NEW Brake Master Cylinder (2-inch Bore) – Replaces 2239045 | International 4000 Series & School Bus 3000 Series

ABC Dynamics: Precision Parts for Uncompromising Performance.

Ensure reliable, heavy-duty braking control 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 in **International trucks, buses, and commercial transport**. 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:** Engineered for Navistar **International 3000 Series Buses** and **4000 Series** medium-duty trucks.

Verified Casting & Cross-Reference Numbers

This master cylinder is a confirmed replacement for the casting number **2239045** and cross-references with the following Navistar/International and Bendix part numbers:

• **Primary Casting:** 2239045
• **Navistar/International Cross-Refs:** 1691291C92, 2517902C91, 5011314R91
• **Bendix Cross-Ref:** BX012379

Fits the following International truck and bus models:

• 3000, 3200, 3300, 3400, 3600, 3700, 3800 Bus Series (All Variants)
• 4100, 4200, 4300, 4400, 4600, 4700, 4800, 4900 Series Trucks (All LP/LPX Variants)
• CXT, Durastar 4100, 4300, 4400 Series, 7100 Series
• 1652SC, 1652UPS, M1400/M1600 Metro II, Genesis RE

Expert Installation & Technical Support

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