Dylannet 2.5" Universal High-Flow Catalytic Converters (2-Pack) — 13" Weld-On, Heat Shield & O2 Port

Dylannet's 2.5-inch universal high-flow catalytic converter is a weld-on, direct-fit two-piece set designed to reduce exhaust pollutants while preserving engine airflow.

This pair of catalytic converters matches many universal exhaust systems with 2.5" inlet and outlet tubing and a 13" overall length. Constructed from stainless steel and finished with precious metal coatings, the units include an integrated heat shield and an oxygen sensor port so you can maintain sensor readings and simplify installation on compatible vehicles. Note: sales are restricted in California, Colorado, New York, and Maine due to local emissions rules.

What exactly is included and what are the key specifications?

Each order contains two catalytic converters built for weld-on installation. They are engineered for 2.5-inch inlet and outlet piping and measure about 13 inches in total length, with a factory-mounted insulation board and an O2 sensor bung.

• Quantity: 2 pieces per order
• Inlet/Outlet size: 2.5 inches
• Total length: ~13 inches
• Features: welded-body design, heat shield/insulation board, O2 sensor port

How does this catalytic converter affect exhaust flow and engine behavior?

These high-flow converters use an internally optimized ceramic or metallic substrate and precious-metal coatings to balance emissions conversion with minimal backpressure. That design aims to help maintain exhaust velocity and reduce the throttle feel commonly associated with restrictive aftermarket cats.

• High-flow substrate to reduce backpressure
• Coating with palladium/platinum/rhodium for efficient conversion
• Improves exhaust flow relative to heavily clogged units
• Includes O2 port to preserve sensor readings

Is this product compatible with my vehicle and legal to use?

This product is a universal weld-on converter intended for vehicles that accept 2.5" inlet/outlet universal parts; fitment requires verifying pipe measurements and local regulations. It's sold as EPA-compliant for many states but is not available for purchase in California, Colorado, New York, or Maine where stricter standards apply.

• Confirm vehicle pipe diameter and required length before purchase
• Verify local emissions laws and inspection requirements
• Not for sale in CA, CO, NY, ME due to state rules
• Weld-on installation recommended by a professional fabricator or muffler shop

What materials, durability, and maintenance should I expect?

The housings are made from corrosion-resistant stainless steel and the internal substrate is coated with precious metals to promote long-term catalytic action. These converters are designed for extended service life under normal driving conditions, though periodic inspection of welds and sensor seals is advised.

• Exterior: high-grade stainless steel for rust resistance
• Interior: catalyst coated with platinum, palladium, and rhodium
• Heat shield reduces nearby-component heat exposure
• Inspect O2 bung seal and welds after installation

Who is this for: The Dylannet 2.5" universal catalytic converter 2-pack is aimed at DIY mechanics, exhaust shops, and vehicle owners replacing clogged or damaged converters on compatible systems. Choose this set if you need a direct-weld universal cat with an O2 sensor port, prefer stainless construction, and operate in states where this EPA-compliant unit is permitted. For installations requiring CARB certification or state-specific parts, consult a local specialist or use a certified replacement to meet inspections and warranty conditions.