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Boss 4 Way Driveline Diff Breather for Toyota Hilux N70 KUN26 FWD-DB-HKB4WB-9


Boss Air Suspension

Most orders are dispatched within 24 hours!
Product Code: FWD-DB-HKB4WB-9

Boss Toyota Hilux N70 KUN26 4 Way Driveline Diff Breather FWD-DB-HKB4WB-9


As a recreational off roader there is bound to be tracks you come across with stream or river crossings and even more common mud or bog holes. For these occasions we fit snorkels to our vehicles to allow our engines to still get clean air even in the deepest holes or crossings.
Many people forget that there differentials, gearboxes and transfer cases all have breathers as well and can be as low as the centre of your wheels which get easily submerged in the shallowest of holes or a partially flooded road let alone a river crossing.
HKB Performance full driveline and diff breather kits are a cost effective way to safe guard and also reduce the service costs to the expensive driveline components of your pride and joy.
One of the most extreme times for your four wheel drives driveline is when off road or crossing water. Your driveline being at operating temperature when suddenly dropped in a mud or water hole the driveline housings get cooled rapidly which can cause a suction of air through the breather, at this point it is submerged in either mud or water which inturn gets sucked into the housings and mixed with the oil lubricating these parts.
HKB remote driveline breather kits are designed to extend the breathing point of your differentials, transfer case and gearbox to an area where water shall not reach such as the highest point in the engine bay, cabin or even inside your snorkel.

This kit will extend both differentials, transfer case and gearbox.

This kit contains:

  • One heavy duty stainless steel fixture
  • Four high flow breathers
  • Four female chrome plated push fittings
  • Four flex tube adaptor
  • Twelve metres tubing
  • Twelve cable ties
  • Two Stainless Steel screws

Fast Dispatch

Once payment has cleared we will post your item as soon as possible. However, If the item is purchased after 2pm, it will be shipped the next day.

Combined Shipping

We combine shipping for orders with multiple items to save our customers money on postage.


Most orders will be sent with a tracking number, to confirm if your item has tracking please contact us.

Please note:

Additional postage charges may apply for regional or remote areas, please contact us if you are unsure about your area.

All efforts will be made to send out orders as soon as possible so you receive your item on time. However please be aware that once an item is sent from our warehouse it is out of our control.

If you would like registered post with signature on delivery and insurance please contact us before purchasing the item.

As per Australia Post policy, all EXPRESS postage automatically have ATL (Authority to leave) which means if you’re not home at the time of delivery it will be left on the premise in a location deemed safe by Australia Post. More information about ATL can be found here

Local Pickup: Please allow up to 2 business days for local pickups

Please ensure your contact number is included and correct. Failure to do so could result in delayed shipping and/or extra delivery charges in the event of a missed delivery.

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