Axle & Transmission Breather Vent Filter is used for letting differentials, axles and gearboxes exhale and inhale as they heat and cool, while a sintered element keeps water, mud and dust out. SAE J1858 assemblies is the reference cited for it on drawings, datasheets and purchase orders.
What SAE J1858 assemblies Means for Axle & Transmission Breather Vent Filter
The dimensions in the table below are supplied to suit SAE J1858 assemblies. Where the standard sets requirements for the finished appliance, device or system, compliance testing of that assembly stays with its manufacturer; we supply the metal mesh part to the drawing and can provide material certificates and dimensional reports with the shipment.
Axle & Transmission Breather Vent Filter Dimensions
| Size | Outer diameter (mm) | Length (mm) | Micron rating (u00b5m) | Thread |
|---|---|---|---|---|
| M10 u00d7 1 | 14 | 18 | 40 | M10 u00d7 1 |
| M14 u00d7 1.5 | 19 | 22 | 40 | M14 u00d7 1.5 |
| 1/8 NPT | 15 | 20 | 60 | 1/8-27 NPT |
Specifying Axle & Transmission Breather Vent Filter Beyond the Standard
- Thread: M10 × 1, M14 × 1.5 or 1/8 NPT — match the housing.
- Micron rating: 40–60 µm sintered stainless breathes freely while blocking grit.
- Location: Specify a remote hose kit where the housing can be submerged.
When Axle & Transmission Breather Vent Filter Is Not the Right Choice
Not a desiccant breather; humid-climate gearboxes needing dry air use a silica-gel breather instead.





