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

Verified Casting Numbers

• 2239045

⚠ CRITICAL: Verify Specifications

To ensure safety in high-cycle delivery environments, verify that this 2-inch bore size matches your existing unit exactly. Brake master cylinder reservoir material and height may vary, but the core fit and hydraulic function remain identical. IMPORTANT: Adaptors on the outlet ports may be needed to fit your specific vehicle’s brake lines, as this casting was utilized across multiple step van and commercial chassis configurations.

Expert Installation & Field Note

Drawing on our shop experience specializing in heavy-duty brakes since 1985, we emphasize that pushrod alignment is vital for MT-Series and F59 step van chassis. These vehicles face an extreme start-stop duty cycle; even a slight misalignment in a 2-inch bore system can lead to premature seal wear and pedal fade. Always bench bleed the master cylinder before installation. For Morgan Olson or Utilimaster bodies, ensure your reservoir clearance is sufficient for the specific height of this unit.