
Product Introduction
The T24 DD brake servo is a heavy-duty double diaphragm air brake chamber assembly used in commercial truck and trailer braking systems. “T24” refers to the standard service brake chamber size (Type 24), while “DD” indicates a double diaphragm configuration, typically used to provide enhanced braking force and more stable response in heavy-duty applications.
In operation, compressed air enters the service chamber and pushes the diaphragm to generate mechanical force through the push rod, which activates the brake mechanism. Compared with standard single-chamber designs, the DD structure provides improved braking stability, stronger force output, and more consistent performance under heavy-load and high-pressure conditions.
This type of brake servo is commonly used on heavy-duty trucks, trailers, and axle braking systems where higher safety performance is required, especially in long-distance transport, mining operations, and construction environments.
The unit is manufactured using high-strength stamped steel housing, reinforced rubber diaphragm material, and precision sealing technology to ensure airtight performance, corrosion resistance, and long service life. Each product is tested for air leakage, stroke performance, fatigue resistance, and pressure durability before shipment.

Technical Specifications
| Item | Specification |
| Product Name | Brake Servo / Brake Chamber |
| Model | T24 DD |
| Type | Double Diaphragm Air Brake Chamber |
| Application | Truck & Trailer Brake System |
| Function | Service Brake Force Amplification |
| Operating Medium | Compressed Air |
| Material | Steel Housing + Reinforced Rubber Diaphragm |
| Structure | T24 Double Diaphragm (DD) Type |
| Condition | New |
| OEM Standard | Yes |
| Quality Test | Air Tightness, Stroke & Durability Tested |
| Origin | China |
| Packaging | Export Standard Carton / Wooden Box |
Vehicle Fitment
| Vehicle Type | Compatible Models |
| Heavy Duty Trucks | HOWO / SHACMAN / FAW / DONGFENG |
| European Trucks | MAN / VOLVO / SCANIA / DAF (depending on configuration) |
| Trailers | Semi-trailer air brake systems |
| Construction Vehicles | Dump trucks & mining trucks |
Payment & Shipping
| Category | Options |
| Payment Methods | T/T, PayPal, Western Union, MoneyGram, Visa, MasterCard, L/C, Alibaba Trade Assurance |
| Shipping Methods | DHL, FedEx, UPS, TNT |
| Delivery Time | 3–7 Days (Express), 20–45 Days (Sea Freight) |
| Trade Terms | EXW, FOB, CFR, CIF, DDP |
| Shipping Scope | Worldwide Shipping Available |
Related Products Categories
| Section/System | Common Spare Parts |
| Cylinder Block & Cylinder Head | Cylinder Block, Cylinder Head, Cylinder Liner, Piston, Piston Ring, Cylinder Head Gasket |
| Crankshaft System | Crankshaft, Connecting Rod, Main Bearing, Connecting Rod Bearing, Thrust Washer |
| Valve Train | Intake Valve, Exhaust Valve, Camshaft, Rocker Arm, Valve Spring |
| Turbocharger System | Turbocharger, Turbo Repair Kit, Intercooler, Intake Pipe |
| Fuel System | Fuel Injector, Injector Nozzle, Fuel Pump, Fuel Filter |
| Cooling System | Water Pump, Thermostat, Radiator, Expansion Tank |
| Lubrication System | Oil Pump, Oil Filter, Oil Cooler, Oil Pan |
| Intake & Exhaust System | Air Filter, Air Cleaner Assembly, Exhaust Pipe, Muffler, DPF, SCR |
| Engine Electrical Parts | Starter Motor, Alternator, Sensors, Wiring Harness |
| Section/System | Common Spare Parts |
| Front Axle | Kingpin Kit, Steering Knuckle, Tie Rod, Wheel Bearing |
| Rear Axle | Axle Housing, Half Shaft, Differential Housing, Hub Bearing |
| Suspension System | Leaf Spring, Shock Absorber, Air Spring, U-Bolt, Equalizer Beam |
| Steering System | Steering Gearbox, Drag Link, Power Steering Pump, Steering Shaft |
| Brake System | Brake Chamber, Brake Servo, Brake Valve, Slack Adjuster |
Transmission & Drivetrain Parts
| Section/System | Common Spare Parts |
| Clutch System | Clutch Disc, Pressure Plate, Release Bearing, Clutch Booster |
| Gearbox System | Gearbox Assembly, Synchronizer, Gear Set, Bearing, Oil Seal |
| Differential System | Differential Assembly, Crown Wheel & Pinion, Differential Bearing, Repair Kit |
| Driveshaft System | Driveshaft Assembly, Universal Joint, Center Bearing, Slip Yoke |
Cabin & Body Parts
| Section/System | Common Spare Parts |
| Cabin Assembly | Cabin Shell, Cabin Suspension, Cabin Lock, Cabin Mount |
| Dashboard System | Instrument Cluster, Dashboard Panel, Switch Assembly |
| Door System | Door Assembly, Door Lock, Door Handle, Window Regulator |
| Seat System | Driver Seat, Passenger Seat, Seat Shock Absorber |
| Air Conditioning System | AC Compressor, Condenser, Evaporator, Blower Motor |
| Electrical System | Headlamp, Tail Lamp, Fog Lamp, Wiring Harness, Relay |
| Mirror System | Rear View Mirror, Mirror Arm, Mirror Cover |
| Body Exterior Parts | Bumper, Grille, Fender, Mudguard, Step Panel |
