DIY Airbag Install Accessories: What You Need (2026)
Fitting your own load assist airbag kit is a straightforward bolt-on job, but the airbags are only half the system. The fittings, air line, tank and pressure control you choose around them decide whether the install holds air for years or leaks within a month.
- A quality airbag fitting kit with brass push-fit connectors is the single item that prevents most DIY leaks.
- Digital controllers like the PX01 3-button kit let you set air suspension accessories for a DIY install without guessing pressure by eye.
- A 3 gallon 9L aluminium air tank gives most single-axle load assist setups enough reserve air for daily adjustment.
- Skip cheap plastic push-fit fittings rated below 150 PSI — they crack under vibration on corrugated roads.
- Boss Air Suspension load assist kits are vehicle-specific; accessories are not, so buy them once and reuse across vehicles.
Who this is for
This guide is for owners fitting their own Boss Air Suspension load assist kit or coil assist kit at home, in a shed, or over a weekend rather than booking a workshop slot. You've got basic tools, some patience, and you want the accessories around the airbags — fittings, air line, tank, controller — sorted before you start, not halfway through with the ute up on stands. It also suits anyone upgrading an existing kit from a hand pump to a proper onboard air system.
Why this matters
An airbag itself rarely fails first. Most DIY install problems trace back to a poor-quality fitting, a kinked air line, or a pressure source that can't hold a consistent PSI under load. Getting the right load assist airbag kit sorted for your vehicle is step one — the accessories around it are what make the install last through 2026 and beyond without a comeback.
What to look for in air suspension accessories for a DIY install
Fitting kit completeness
Check whether the kit includes push-fit connectors, T-pieces, a schrader valve and mounting hardware, or just the air line. A fitting kit missing a single T-piece means a trip to the hardware store mid-install, and generic parts rarely seal as well as fittings matched to the airbag's port thread.
Air line quality and length
Standard 1/4 inch air line needs to reach from each airbag to a shared valve point without excessive coiling near heat sources like the exhaust. Buying line by the metre lets you route it properly instead of stretching a fixed-length kit across the chassis.
Pressure control method
A basic schrader valve with a hand pump works but means checking pressure with a gauge every time load changes. A digital controller reads and adjusts both sides from the cab, which matters most for anyone towing regularly or swapping between empty and loaded runs in the same day.
Onboard air source
If you're adding a 12V compressor rather than relying on a hand pump, the compressor needs to be sized to fill your tank and airbags in a reasonable time, and wired with proper fuse protection rather than tapped straight off the battery.
Air storage capacity
An aluminium air tank buffers pressure so the compressor doesn't cycle constantly and gives you enough stored air to top up bags without waiting on the compressor mid-adjustment. Tank size should match how often you expect to change load, not just the total volume of your airbags.
Drain and moisture management
Compressed air carries moisture. A tank without a drain point or water trap will corrode fittings and valves faster, especially in coastal or humid conditions common across Australia.
Top picks for a DIY installation
The non-negotiable — airbag fitting kit A proper airbag fitting kit covers the push-fit connectors and hardware most DIY installs are missing when they buy line separately. Rated fittings hold pressure reliably where generic hardware-store parts often don't. Buy — this is the accessory that stops a leak call-back before it starts.
The pressure control upgrade — digital airbag inflation kit The digital airbag inflation kit PX01 3-button reads pressure on both sides and lets you adjust from the cab instead of crawling under the vehicle with a gauge. It suits anyone who tows or loads up more than occasionally in 2026, where checking pressure by feel isn't precise enough. Buy — if you're already fitting a kit, doing the controller at the same time saves a second install session later.
The storage buffer — 3 gallon 9L aluminium air tank The 3 gallon 9L 5-port aluminium air tank gives most single-axle setups enough stored air to adjust pressure without waiting on the compressor to catch up. Five ports also give room to add a pressure switch or in-cab gauge later without re-plumbing. Consider — skip it if you're only running a manual pump and adjusting pressure once a trip.
The all-in-one option — Boss Auto Pressure Controller Kit with PX06 compressor This pressure controller kit bundles a 9L tank, PX06 compressor, water trap and Nitto coupling fittings in one package, which suits a first-time onboard air install where buying components separately feels like guesswork. It's a bigger spend up front but avoids compatibility mismatches between tank, compressor and fittings. Buy — best for a full onboard air build rather than a bare-minimum load assist install.
What to avoid
- Generic plastic push-fit fittings rated under 150 PSI — they look identical to brass fittings but crack over time on corrugated roads and in temperature swings.
- Undersized air line runs — using leftover line from another job that's too short forces sharp bends near the airbag ports, which is a common cause of slow leaks.
- Skipping a water trap on a compressor-fed system — moisture in the line corrodes valves and fittings faster than most owners expect, especially with regular use.
Verdict comparison
| Accessory | Best for | Key spec | Verdict |
|---|---|---|---|
| Airbag fitting kit | Any DIY install missing fittings | Push-fit connectors + T-pieces | Buy |
| Digital airbag inflation kit PX01 | Regular towing or load changes | 3-button in-cab control | Buy |
| 3 gallon 9L aluminium air tank | Onboard air with a compressor | 5-port, bare tank | Consider |
| Boss Auto Pressure Controller Kit (PX06) | First-time full onboard air build | Tank + compressor + water trap bundled | Buy |
FAQ
What accessories do I need for a DIY airbag installation?
At minimum you need a fitting kit with push-fit connectors, air line, and a way to check pressure such as a gauge or digital controller. Most DIY installs in 2026 also add an aluminium air tank and 12V compressor for onboard air rather than relying on a hand pump.
Can I install a load assist airbag kit myself?
Yes, Boss Air Suspension load assist kits are designed as a bolt-on installation using the existing suspension mounting points. Basic hand tools and an afternoon are usually enough, provided the fitting kit and air line are sorted before you start.
Do I need a compressor for a load assist kit?
No, a hand pump or portable inflator can adjust airbag pressure manually. A 12V compressor and tank are accessories that make pressure adjustment faster and more consistent, particularly if you tow or load up often.
What size air tank do I need for onboard air?
A 1 to 2 gallon tank suits basic load assist adjustment, while a 3 to 5 gallon tank suits onboard air systems also feeding accessories like tyre inflation. Match tank size to how often you'll draw air, not just total airbag volume.
Is a digital controller worth it for a DIY airbag install?
A digital controller is worth it if you adjust pressure regularly for towing or load changes, since it reads both sides from the cab instead of requiring a gauge check under the vehicle. For occasional use, a manual schrader valve setup is adequate.
What causes air suspension leaks after a DIY install?
Most leaks trace back to generic push-fit fittings rated below 150 PSI, kinked air line near heat sources, or a missing water trap letting moisture corrode valves. Using a matched fitting kit avoids most of these issues.
How much does a full onboard air accessory setup cost?
A basic fitting kit and air line run under A$100, while a complete pressure controller kit with tank, compressor and fittings sits in the A$500 to A$600 range as of 2026. Pricing depends on tank size and whether a digital or analog controller is chosen.
Are Boss Air Suspension accessories vehicle-specific?
No, fittings, air line, tanks and controllers work across vehicles regardless of make or model, unlike the load assist kits themselves which are matched to specific suspension setups. This means accessories bought for one vehicle can be reused if you change vehicles.
One last thing
The accessory owners skip most often is the water trap, and it's the one that causes the slowest, hardest-to-diagnose leaks. Moisture sitting in a tank or line for months corrodes valve seats gradually rather than failing outright, so by the time you notice a slow pressure drop, the fitting itself may already need replacing. A A$12 to A$20 drain cock or water trap fitted at install time avoids that entirely.
