Skip to content
1100 250 021 (without gear), Twin Cylinder Compressor, Air Brake Compressors

3231 Views Updated

1100 250 021 Compatible Twin Cylinder Air Compressor

1100 250 021

Summary

This water-cooled twin cylinder compressor features a Ø85.00 bore, 56 mm stroke, and 636cm³ swept volume. Designed for heavy commercial vehicle air brake systems, it ensures reliable air pressure generation for Mercedes-Benz applications. Consult your authorized distributor. Equivalent to OE Mercedes-Benz 4571303615SP1 and WABCO 9125101000SP1.

Product identifiers
EAN Code8699031064840
Ready to Order
Get Information
Share
WhatsApp Facebook X LinkedIn

Compatible OEM Codes

  • MERCEDES BENZ
    • 457 130 70 15 SP1
    • 457 130 48 15 SP1
    • 457 130 36 15 SP1
  • WABCO
    • 912 510 103 0 SP1
    • 912 510 100 0 SP1

Description

What does a twin cylinder compressor do?

This twin cylinder compressor is an engine-driven component designed to provide high-volume compressed air for heavy commercial vehicle air brake systems. By utilizing two piston-cylinder assemblies, it delivers significantly higher air output than single-cylinder alternatives, making it ideal for vehicles with high air demand. It is constructed with heavy-duty grade materials to withstand rigorous operating conditions in the braking system.

Vehicle and engine compatibility

This specific unit is compatible with Mercedes-Benz trucks and is designed to meet the requirements of high-demand braking systems. It features a water-cooled design with a water inlet and outlet port size of M16x1,5, and includes an ESS feature for enhanced system reliability. This compressor is also suitable for various heavy commercial vehicle applications where consistent air pressure is critical.

Installation and maintenance guidance

Maintenance of this unit should focus on ensuring the water cooling circuit remains clear to prevent overheating. Technicians should inspect the M26x1,5 inlet and outlet ports regularly for any signs of leakage or debris buildup. Proper installation requires verifying that the through drive and unloader port (M12x1,5) align perfectly with the engine interface to ensure efficient operation.

Selection and replacement advice

When replacing a worn unit, it is vital to verify that all mounting dimensions and port locations match the original equipment specifications. This ensures seamless integration within the pneumatic system without requiring modifications to the existing lines or mounting brackets.

OE cross-reference

1100 250 021 (Twin Cylinder Compressor) is the equivalent of the Mercedes-Benz and WABCO OE numbers. This part directly replaces Mercedes-Benz OE numbers 4571303615SP1, 4571304815SP1, 4571307015SP1. It also replaces WABCO OE numbers 9125101000SP1, 9125101030SP1.

Technical Specifications

Technical Specifications
Cylinder BoreØ85.00
Stroke56 mm
Swept Volume636cm³
Air Inlet PortM26x1,5
Air Outlet PortM26x1,5
Number of Cylinders2
Through DriveOK
Air Unloader PortM12x1,5
Water (W) or Air (A) CooledW
Water Inlet PortM16x1,5
Water Outlet PortM16x1,5
With ESS FeatureOK
Water Cooled Valve PlateOK

Other OEMs

MERCEDES BENZ

  • A4571307015SP1
  • A4571307015 SP1
  • A4571304815SP1
  • A4571304815 SP1
  • A4571303615SP1
  • A4571303615 SP1
  • 4571307015 SP1
  • 4571304815 SP1
  • 4571303615 SP1
  • 457.130.7015 SP1
  • 457.130.70.15 SP1
  • 457.130.4815 SP1
  • 457.130.48.15 SP1
  • 457.130.3615 SP1
  • 457.130.36.15 SP1
  • 457 130 7015 SP1
  • 457 130 4815 SP1
  • 457 130 3615 SP1
  • 457 130 70 15 SP1
  • 457 130 48 15 SP1
  • 457 130 36 15 SP1

WABCO

  • 9125101030SP1
  • 9125101030 SP1
  • 9125101000SP1
  • 9125101000 SP1
  • 912.510.103.0 SP1
  • 912.510.100.0 SP1
  • 912 510 103 0 SP1
  • 912 510 100 0 SP1

Related Products

Repair Kits

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
MERCEDES BENZ
WABCO

FAQ

What is the function of a twin cylinder compressor?
It is an engine-driven unit that uses two piston assemblies to generate high volumes of compressed air to fill brake reservoirs quickly.
Can this compressor be used in Mercedes-Benz vehicles?
Yes, this unit is specifically designed to be compatible with Mercedes-Benz heavy commercial vehicle applications.
What are the key technical specifications of this unit?
The unit features a Ø85.00 bore, 56 mm stroke, 636cm³ swept volume, and utilizes a water-cooled design with M16x1,5 ports.
How do I know if my compressor needs replacement?
Technicians should look for symptoms such as slow air pressure buildup in the reservoirs or visible leaks from the inlet/outlet ports.
What are the OE reference numbers of this part?
1100 250 021 directly replaces Mercedes-Benz OE numbers 4571303615SP1, 4571304815SP1, 4571307015SP1. It also replaces WABCO OE numbers 9125101000SP1, 9125101030SP1.