Gauges & Monitoring

A good gauge takes the guesswork out of driving, touring and maintenance. Our Gauges and Monitoring collection gathers the instruments Australian 4WD owners, tradies, caravanners and enthusiasts use to keep tabs on tyre pressures, engine health, battery charge and what is happening behind the vehicle. From simple tread-depth rulers and digital tyre gauges to wideband air-fuel ratio gauges, reversing camera monitors and OBD2 head-up displays, this range helps you measure what matters and act before small issues turn into breakdowns on the highway or out on the track.

Tyre Pressure and Tread Gauges

Correct pressures keep tyres safe, even-wearing and fuel-efficient. The range includes digital tyre pressure gauges reading up to 250PSI, rapid deflators with a built-in pressure gauge, and multi-hose inflation and deflation systems that equalise all four tyres at once. Stainless steel tyre tread depth gauges, marked from 0 to 30mm, and combined tread and brake pad gauge sets let you check wear against the legal limit, so you know when a tyre or a set of pads is due for replacement.

Engine and Performance Gauges

For tuners and towing setups, accurate engine data is essential. Choose from 52mm, or 2-1/16 inch, wideband air-fuel ratio gauges running an LSU 4.9 O2 UEGO sensor for AFR tuning, turbocharger boost gauges supplied with silicone hose and fittings, and water temperature gauges to watch coolant on long climbs. To keep your electrical system healthy, add a 12V or 24V voltmeter battery tester, a cigarette-lighter battery tester, or an LCD 12V to 48V battery capacity indicator that suits caravan and dual-battery setups.

Cameras, Displays and Head-Up Displays

Modern monitoring goes well beyond a single dial. Reversing camera kits with 7 inch split screens and four channels suit trucks, trailers and buses, while 3-in-1 reversing camera and parking sensor systems help with tight, everyday parking. Universal Android car stereos in 7, 9 and 10 inch sizes bring GPS navigation, wireless CarPlay, Bluetooth and mirror link to the dash, and OBD2 or GPS head-up displays project your speed and alerts onto the windscreen for eyes-forward driving.

Diagnostic and Measuring Tools

The collection also covers the specialist instruments that make maintenance and inspection easier. A hand-held vacuum pump brake bleeder and pressure tester makes solo brake bleeding straightforward, a diesel injector nozzle pressure tester reading up to 600 Bar helps diagnose injector faults, and a digital coating thickness gauge measuring 0 to 2000 microns reveals filler and repaint work when buying a used vehicle. For offroad driving, an inclinometer or angle and slope meter with a compass shows pitch and roll on steep terrain.

Choosing and Installing Your Gauges

Start with what you need to know: pick 52mm gauges to match standard pods and pillar mounts, choose a monitor size to suit your dash space, and confirm 12V or 24V compatibility for your vehicle. Many gauges wire into switched power with a sender or sensor, so plan a tidy earth and run looms away from heat. Keep sensors clean, calibrate where the product allows, and store handheld gauges in their cases to protect their accuracy over time.

  • Checking tyres and pads: digital tyre gauge and tread depth or brake pad gauge
  • Tuning and towing: wideband AFR gauge, boost gauge and water temp gauge
  • Battery and caravan setups: 12V to 48V capacity indicator or voltmeter tester
  • Parking and reversing: reversing camera monitor or parking sensor kit
  • Eyes-forward driving: OBD2 or GPS head-up display

From a quick tyre check before a road trip to full engine and camera monitoring for touring and towing, 4wdstore.au has the gauges and monitoring gear to keep you informed and in control. Explore the range, compare gauge sizes and features, and fit your vehicle with instruments built for Australian roads and tracks.

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Gauges & Monitoring — FAQ

Which gauges and monitors should I start with for a 4WD or tow rig?

Start with the readings that keep you safe and informed, such as a digital tyre pressure gauge, a battery voltage monitor for your dual battery or caravan setup, and a reversing camera or parking sensor system for larger vehicles. From there you can add performance and safety displays like a wideband air fuel ratio gauge or an OBD2 head-up display. Choosing a few key monitors first lets you build a setup that matches how you drive and tour.

Will these gauges and camera systems fit my vehicle?

Many items here are designed to be universal, including 52mm and 2-1/16 inch gauges, 7 to 10 inch Android head units, and OBD2 plug-in displays that suit most modern vehicles. Reversing and multi-channel camera kits are built for cars, trucks, trailers and buses, so check the screen size, mounting style and voltage range against your vehicle before fitting. If you are unsure, compare the listed dimensions and connections to your dash space and wiring.

How accurate are the digital pressure and voltage monitors?

The digital tyre gauge reads up to 250 PSI with a clear LED display, making it easy to set precise pressures when airing up or down. The 12V to 48V battery capacity monitor gives you a live voltage readout so you can keep an eye on your starter, dual or caravan batteries. For consistent results, take readings when conditions are stable and check them against a trusted reference from time to time.

What is involved in installing a head-up display or reversing camera?

An OBD2 head-up display typically plugs into the vehicle diagnostic port and sits on the dash, which makes it one of the simpler upgrades to fit. Reversing cameras and parking sensor systems need the camera mounted at the rear, a monitor at the front, and wiring run between them, often tied to the reverse circuit. Take your time routing cables neatly, and consider professional help if you are not comfortable with vehicle wiring.

How do I keep dash-mounted gauges and screens in good condition?

Wipe screens and gauge faces with a soft, dry or slightly damp microfibre cloth and avoid harsh solvents that can haze the display. Keep camera lenses clean for clear night vision and reversing images, and make sure mounts and suction holders are secure so nothing rattles loose on corrugations. A quick check of connections and brightness settings now and then keeps everything easy to read on the move.