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04-06 Ford F-150 / 06 Lincoln Mark LT 5.4L Y-Pipe Catalytic Converter
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Regular price
$570.00
Sale price$469.99
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04-06 Ford F-150 / 06 Lincoln Mark LT 5.4L Y-Pipe Catalytic Converter
Direct-fit Y-pipe catalytic converter designed for 5.4L engines in these model years. This assembly handles both primary and secondary conversion in one integrated unit, restoring flow and emissions compliance after OEM failure or upgrade. Ready to bolt in place of your factory component.
✓ Ships from FL Warehouse✓ Direct-from-Warehouse✓ In-House Quality Check
Key Features
Integrated Y-pipe design - Combines primary and secondary catalytic conversion in one welded assembly, eliminating multiple connection points and potential leaks.
Engine-specific engineering - Tuned for 5.4L displacement and OEM exhaust manifold geometry to match factory scavenging and back-pressure.
Direct factory replacement - Bolts to existing mounting points without custom fabrication or adapter plates.
Will this fit my truck with a cat-back exhaust system already installed?
This Y-pipe bolts to the factory manifold flange, so it works with any downstream exhaust you've got. You'll just need to confirm your downstream piping diameter matches the outlet on this assembly — test-fit before finalizing any connections.
Do I need new gaskets and bolts to install this?
The converter itself comes as a complete assembly. Gaskets and bolts are not included — grab a set of exhaust manifold gaskets and stainless bolts rated for 5.4L applications before you start. Your truck's service manual will specify the torque spec.
What if this doesn't work or doesn't fit my setup?
Contact ModSupply's support team with photos of your fitment issue or documentation of the problem. They'll walk you through next steps — don't force it if something feels wrong during install.
* Rates from 0–36% APR. Payment options through Affirm are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lenders Law license. For licenses and disclosures, see affirm.com/licenses. For example, a $800 purchase could be split into 12 monthly payments of $72.21 at 15% APR or 4 interest free payments of $200 every 2 weeks.
**Rates from 0%-36% APR. Payment options through Shop Pay Installments, are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers https://www.affirm.com/licenses.
04-06 Ford F-150 / 06 Lincoln Mark LT 5.4L Y-Pipe Catalytic Converter
