption must be corrected first or new converters can fail quickly.
These are 2.5-inch universal-style converter bodies supplied as a pair, not a guaranteed direct-bolt assembly for every F-150. Welding or fabrication may be required. Confirm pipe diameter, overall length, converter orientation, oxygen-sensor locations, vehicle emissions label, and all federal, state, and local rules before purchase.
Key Features & Performance
- Two converter bodies for dual-exhaust or paired replacement work
- 2.5-inch inlet and outlet connections
- Metal shell intended for high-temperature exhaust service
- Custom-fit format allows installation where dimensions and certification match
Replaces Part Numbers
- 99306
Common Uses
- Replacing physically damaged or internally rattling converters
- Repairing a restricted exhaust after the root engine fault is corrected
- Fabricating a compatible legal replacement exhaust layout
Technical Specifications
- Product Type: Universal-style catalytic converter pair
- Inlet Diameter: 2.5 in
- Outlet Diameter: 2.5 in
- Quantity: 2
- Installation: Custom fit / fabrication may be required
- Condition: New aftermarket parts
Installation & Fitment
- Diagnose and repair misfires, rich running, oil burning, or coolant entry first
- Verify emissions certification for the exact vehicle and installation location
- Measure pipe size, body length, clearance, and sensor placement
- Use a qualified exhaust technician for cutting, welding, leak checks, and final inspection
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Are these direct-bolt converters for every F-150? A: No. They are universal-style 2.5-inch units and may require fabrication.
Q: Will they automatically clear a catalyst efficiency code? A: No. Sensor, fuel-control, exhaust-leak, and engine problems can cause the same code.
Q: Can these be sold or installed in California? A: Emissions laws vary. Verify current local certification requirements before purchase or installation.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Ford F-150 2.5 inch catalytic converter, 4.6L V8 converter pair, 5.4L F150 exhaust catalyst, 99306 universal converter, F150 restricted exhaust repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.