Shopping security
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.
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.
Ships within 48 hours · Estimated delivery Jun 24 - Jun 29
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order