711W30715-6152 Master Cylinder With Reservoir

The 711W30715-6152 HOWO T5G Master Cylinder with Reservoir is key for the HOWO T5G's brakes. It turns brake pedal force into steady hydraulic pressure-this pressure goes to wheel brakes to stop the truck reliably. The built-in reservoir keeps brake fluid steady, no air gets in, and braking stays consistent. That's vital for the T5G's logistics and heavy-load use.

Good materials fit the T5G's needs: strong aluminum alloy cylinder (handles 20MPa), resists rust. Precision stainless steel piston moves smooth, wears little. Reservoir is tough plastic, seal is high-temp nitrile rubber-handles 125℃ engine bay heat. Takes frequent braking, 8-550Hz vibrations, -40℃~105℃ temps. Rarely cracks, jams, or leaks-lasts long. Fits T5G's original brake system perfect: holes, outlets, pedal links match. Swap direct-no pipe/pedal changes. Tested before shipping: 48h pressure hold, brake cycles, waterproof-meets T5G's standards.

Steady pressure for heavy loads: Piston/cylinder super smooth (Ra≤0.3μm), low resistance. Even fully loaded T5G (31 tons) gets 18-20MPa pressure. No downhill brake fading-stopping force stays.

Durable for long hauls: Aluminum resists fluid/salt rust. Stainless piston lasts 1.5x longer. Seal handles 350,000+ brakes-good for 500,000+ km T5G runs.

T5G-specific: 550ml reservoir fits T5G's system-no frequent topping. Clear cover with scale-check fluid easy, avoid air. 

Easy T5G replacement: Matches original bolts (M10×1.25), outlets (M16×1.5), pedal pin. Basic T5G maintenance knowledge enough-35-45 mins to swap.

Only for HOWO T5G (4×2, 6×2, 8×4). No other HOWO (T7H, TH7) or non-HOWO (X3000, J7)-different brake specs, mounts, pedal sizes.

Product Model: 711W30715-6152

Fits trucks: HOWO T5G series (4×2, 6×2, 8×4)

Type: Master Cylinder with Integrated Reservoir

Function: Converts pedal force to hydraulic pressure; stores/supplies brake fluid

Material: Cylinder (aluminum alloy); piston (stainless steel); reservoir (engineering plastic); seal (nitrile rubber)

Installation: Direct replacement (matches T5G's original parts)

Working conditions: Max 20MPa; DOT 4; -40℃~105℃; 550ml; resists 8-550Hz vibration

Q1: Works on T7H?

A1: No-only T5G. T7H has bigger brakes, different specs-causes issues.

Q2: Hard pedal after install?

A2: Check if pipe's blocked (flush with DOT 4). If clear, check piston movement (clean or replace cylinder).

Q3: How often to check?

A3: Every 30,000 km/6 months. Look for leaks, pedal return, fluid between MIN/MAX.

Q4: Bleed brakes after replacing?

A4: Yes-must bleed. T5G's pipes are long. Bleed right rear→left rear→right front→left front, test feel.

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