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MAZDA BT-50 / Bounty Diff Breather Extension Kit
$89.00 per item

This listing closed and did not sell. The item has been relisted.

Closes: Wed 6 Jul, 05:05 pm | Location icon Seller located in Christchurch City, Canterbury ·11 views

MAZDA BT-50 / Bounty Diff Breather Extension Kit

Asking price


Flatout Offroad

This kit is to extend and relocate the factory breathers to the engine bay. It will suit Mazda Bounty and BT-50 utes.

This kit contains:

2 Port Kit - Extends both front and rear diff breathers.

  • 2x Custom CNC fittings to suit Mazda Bounty and BT-50
  • 1x Splash proof mounting Bracket / Breather housing
  • 3x Self tapping screws
  • 2x Filters/ Breathers
  • 2x Hose connects
  • 15 x Zip Ties
  • 6m Of 10mm Hose (Enough to do most trucks) )
  • Fitting advice is included with these kits

We use 10mm OD hose in our kits for a reason - For other kits that use 6mm OD hose to cut costs. The inside diameter IS NOT LARGE ENOUGH to be effective for this purpose.

Install time is around 1 - 4 hours, Can be installed with basic hand tools. Very simple and beneficial upgrade.

Please note: To install some kits you may need to drill and tap a thread for the fittings.

Why do you need this mod?

Extending your factory diff breathers is a essential modification if you plan on doing any sort of water crossing in your 4wd. Factory breathers are located on top of the axle housing, this kit is to re-locate them to the fire wall.

Operating your 4wd causes the drive train to heat up - and the air inside it to expand. When entering a river, the cold water rapidly cools the diff and the hot air inside it creates a vacuum as it tries to equalize the pressure. If your diff breather is submerged when this happens - water, grit and mud can potentially get sucked inside your diff housing.

Extending the factory breathers to a higher position in the 4wd keeps them "high and dry" or if you are crossing extremely deep water it will keep them clear until this process has been completed.

The breather housing in this kit is designed to act as a shield stopping mud, dust and water from splashing up. It is easily removable when cleaning is required.

100% Kiwi owned and operated, thanks for the support!

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Asking price

Shipping & pick-up options

Destination & description Price
NZ Wide Courier 1-4 Working Days $9.20
NZ Wide Rural Delivery 2-4 Working Days $12.50
Shipping more than one item No extra charge

Seller does not allow pick-ups

Payment options

Seller accepts
Ping, Cash, NZ Bank Deposit


99.4% positive feedback
address verified in trade
Christchurch City
Member since
Thursday, 16 July 2015
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