Product Description
The PSC VB01 AXLE/DIFFERENTIAL BREATHER VENT is a simple, high-value upgrade for axle housings, differential housings, transmissions, and transfer cases that need to vent pressure without losing fluid or allowing dirt and contaminants into the system. Designed to fit over any 1/4 inch tubing or low-pressure barb fitting, the PSC VB01 vent bellow expands and contracts with temperature and pressure changes to help protect critical driveline components in off-road, towing, trail, and heavy-duty use. This is an excellent fit for custom builds, rock crawlers, off-road trucks, Jeeps, and fabricated driveline vent setups where durability and contamination control matter.
Fitment
- Universal fit for axle housings, differential housings, transmission cases, and transfer cases using 1/4 inch tubing or a low-pressure barb fitting
- Ideal for off-road trucks, Jeeps, crawlers, and custom driveline vent systems
- Fits front and rear axle housing vent applications where a compact vent bellow is preferred
- Not for use with power steering fluid reservoirs due to the greater expansion requirements created by heat in steering systems
Specifications for PSC VB01
| Specification | Details |
|---|---|
| Brand | PSC Steering Components |
| Part Number | VB01 |
| Product Type | Axle/Differential Breather Vent Bellow |
| Tubing/Fitting Size | Fits 1/4 inch tubing or low-pressure barb fitting |
| UPC | 687927185128 |
| GTIN | 687927185128 |
| Shipping Info | Calculated at checkout |
| Prop 65 | Yes - Cancer and Reproductive Harm. See www.P65Warnings.ca.gov |
FAQ
What does the PSC VB01 breather vent do?
The VB01 allows driveline housings and cases to vent pressure changes without pushing fluid out or pulling dirt and contaminants into the system.
Where can the PSC VB01 be used?
It is commonly used on axle housings, differential housings, transfer cases, and transmission cases that use 1/4 inch tubing or a low-pressure barb fitting.
Is the PSC VB01 vehicle specific?
No. This is a universal driveline breather solution used in many off-road, custom, and heavy-duty applications.
Can I use the PSC VB01 on a power steering reservoir?
No. PSC specifically warns against using this vent bellow on power steering reservoirs because the heat in steering systems can require more expansion than this bellows design allows.
Why is a breather vent upgrade important?
A quality breather helps reduce contamination risk, protects seals, and manages pressure changes that happen as drivetrain components heat up and cool down during use.
