Parts for your 1999 Nissan Navara-Exhaust mount

1999 Nissan Navara Exhaust Mount: Purpose, Care, and Replacement

Based on technical references including the Nissan D22 Navara/Frontier Service Manual (Exhaust System section) and the Nissan FAST electronic parts catalogue, the 1999 Nissan Navara is fitted with exhaust mounts (also called exhaust hangers or insulators). These rubber insulators and brackets support the exhaust from the downpipe through to the tailpipe, so an exhaust mount is absolutely relevant to this model.

On a ’99 Navara ute, the exhaust mounts do the unglamorous but vital job of holding the system at the correct height and angle while isolating vibration. They let the exhaust expand and move with heat and rough-road flex without transferring harshness into the cabin or cracking pipes and welds. Typically there are three to five mounts depending on engine, cab, and tray configuration, positioned near the front pipe, muffler, and tail section.

As part of regular servicing, it pays to check these mounts every 10,000–15,000 km or at each oil change. Rubber ages: it hardens, cracks, or sags, especially around the hot muffler area. Common clues they’re on the way out include tailpipe droop, knocks over bumps, rattles at idle, or a thud on start-up or shutdown. If a mount fails completely, the exhaust can contact the chassis or drivetrain, leading to accelerated wear or even damage to sensors and flanges.

Replacement is straightforward with basic tools:

• Safely support the exhaust with a jack and a timber block so there’s no strain on the remaining mounts.
• Soak the old rubber insulators and studs with penetrating spray, a smear of silicone spray helps slide the new ones on.
• Inspect brackets for cracks and rust, replace or repair as needed before refitting.
• Refit without pre-loading the system—check clearances to the chassis, diff, torsion bars, and spare wheel.

For replacement parts, OE-style rubber insulators maintain factory NVH balance. Polyurethane options are tougher and can last longer off-road, but if they’re too firm they may add a bit of drone. Whichever way they go, a matched set left-to-right helps keep the system aligned. After fitting, start the Navara, give the system a gentle shake test, and verify it doesn’t touch heat shields or crossmembers through the rev range.

Popular questions about 1999 Nissan Navara exhaust mounts

How many exhaust mounts does a 1999 Navara have?
Most D22 Navaras run three to five mounts depending on engine and body style. Expect one near the front pipe, one around the muffler, and one or two supporting the rear section. The exact count can vary with petrol vs diesel and cab/tray setup.

How often should the exhaust mounts be replaced?
There’s no fixed interval, but it’s smart to inspect them at each service and replace when the rubber shows cracks, splits, hardening, or the exhaust sits off-centre. Many owners find they last several years, heavy towing, corrugations, and heat can shorten that.

What are the signs of a failing exhaust mount on a Navara?
Listen and look for a low-speed rattle, clunks over bumps, a droning note that wasn’t there before, tailpipe droop, or visible cracking in the rubber. If the pipe touches the chassis or heat shields, the mounts are likely tired or misaligned.