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MASTER CYLINDER 2239045 INTERNATIONAL FORD KENWORTH PETERBILT
Reservoir for hydraulic system component.
Brake master cylinder with reservoir.
MASTER CYLINDER 2239045 INTERNATIONAL FORD KENWORTH PETERBILT
Reservoir for hydraulic system component.
Brake master cylinder with reservoir.
abc dynamics

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

$205.00

SKU: 10804276-5 Categories: , Brand:

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**

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Quality Brake and Clutch Components from ABC Dynamics

Weight 12 lbs
Dimensions 11 × 8 × 7 in

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