Parts for your 2013 Honda Stream-Exhaust gasket

2013 Honda Stream exhaust gasket

Technical sources such as the Honda Stream RN6–RN9 service manual (Exhaust System and Cylinder Head sections) and Honda’s electronic parts catalogue show that the 2013 Honda Stream is fitted with multiple exhaust gaskets. These include a multi‑layer steel (MLS) exhaust manifold-to-cylinder head gasket, a ring or “donut” gasket between the manifold/catalyst outlet and front pipe, and flat flange gaskets further down the system. So an exhaust gasket is absolutely relevant to this model.

On the 2013 Honda Stream, the exhaust gaskets seal the hot gas path from the engine through the catalytic converter and along the pipes to the muffler. Their job is to keep the system gas-tight so exhaust doesn’t leak into the cabin, oxygen sensor readings stay accurate, and the engine maintains proper backpressure for smooth running. The manifold gasket is metal and built to handle heat cycles right at the head, while the front pipe uses a compressible ring that accommodates movement and vibration.

Replacement is generally needed when there’s a tick at cold start, a sooty mark around a joint, a sharp exhaust smell near the front of the car, or a faint hiss that rises with revs. Any time the exhaust is separated—for example, for a clutch, gearbox, or catalyst job—new gaskets should be fitted. Reusing old ones often leads to leaks.

Good practice on this Honda includes:

• Inspecting the manifold area and front pipe joints at regular services, especially past 100,000 km.
• Using OEM or equivalent MLS for the head joint and the correct-spec donut for the front pipe.
• Following the workshop manual torque and tightening sequence, start from the centre and work out on the manifold.
• Avoiding sealants unless the service manual explicitly allows a sensor-safe, high-temp product—most joints are designed to seal dry.
• Replacing studs, springs, and nuts if corroded, seized hardware is common where the catalyst bolts to the front pipe.

Kept in good nick, the Stream’s exhaust gaskets help maintain fuel economy, keep the cabin quiet, and prevent WOF/RWC hassles. A tidy seal also protects the oxygen sensors from false readings that can trigger a CEL and rich or lean running.

Popular questions about 2013 Honda Stream exhaust gaskets

Where are the exhaust gaskets located on a 2013 Honda Stream?
They’re at the cylinder head-to-manifold joint, the outlet of the manifold/catalyst to the front pipe (a donut-style ring), and at flange joints further back toward the centre pipe and muffler. The exact count depends on trim and market, but those key points are consistent across RN6–RN9.

How often should exhaust gaskets be replaced?
There’s no fixed interval, they’re replaced on condition or whenever a joint is undone. With age, heat cycles, and corrosion, they can harden or lose tension. After about 100,000–150,000 km, it’s wise to inspect them closely during servicing, especially if there are any noises or odours.

Can an exhaust leak cause a WOF/RWC fail or engine issues?
Yes. In NZ and Australia, noticeable exhaust leaks can lead to a WOF/RWC fail due to fumes and noise. Leaks upstream of the oxygen sensors can also skew sensor readings, causing poor fuel economy, a rough idle, and a check engine light.