Master Cylinder Assembly – Disc Brake – 4-127-22 (Includes 32291U & 054-140-22)
This 4-127-22 Master Cylinder Assembly is a complete OEM replacement for many Dexter and Titan / Dico hydraulic disc brake actuators. It includes the master cylinder body (32291U) and the push-rod piston / return spring kit (054-140-22), factory-assembled and ready to install. Engineered for smooth, consistent hydraulic pressure and long-term corrosion resistance.
| Part Number | 4-127-22 |
| Includes | (1) 32291U Master Cylinder Body (1) 054-140-22 Piston & Return Kit |
| Brake Type | Disc Brake (Hydraulic) |
| Fluid Port Size | 3/16" inverted flare, 3/8-24 thread |
| Material | Aluminum housing with plated steel piston and spring assembly |
| Common Applications | Dexter DX series, Titan / Dico Model 20 Disc, Aero 7500 Disc, and similar surge brake actuators |
| Country of Manufacture | USA |
Features
- Direct OEM replacement – no modification required
- For use with hydraulic disc brake actuators only
- Precision-machined bore for consistent brake pressure
- Factory-assembled with piston and spring kit installed
- Compatible with DOT 3 and DOT 4 brake fluid
Includes: One (1) complete 4-127-22 master cylinder assembly. If rebuilding an existing actuator, inspect reservoir and gasket before reuse. This part replaces older Dico / Titan references and fits many Dexter hydraulic disc models.
See All Our Hydraulic Brake PartsShipping
We ship quickly and carefully, with tracking provided on every order. Most items ship the same or next business day. Your parts will arrive safely and on time, ready to use.
Returns & Guarantee
Your satisfaction is guaranteed. Returns, refunds, and exchanges are accepted — no hassle. We stand behind every part we sell, so you can purchase with confidence.
Committed to Customer Service
At R and P Carriages, we believe in treating our customers like family. Whether you need a small replacement part or a complete trailer service, we’re here to help with friendly, expert support every step of the way.