Parts for your 2014 Nissan Navara-Exhaust gasket

2014 Nissan Navara exhaust-gasket: what it does and when to replace it

For the 2014 Nissan Navara (D40), exhaust gaskets are very much a thing. Nissan’s D40 Factory Service Manual (EX and EM sections) specifies gaskets at the exhaust manifold-to-cylinder head, turbocharger connections on YD25DDTi diesels, and at exhaust pipe flanges. The Nissan FAST electronic parts catalogue and mainstream exhaust catalogues (e.g., Walker, Bosal) list multiple gasket options for this model. So, yes—exhaust gaskets are relevant and fitted to the 2014 Navara.

On the Navara, exhaust gaskets seal hot gas paths so the system stays quiet, safe, and efficient. The manifold gasket keeps combustion gases from escaping at the head, which protects performance and prevents that tell‑tale ticking noise. Diesel models also use a gasket at the turbo outlet and usually a donut or flange gasket at the front pipe joints. Proper sealing keeps turbo response crisp, helps the ECU’s fuelling stay on point, and stops fumes sneaking into the cabin.

When servicing, it’s smart to check for leaks and soot staining around joints and flanges. Common signs include a cold-start tick, a hiss under load, sulphury or diesel smells, black soot at a joint, sluggish spool on turbo models, and sometimes a slight drop in fuel economy. If any exhaust part is removed—manifold, turbo, cat/front pipe—replace the disturbed gaskets. Re-using old ones is false economy, once compressed and heat-cycled, they rarely reseal properly.

Replacement tips that suit Aussie and Kiwi conditions:

• Use quality MLS/graphite or OEM-spec gaskets and new hardware (studs, nuts, spring bolts where used).
• Clean mating faces to bare metal, check for warpage, and follow the FSM torque specs and sequence—no random guessing with a spanner.
• Avoid sealants unless the factory procedure specifically calls for them. Many exhaust joints are designed to seal dry.
• Pre-soak rusty fasteners, protect O2/EGT sensors, and ensure flanges are aligned before tightening. On spring-bolt donut joints, tighten evenly to avoid crushing the gasket unevenly.
• After a few heat cycles, a quick visual recheck for soot tracks or weeps is worthwhile.

With these basics handled, the Navara’s exhaust will stay quiet, legal, and happy—helping the YD25 or petrol V6 pull cleanly whether it’s towing the boat or heading bush.

Popular questions about 2014 Nissan Navara exhaust-gasket

Does the 2014 Navara have both manifold and donut/flange gaskets?
Yes. The D40 uses a manifold-to-head gasket, and most variants also use flange or donut-style gaskets at pipe joins. YD25DDTi diesels add turbo-related gaskets. This layout is documented in the D40 service manual and parts catalogue.

How often should exhaust gaskets be replaced on a 2014 Navara?
There’s no fixed interval. Replace any exhaust gasket whenever the joint is disturbed or if there’s a leak. During routine servicing, inspect for ticking, soot, or smells and act promptly to prevent warped flanges or cooked studs.

Can high-temp sealant be used instead of the proper gasket?
Not recommended. The Navara’s exhaust joints are designed around specific gasket materials and clamp loads. Use sealant only where the factory procedure calls for it, otherwise, fit the correct gasket and torque hardware to spec.