MASTER CYLINDER 2239045 INTERNATIONAL FORD KENWORTH PETERBILT

Reservoir for hydraulic system component.

NEW Brake Master Cylinder (2-inch Bore) – Replaces 2239045 | Kenworth T370, Peterbilt 337

Name: NEW Brake Master Cylinder (2-inch Bore) – Replaces 2239045 | Kenworth T370, Peterbilt 337
Brand: abc dynamics
SKU: 10804276-5
Availability: InStock

$205.00

SKU: 10804276-5 Categories: Master Cylinders for Hydromax, VIEW ALL PRODUCTS Brand: abc dynamics

NEW Brake Master Cylinder (**2-inch Bore**) – Replaces 2239045 / Kenworth Peterbilt Paccar

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 **Kenworth, Peterbilt, and Hino medium-duty commercial trucks**. 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 the demanding hydraulic systems of premium medium-duty vocational and delivery trucks.

Verified Casting & Cross-Reference Numbers

This master cylinder is a confirmed replacement for the casting number **2239045** and cross-references with the following PACCAR OE number:

**Primary Casting:** 2239045
**PACCAR OE Cross-Ref:** 0204839670

Fits the following models:

**Kenworth:** T170, T270, T300, T370 (All listed years/variants)
**Peterbilt:** 325, 330, 335, 337 (All listed years)

Expert Installation & Technical Support

Safety Tip: Braking components are safety-critical. Always bench bleed the master cylinder before installation.

Brake master cylinder reservoir material and height **may vary**, but the core fit and hydraulic function remain the same.
**IMPORTANT:** Adaptors on the outlet ports **may be needed** to fit your specific vehicle’s existing brake lines, as the same casting number was used on several different assemblies.

For detailed, step-by-step instructions, please consult our official **Master Cylinder Replacement Guide:**

Access the Master Cylinder Replacement Guide Here

For systems using a Hydro-Max Booster, access the **Hydro-Max Brake System Technical Manual** here:

Download Technical Manual (PDF)

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