This separator is an aftermarket replacement separator designed for use in Busch R5/RA/RC and GEV GP/M series vacuum pumps. With a total height of 140 mm, outer diameter of 72 mm, and largest inner diameter of 35 mm, this separator offers a direct fit for models such as Busch KB 0040 D, R5 0025 D, and GEV 11 GP/M. Weighing 0.39 kg, it serves as a cost-effective alternative without compromising on build quality.
Technical properties & cross references
Specifications
| Body Height |
132 mm (5 3/16") |
| Height-1 |
8 mm (5/16") |
| Total Height |
140 mm (5 1/2") |
| Product Net Weight |
0.39 kg (0.86 lbs) |
| Largest Inner Diameter |
35 mm (1 3/8") |
| Outer Diameter |
72 mm (2 27/32") |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| Oxfil |
USD 35.87 |
16 Oct 2026 |
| FilterFinder Online |
USD 49.00 |
14 Oct 2026 |
| Spare Part Mart |
USD 28.70 |
Today |
Our price of USD 28.70 is 20% to 41% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
Continuous industrial vacuum operation
In environments where Busch R5 series pumps run continuously, this separator ensures efficient oil separation, reducing oil carryover and maintaining pump performance over extended shifts.
High dust or particulate environments
For GEV GP/M pumps used in dusty workshops or processing plants, this separator captures fine particles, protecting downstream components and extending service intervals.
Multi-pump maintenance scheduling
Facilities operating both Busch and GEV pumps can standardise on this separator, simplifying inventory management and reducing the risk of fitting the wrong part during scheduled maintenance.
Cost-sensitive replacement cycles
When OEM separator costs are prohibitive, this aftermarket alternative provides a reliable drop-in solution for Busch KC 0040 D or GEV 21 GP/M pumps, helping to control operating expenses.
Frequently asked questions
Will this separator fit my Busch R5 0040 D pump?
Yes, this separator is a direct replacement for the separator in Busch R5 0040 D, as well as other models like KB 0040 D and KC 0025 D. Check your pump's specifications for compatibility.
What is the filtration rating of this separator?
This separator is a coalescing separator designed to remove oil mist from the exhaust air. Its exact micron rating is not specified, but it is built to the original dimensions and ratings for the listed Busch and GEV pumps.
What are the exact dimensions and thread type?
The separator has an outer diameter of 72 mm, a total height of 140 mm, and a largest inner diameter of 35 mm. It uses a standard thread fitting compatible with the original equipment.
Is this part genuine Busch or an aftermarket alternative?
This is an aftermarket replacement, not a genuine Busch part. It is manufactured to match the original specifications and serves as a direct replacement for the OEM separator.
How do I install this separator?
Installation is straightforward: remove the old separator, clean the mounting area, and screw the new separator into place. Ensure the O-ring seals properly to prevent leaks.