NEW Brake Master Cylinder (2-inch Bore) – Replaces 2239045 | FedEx UPS Freightliner MT45 F59 Step Van

ABC Dynamics: Precision Parts for Uncompromising Performance.

Ensure reliable, heavy-duty braking control for your **Commercial Package Delivery Fleet (FedEx Ground, UPS, Amazon)** with this brand new **Brake Master Cylinder** from **ABC Dynamics**. Engineered with a powerful **2-inch bore size**, this master cylinder is a direct replacement for critical braking systems found across the popular **Freightliner MT-Series and Ford F59 step van chassis**. Trust in quality that meets or exceeds OEM specifications for casting number **2239045**.

Key Specifications & Expert Features

• Condition: **NEW** Brake Master Cylinder (Non-Remanufactured) for maximum safety and lifespan.
• Bore Size: **2-inch bore size** (Critical for generating high hydraulic pressure in heavy-duty applications).
• Outlet Ports: Features both **1/2″-20** and **9/16″-18** outlet size threads.
• Included Switches: **DIFFERENTIAL PRESSURE SWITCH** and **FLUID LEVEL INDICATOR SWITCH** are **INCLUDED**.
• **Application Balance:** Specifically engineered for the demanding start-stop duty cycle of **Walk-in Delivery Vans** and parcel box trucks.

Verified Casting & Critical Notes

This master cylinder is a confirmed replacement for the casting number **2239045** and fits the following common delivery chassis and body builders:

• **Freightliner:** MT35, MT45, MT55, P1000, P1200 Step Van Chassis
• **Ford:** F59 Commercial Stripped Chassis (Used by Morgan Olson/Utilimaster)
• **Former GM/Workhorse:** P-Series Chassis (Older UPS/Delivery Models)
• **Primary Casting:** 2239045

Expert Installation & Technical Support

ABC Dynamics Part Number / SKU: **10804276**