ARB Twin Compressor: Features & Installation Guide

Off-roading often means airing down for soft terrain and airing back up when you hit the road. For this, you need reliable onboard air. The ARB Twin Compressor is one of the most trusted systems for fast inflation, powering tools, and running air lockers.

This guide explains how the system works, its key features, and how to install it safely and correctly.

What Is the ARB Twin Compressor?

The ARB twin compressor uses two compressors working together.
This setup delivers:

• Faster air output

• Shorter recovery times

• Higher durability

• Backup operation if one compressor fails

It’s a strong choice for long trips, harsh terrain, and any adventure where you need dependable onboard air.

Why Choose a Twin Compressor System?

Compared to a single compressor, the ARB dual setup offers major advantages:

1. Faster Tire Inflation

• More air volume

• Quicker fill times

• Great for large tires (33–37 inch)

2. Better Performance Under Heavy Use

• Load is shared between two motors

• Less heat build-up

• Longer compressor life

3. Built-In Redundancy

• If one unit stops working, the other keeps running

• Important for remote travel

4. Powers More Accessories

• Air lockers

• Air tools

• Blow guns

• High-pressure equipment

ARB Twin Compressor: Key Features

Advanced Motor Design

• High-performance 12V motors

• Built for long run times

• Thermal protection to prevent overheating

• Cooling fins for better airflow

ARB 4x4 air compressor

Strong, Durable Construction

• Cast-iron compressor heads

• Precision-machined cylinders

• Stainless steel reed valves

• Powder-coated body for corrosion resistance

Performance Highlights

• Inflates a 35” tire from 15–30 PSI in under 3 minutes

• Up to 200 PSI maximum pressure

• Works well at 12.5V or 14.4V

• Stable performance even during long cycles

Smart Control System

• Automatic shut-off

• Thermal overload protection

• Balanced operation between the two compressors

• Pressure switch control for tank systems

ARB Brushless Twin Motor On-Board 12V Air Compressor Kit

Planning Your ARB Air System Install

Check Your Vehicle First

Make sure your vehicle has:

• Enough space (under hood, rear cargo, or custom-mounted box)

• Good airflow around the compressor

• A strong electrical system (battery + alternator)

• Safe wiring routes

The ARB twin compressor draws high current, so proper wiring is important.

What You Need to Install

A complete twin compressor setup usually includes:

• Vehicle-specific mounting bracket

• Heavy-duty wiring harness

• 40A fuses and relays

• Air lines (DOT-approved)

• Switch panel

• Air tank (optional but recommended)

• Pressure gauge, release valve, and drain valve

Choosing the Right Air Tank

Air tanks help the system store and deliver air faster.

Recommended tank sizes:

• 2.5 to 5 gallons for off-road use

• Larger tanks = fewer compressor cycles

Place the tank where it’s protected from debris but easy to drain, such as:

• Spare tire area

• Underbody enclosure

• Rear cargo compartment

Step-by-Step Installation Guide

1. Preparation

• Disconnect your vehicle battery

• Gather tools: sockets, drill, crimpers, wire strippers

• Wear safety gloves and glasses

• Review your vehicle’s service manual

2. Mount the Compressors

• Pick a cool, protected area

• Avoid locations close to exhaust or radiator heat

• Use the supplied bracket

• Add rubber pads to reduce vibration

• Keep air filters facing away from dirt and heat

3. Wiring the Electrical System

Basic Steps

• Run power cables from the battery to the compressor

• Use 10–12 AWG wire (high-current rated)

• Add a fuse or breaker near the battery

• Install the relay included in the ARB harness

• Ground the system to bare metal

• Apply dielectric grease to prevent corrosion

Important:

Never use undersized wire. It causes heat buildup and voltage drop.

4. Installing Air Lines

• Route lines away from heat and sharp edges

• Use grommets when passing through metal

• Tighten all fittings to prevent leaks

• Add a pressure relief valve

• Install a drain valve at the bottom of the tank

System Testing & Final Checks

1. Leak Test

• Pressurize the system

• Apply soapy water to fittings

• Look for bubbles (tighten if needed)

2. Performance Test

• Watch pressure build-up

• Confirm auto shut-off works

• Listen for strange noises or overheating

• Check that both compressors cycle properly

3. Break-In Period

• Avoid long, heavy use during the first few hours

• Recheck bolts, connections, and wires

• Drain tank after first few uses

Why Buy Your ARB Twin Compressor from Tuning4?

Tuning4 offers:

• Genuine ARB products

• Full manufacturer warranty

• Fast shipping

• Expert support for installation

• Complete onboard air kits and accessories

Whether you’re building your first air system or upgrading your off-road rig, Tuning4 has everything you need.

Conclusion

The ARB Twin Compressor is one of the best onboard air systems for off-road travel. Its twin-motor design delivers faster inflation, strong reliability, and the power needed for tools and air lockers.

With proper installation and maintenance, it will last for years and support you through any terrain.

For the best deals and expert support, explore ARB Twin Compressor kits at Tuning4, your trusted partner for off-road air systems.