Product Description
Kit Major G11 0400 0400B for Busch 0400B - BMK021 - OEM Equivalent
Repair Kit for Busch - OEM Equivalent
OEM-equivalent replacement, not manufactured by Busch, supplied by Vacuum Pump Supply.
Compatible Pump Models
- 0400B
When Should You Rebuild or Service the Pump?
- Reduced vacuum performance
- Slow pump-down times
- Oil leaks or worn sealing components
- Excessive exhaust smoke or oil mist
- Worn or damaged internal components
- Scheduled preventative maintenance interval reached
Complete Busch Vacuum Pump Solutions
Vacuum Pump Supply stocks OEM-equivalent Busch repair kits, filters, vanes, gaskets, seals, bearings, and service parts for pump maintenance and rebuild work.
Busch Parts & Resources
Recommended Service Products
Why Buy from Vacuum Pump Supply?
- Vacuum pump specialists since 2006
- Over 15,000 vacuum pump parts and kits available
- OEM-equivalent replacement parts for hard-to-find vacuum pump models
- Fast shipping on stocked products
- Technical support from vacuum pump specialists
- Trusted by manufacturers, laboratories, universities, service companies, and maintenance teams
Frequently Asked Questions
Is this an OEM Busch product?
No. This is an OEM-equivalent product supplied by Vacuum Pump Supply.
What is the part number?
The part number is BMK021.
Can Vacuum Pump Supply help identify the correct part?
Yes. If you are unsure whether this is the correct product for your pump, contact Vacuum Pump Supply with your pump model and any existing part numbers.
Kit Includes
Vanes
- Busch Vane, 1st Stage - GX Part# 72245400 — Qty 3
Gaskets
- Busch Side Cover Plate Gasket Part# 48013400 — Qty 1
- Busch Oil Sight Glass Gasket Part# 48023100 — Qty 1
- Busch Ring Gasket, Copper Part# 48402900 — Qty 1
- Busch Float Valve Gasket Part# 481529712 — Qty 1
- Busch Exhaust Box Cover Gasket Part# 48013100 — Qty 1
- Busch Float Valve Cover Gasket Part# 481532126 — Qty 1
- Busch Gasket Part# 48012800 — Qty 1
- Busch Cylinder/Exhaust Box Gasket Part# 48011100 — Qty 1
- Busch Ring Gasket Part# 48406200 — Qty 1
- ring Gasket, Busch, R5, 0160B, 0250B, 0160D, Part# 48404000 — Qty 2
- Busch Oil Fill Plug Gasket Part# 48210600 — Qty 1
- Busch Oil Cooler Gasket Part# 480537332 — Qty 2
- Busch Ring Gasket Part# 48403400 — Qty 2
O-Rings & Seals
- O-ring, 97 x 5 mm - Viton, Part# 48661100 — Qty 1
- O-ring, 140 x 5 mm - Viton, Part# 48656700 — Qty 2
- Busch O-Ring,Viton,266.3 x 3.53mm Part# 486903988 — Qty 2
- O-ring, 28 x 3 mm - Viton, Part# 79509 — Qty 1
- Busch Shaft Seal, Viton Part# 48703200 — Qty 4
- O-ring, FKM - Part# 48650500 — Qty 1
- O-Ring,FKM — Qty 4
- Busch O-Ring,Viton,35 X 4 MM Part# 48651200 — Qty 8
- O-Ring, FKM - Part# 48654900 — Qty 2
- Busch O-Ring,Viton,25 X 2 MM Part# 48656100 — Qty 2
- Busch O-Ring,Silicone,420MM LONG Part# 48206600-420MM — Qty 1
- O-ring, 8 x 2 mm - Viton, Part# PL23970149 — Qty 2
Filters & Bearings
- Busch Bearing Sleeve Part# 47201000 — Qty 2
- Busch Bearing, Sleeve (Race) Part# 47201100 — Qty 2
- Busch Needle Bearing - No Sleeve (Race) Part# 47300900 — Qty 2
Drive & Mechanical
- Busch Taper Pin, Threaded Part# 43708000 — Qty 4
- Busch Hex Nut, M8 Part# 42000700 — Qty 2
- Busch R5 Inlet Ball Valve, Viton - Part# 73001800 — Qty 1
- Oil Drain Plug, 1/2" Nylon — Qty 1
- Busch Sight Glass Part# 83623 — Qty 1
- Sight Glass Assembly — Qty 1
Complete Bill of Materials
| Part Number | Description | Qty |
|---|---|---|
| 48013400 | Busch Side Cover Plate Gasket Part# 48013400 | 1 |
| 48661100 | O-ring, 97 x 5 mm - Viton, Part# 48661100 | 1 |
| 47201000 | Busch Bearing Sleeve Part# 47201000 | 2 |
| 48023100 | Busch Oil Sight Glass Gasket Part# 48023100 | 1 |
| 48656700 | O-ring, 140 x 5 mm - Viton, Part# 48656700 | 2 |
| 43708000 | Busch Taper Pin, Threaded Part# 43708000 | 4 |
| 42000700 | Busch Hex Nut, M8 Part# 42000700 | 2 |
| 486903988 | Busch O-Ring,Viton,266.3 x 3.53mm Part# 486903988 | 2 |
| 79509 | O-ring, 28 x 3 mm - Viton, Part# 79509 | 1 |
| 73001800 | Busch R5 Inlet Ball Valve, Viton - Part# 73001800 | 1 |
| 72245400 | Busch Vane, 1st Stage - GX Part# 72245400 | 3 |
| 710000010 | Oil Drain Plug, 1/2" Nylon | 1 |
| 48703200 | Busch Shaft Seal, Viton Part# 48703200 | 4 |
| 83623 | Busch Sight Glass Part# 83623 | 1 |
| 48402900 | Busch Ring Gasket, Copper Part# 48402900 | 1 |
| 481529712 | Busch Float Valve Gasket Part# 481529712 | 1 |
| 48013100 | Busch Exhaust Box Cover Gasket Part# 48013100 | 1 |
| 481532126 | Busch Float Valve Cover Gasket Part# 481532126 | 1 |
| 48012800 | Busch Gasket Part# 48012800 | 1 |
| 47201100 | Busch Bearing, Sleeve (Race) Part# 47201100 | 2 |
| 47300900 | Busch Needle Bearing - No Sleeve (Race) Part# 47300900 | 2 |
| 48011100 | Busch Cylinder/Exhaust Box Gasket Part# 48011100 | 1 |
| 48406200 | Busch Ring Gasket Part# 48406200 | 1 |
| 48404000 | ring Gasket, Busch, R5, 0160B, 0250B, 0160D, Part# 48404000 | 2 |
| 48210600 | Busch Oil Fill Plug Gasket Part# 48210600 | 1 |
| 480537332 | Busch Oil Cooler Gasket Part# 480537332 | 2 |
| 48650500 | O-ring, FKM - Part# 48650500 | 1 |
| 48652100 | O-Ring,FKM | 4 |
| 48651200 | Busch O-Ring,Viton,35 X 4 MM Part# 48651200 | 8 |
| 48654900 | O-Ring, FKM - Part# 48654900 | 2 |
| 48656100 | Busch O-Ring,Viton,25 X 2 MM Part# 48656100 | 2 |
| 48206600-420MM | Busch O-Ring,Silicone,420MM LONG Part# 48206600-420MM | 1 |
| 48403400 | Busch Ring Gasket Part# 48403400 | 2 |
| PL23970149 | O-ring, 8 x 2 mm - Viton, Part# PL23970149 | 2 |
| 500015PP | Sight Glass Assembly | 1 |
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