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Dorman 924-5811 Air Brake ReservoirOE Quality 60-Day Returns
Part #: 924-5811

Dorman 924-5811 Air Brake Reservoir

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Dorman 924-5811 Air Brake Reservoir

Dorman 924-5811 is a direct-style air brake reservoir for air-actuated braking and suspension systems. It replaces a corroded or leaking tank with an OE-shaped reservoir that uses the same port configuration for service on heavy-duty truck and commercial vehicle applications.

  • Carbon steel construction with black finish
  • 30 L volume with two-chamber tank design
  • 8.5 in. diameter and 33 in. length
  • Maximum working pressure: 150 PSI
  • Strap-on mounting style
  • 10 ports with M22 and 1/4 in. thread sizes
  • Replacement air tank for brake and suspension air systems

OE-Style Replacement Details

This air brake reservoir is built to match the original tank layout, including port placement and thread configuration, so it can be selected for service work where the existing reservoir has rust, leakage, or pressure loss. The Dorman 924-5811 is a practical replacement for commercial vehicles that rely on stable air supply for braking performance and suspension operation. This part cross-references 3829915C1 for the same application.

What It Helps Fix

  • Air loss caused by tank corrosion or pinholes
  • Reduced brake system pressure from a leaking reservoir
  • Suspension air supply issues tied to a damaged tank
  • Service downtime from a cracked or deteriorated air chamber
  • Fitment problems when replacing an OE-style reservoir with the same port layout

Installation Notes

Verify tank diameter, length, port count, thread sizes, and mounting style before installation. This reservoir uses strap-on mounting and does not include mounting hardware, valves, or threaded mounting brackets. Confirm the vehicle’s air system configuration and port requirements before replacing the original tank on compatible truck or commercial vehicle applications.

Quality Assurance

Dorman manufactures replacement components to match original equipment dimensions and service requirements. This reservoir is intended as a direct-style service part for air brake and suspension systems where the original tank has failed due to corrosion or leakage.

BrandDorman
Part Number924-5811
MaterialCarbon steel
Diameter8.5
Length33
ColorBlack
Mounting Hardware IncludedNo
Material Thickness0.13
Mounting Hole Quantity0
Maximum Working Pressure150 psi
Mounting TypeStrap on
Package Contents1 air tank
Port Quantity10
Port Thread DiameterM22; m22; m22; m22; m22; m22; m22; m22; 1/4 in; 1/4 in
Port Thread Pitch1.5 mm; 1.5 mm; 1.5 mm; 1.5 mm; 1.5 mm; 1.5 mm; 1.5 mm; 1.5 mm
Port Threads Per InchNpt; npt
Tank Chamber Quantity2
Threaded Mounting Bracket IncludedNo
Valve IncludedNo
Volume30 l

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

3829915C1

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.