Hulk 4x4 Diff Breather Kit - 4 Port

Hulk 4x4 Diff Breather Kit - 4 Port -  Kit is "semi-universal" and will suit any vehicle that takes the listed fittings

Protect Your Drivetrain Against Water Ingress

The HULK 4X4 Diff Breather Kit is a premium multi-component 4-port system designed to safeguard your 4WD’s drivetrain from water and dust ingress. Ideal for harsh off-road conditions, this kit extends breather points for critical components, giving you the confidence to take on deep crossings and challenging terrain.

The HULK 4X4 Breather System is built tough for Australian conditions. By relocating breather outlets, it prevents water, mud, and contaminants from entering vital drivetrain components, extending the life of your 4WD and giving you peace of mind when tackling water crossings.

Features & Benefits:

Multi-component 4-port kit – service multiple components from one unit.
Provides protection for Diffs, Gearbox, Transfer Case, and Winch.
Simple installation – designed for a wide variety of 4WD applications.
Fitted with sintered filters for added dust and moisture protection.
Durable fittings and hardware to ensure long-lasting performance.

Kit Contents:

•Diff breather block
•Sintered filters
•1/4" PU fittings (straight)
•1/4" PU fittings (90°)
•Tech screws
•1/4" PU Y fitting
•1/4" BSP to M8 barb

Note: Not suitable for metric applications.
Note: Not suitable for the following vehicles:

Ford PJ/PK Ranger (2006–2011)
Mazda UN BT-50 (2006–2011)

A differential / gearbox breather acts as snorkel for your driveline components.  It ensures they don't fill with water and debris when off-roading.

When your vehicle is running at normal operating temperatures and your driveline components suddenly come into contact with water or mud, that change in temperature creates a vacuum inside your hot differential / gearbox. 

This pressure shift allows mud and water to enter your driveline components through the factory breathers or seals.

Correctly fitting a good quality breather kit to your vehicle will save your driveline components from premature failure, resulting in thousands of dollars of repair bills in some vehicles.


Freight / Collection: All items are sent via GSS freight.

Refund / Exchange Policy: Please read the item description carefully before purchasing, as we do not provide refunds if you bought the wrong item or simply changed your mind.  If the items are faulty, we will meet our obligations under the Consumer Guarantees Act to provide a remedy.