PLM Power Driven Header Downpipe w/ High Flow Cat for 2012-2015 Honda Civic Si & 2013-2015 Acura ILX - PLM-HFG4-HEADER-CAT

Upgrade your 9th generation Honda Civic Si or Acura ILX with the PLM Power Driven Header Downpipe featuring an integrated high-flow catalytic converter. Designed for naturally aspirated K-series applications, this one-piece system connects directly to the header and improves exhaust flow while maintaining compatibility with OEM cat-back exhaust systems. Built from high-quality stainless steel, it features a large 4.25-inch bellmouth design and a 200-cell metallic core catalytic converter for optimal performance and efficiency. With precision CNC mandrel bending, a braided flex pipe section, and multiple O2 sensor bungs, this setup delivers both durability and enhanced power without the need for modifications.

Key Features & Specs:

• Brand: PLM
• Part Number: PLM-HFG4-HEADER-CAT
• Series: Power Driven
• Component Type: Header Downpipe (Mid-Pipe)
• Material: Stainless Steel
• Construction: One-Piece Design
• Catalytic Converter: 200 Cell High Flow Metallic Core
• Bellmouth Size: 4.25 Inch
• Outlet Size: 3 Inch
• Flange Type: CNC Machined
• Flange Thickness: .38 Inch
• Tubing Gauge: 18 Gauge Stainless Steel
• Flex Section: Braided Flex Pipe with Interlock Liner
• O2 Sensor Ports: OEM Bungs + Additional Wideband Bung
• O2 Adapter Included: Yes
• Hardware Included: Yes (Gaskets & Hardware)
• Fitment Type: Direct Bolt-On to OEM Cat-Back
• Warranty: One Year Limited

Fitment:

• 2012-2015 Honda Civic Si (FG4)
• 2013-2015 Acura ILX