Parts for your 2014 Honda Stream-Manifold gasket

2014 Honda Stream manifold gasket – what it does, why it matters, and when to swap it

Based on technical sources including Honda’s Electronic Parts Catalogue for RN6–RN9 Stream models and the factory service manual procedures for Intake Manifold and Exhaust Manifold, the 2014 Honda Stream is fitted with manifold gaskets (intake and exhaust). These documents specify dedicated gaskets that are replaced when manifolds are removed or when leaks are found, so a manifold gasket is absolutely relevant on this model.

On a 2014 Honda Stream, the manifold gasket does the quiet, important work of sealing. Up top, the intake manifold gasket keeps unmetered air from sneaking into the engine, so fuelling stays spot on and idle stays smooth. Downstream, the exhaust manifold gasket seals hot gases at the cylinder head, preventing noisy blow-by, protecting oxygen sensor readings, and keeping fumes out from under the bonnet. Honda typically uses multi-layer steel or high-temp composite gaskets here, built to take heat cycles and vibration.

They’re not a scheduled replacement item, but they are a “replace when disturbed” part. Any time the intake or exhaust manifold comes off—say for plug access on some engines, cleaning carbon, or replacing a catalytic converter—new gaskets should go in. Reusing a crushed metal gasket is a false economy, it can end in leaks, lost power, and annoying engine lights.

Under day-to-day servicing, it’s smart to keep an ear and nose out for tell-tales:

• Ticking or puffing from the exhaust side on cold start that quietens warm
• Hiss, rough idle, or a lean-running feel from the intake side
• Soot traces around the exhaust flange, or a whiff of exhaust under the bonnet
• Higher fuel use and a general loss of pep

Best-practice when replacing: clean mating faces carefully, check flange flatness, fit quality OEM or equivalent gaskets, and tighten to spec in the proper sequence. If the exhaust hardware is crusty, fresh studs and copper nuts are worth it. On the intake side, consider a new throttle body gasket at the same time—it’s cheap insurance. Most jobs are a few hours for a competent tech with the right spanners, and genuine-style gaskets are affordable across Australia and New Zealand.

If the Stream is looked after this way, it’ll stay quiet, efficient, and happy on long Kiwi and Aussie kilometres.

Popular questions about 2014 Honda Stream manifold gaskets

Does a 2014 Honda Stream actually have manifold gaskets?
Yes. The RN6–RN9 Stream uses both intake and exhaust manifold gaskets. Honda’s service information and parts listings show these as replace-once-disturbed components, used to keep the engine sealed and sensors reading correctly.

What symptoms point to a bad manifold gasket on a 2014 Stream?
Common signs include a ticking or puffing noise at the exhaust manifold (especially on cold start), a hiss or rough idle from the intake side, fuel economy dropping off, or soot marks around the exhaust flange. Any exhaust smell under the bonnet is a red flag to sort quickly.

Should manifold gaskets be changed as routine maintenance?
They’re not a regular interval item. They’re replaced when a manifold is removed or if there’s a confirmed leak. During routine services, a quick inspection and a listen under the bonnet is enough, replace proactively only if there’s evidence of leakage or the manifold has been off.