The Airbag Man Air Suspension Helper Kit fits Nissan Navara D21 (1986-1997) models running the factory leaf spring rear end, adding adjustable air support alongside the existing leaf pack rather than replacing it. Air pressure is fully adjustable from empty to loaded through external inflation valves, so you dial in exactly enough support to correct sag from a tray load, canopy or caravan ball weight. It works alongside your existing leaf springs to restore level ride height rather than requiring a full spring swap. In stock in Australia now, backed by manufacturer warranty and fitment support from our team.
Browse all compatible suspension parts for your Air Suspension Helper Kit Nissan Navara using our parts finder.
| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Nissan | Navara | D21 | 1986-1997 | All leaf spring rear variants (petrol & diesel) |
Not sure if this fits your vehicle? Contact our suspension experts or check our FAQ page.
Because this kit works alongside your factory leaf springs rather than replacing them, the key decision is air pressure, not spring rate. Run higher pressure when carrying a heavier constant load — a fitted canopy, tool boxes, water tank, or a loaded caravan tow ball — and reduce pressure for lighter or unladen running. Common accessories that push owners toward this kit include tray bodies, service bodies, dual battery and fridge setups, and van or caravan towing where rear sag is noticeable.
Fitment is a bolt-on job suited to an experienced DIY installer with basic hand tools, or your usual workshop if you'd rather have it done professionally. No welding or drilling of the chassis is required, as brackets locate off the existing leaf spring perch and U-bolts. Wheel alignment is not typically required after fitting since the kit doesn't change ride height or suspension geometry when deflated. If you're also chasing a static lift or改善 handling at height, look at pairing this kit with upgraded control arms or a dedicated leaf spring upgrade.
Airbag Man is an Australian-designed air suspension brand built specifically for local towing and load-carrying conditions, with a rubber air spring design tested on Australian roads and tracks. Every kit is backed by manufacturer warranty and supported by our team for fitment questions specific to your Navara D21. Tourers, tradespeople and caravan owners across Australia run Airbag Man kits to keep their rear end level under variable loads — view the full Airbag Man range for other applications.
This kit suits Navara D21 owners who regularly carry a variable load — tradespeople with a loaded tray or canopy, tourers running a rooftop tent and drawers, and anyone towing a van or trailer off the tow ball. If your rear end sags noticeably only when loaded and returns to normal unladen, an airbag suspension helper kit is a targeted fix rather than a full spring or shock replacement.
This kit is in stock in Australia now, ready for fast dispatch, with our team on hand for fitment questions specific to your D21. Browse our full lift kit range if you're also considering a static suspension upgrade alongside this load-leveling kit.
New to Navara suspension? Read our guide to common Navara suspension problems and how to fix them.
Yes, this Airbag Man Air Suspension Helper Kit is built for Nissan Navara D21 models (1986-1997) with factory leaf spring rear suspension. It mounts using the existing leaf spring perch and axle location, so no chassis modification is required. If your D21 has been modified with a different rear end or aftermarket leaf springs, check with our team before ordering. Our fitment support team can confirm compatibility for your exact setup.
This kit is not a static lift kit — it's a load-leveling helper that works through adjustable air pressure. Deflated, it has no effect on ride height, and inflated it restores factory ride height under load rather than raising the vehicle permanently. If you're after an actual lift in inches, look at a dedicated leaf spring upgrade or our broader lift kit range instead.
The kit includes 2 x Airbag Man air springs, upper and lower mounting brackets, U-bolts and hardware for the leaf spring perch, a braided air line kit, and 2 x chassis-mounted inflation valves. Full fitting instructions are included in the box. An air compressor or manual inflation pump is not included and needs to be sourced separately. See the full kit contents list on this page for exact quantities.
Yes, this is one of the most common uses for the kit. Adjustable air pressure lets you add support specifically to counter tow ball weight from a caravan or trailer, correcting rear sag and helping keep headlight aim and handling closer to normal. Many D21 owners run the kit deflated when unladen and inflate it only when hooked up to a van. It's a targeted fix for tow-related sag rather than a full suspension rebuild.
Not for this kit specifically, since it doesn't change suspension geometry or ride height when deflated. Control arm upgrades are more relevant if you're also fitting a static lift kit that changes suspension travel or angles. If you're combining this helper kit with other suspension upgrades, our team can advise whether control arm upgrades are needed for your combination.
Generally no, because this kit doesn't alter the Navara D21's factory ride height or suspension geometry — it simply adds adjustable air support alongside the existing leaf springs. If you're fitting this kit alongside a lift kit or other geometry-changing suspension work, a wheel alignment is recommended at that point. For a standalone helper kit installation, alignment isn't a mandatory step.
This kit doesn't use a fixed spring rate — instead you control support level by adjusting air pressure in the bags via the external inflation valves. Run more pressure for heavier constant loads like a canopy or tray body, and less for lighter or unladen driving. If you need a permanent spring rate change rather than adjustable support, a dedicated leaf spring upgrade is the better option.
This kit doesn't raise ride height, so it won't create additional tyre clearance on its own. Tyre fitment depends on your current wheel arch clearance, offset and any separate lift kit fitted to the vehicle. If you're planning larger tyres, talk to our team about pairing this helper kit with a genuine lift kit for the clearance you need.
This Airbag Man kit is covered by manufacturer warranty against defects in materials and workmanship. Exact warranty terms are confirmed at the time of purchase and cover the air springs and supplied hardware. Our team can provide the specific warranty documentation for RR4577 on request, and we're on hand for any fitment or warranty questions after purchase.
Yes. Run the air springs deflated for everyday unladen driving and there's no change to your D21's normal ride comfort or handling. When you're carrying a load or towing, inflate the bags to add support and reduce sag, then deflate again once the load is removed. This makes it a practical option for daily drivers that only carry heavy loads occasionally.
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