04-06 Ford F-150 / 06 Lincoln Mark LT 5.4L Y-Pipe Catalytic Converter
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
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.
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.
Specs
- Configuration: Y-pipe, dual-catalyst integrated assembly
- Engine: 5.4L naturally aspirated
- Condition: New
What's Included
- Y-pipe catalytic converter assembly
Frequently Asked Questions
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.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.