Exhaust Manifold Gasket

The Honda OEM 18115-PNB-003 is a genuine exhaust manifold gasket engineered for K-series engines, specifically K20 and K24 platforms. This direct replacement for the factory gasket ensures an airtight seal, which is crucial for restoring lost power, improving fuel economy, and eliminating distracting exhaust leaks from the cabin. The precision-stamped fire rings perfectly match the factory port shape, making it suitable for both stock exhaust manifolds and aftermarket headers that retain the OEM flange pattern. It is ideal for daily drivers, track cars, and boosted builds where a reliable seal is paramount. Installation is considered DIY-friendly, typically taking 30-45 minutes. It requires only the gasket itself, with the reuse of factory studs and nuts. No additional tuning or modifications are necessary for installation. This gasket is compatible with a range of Honda and Acura models, including the 2004-2008 Acura TSX, 2002-2006 Acura RSX, 2003-2007 Honda Accord (2.4L), 2002-2011 Honda Civic Si and select trims, 2002-2006 Honda CR-V, and 2003-2011 Honda Element.