Axle Vents
The latest evolution in axle venting has arrived. Introducing the redesigned and refined Vented Dipstick Series and ALL NEW Axle Vent Plugs from Otis Innovation.
Same great quality featuring a new compact configuration for a wider variety of tractors.
Proudly designed and machined in the USA
Our new axle vents feature a high-performance ePTFE membrane that provides exceptional breathability, allowing pressure equalization while preventing the ingress of water, oil, dust, and contaminants. With no moving parts, the design is both simple and robust—minimizing failure points and reducing costly repairs. This streamlined, low-profile solution offers reliable protection in demanding environments, making it ideal for tractor applications where durability and dependability matter most.
Includes:
6061 Machined Billet Aluminum Body
Oleophobic ePTFE Vent Module*
Replacement O-Ring
Otis Decal
* IP69K- protects against water ingress in submerged environments for up to 60 minutes and high-pressure spray.
Why vent?
The video shown here depicts an example of a pressurized front axle. If you have experienced this with your tractor, there is a differential from ambient pressure within the axle housing. This pressure is being exerted on every internal component of the axle housing, including all seals. The axle vent system protects the seals from pressure-related leaking and failure by allowing the housing to vent freely and equalize with ambient conditions.
The part shown here is an OEM-termed "breather". It is factory installed on various late model tractors and OEM replacement "vented" dipsticks. This is not a vent. It is a pressure relief valve (PRV) that allows air to exhaust from the axle housing upon exceeding the pressure exerted on the valve disc by the spring. The valve will only permit relief flow in one direction and does not allow for bi-directional venting or equalization of the axle housing to ambient pressure.
