Premium-quality Howo Clutch Booster engineered for extreme durability. Trusted by fleets worldwide — experience zero compromise with certified Sinotruk HOWO components. Your journey to unmatched performance starts here.
For heavy-duty trucks, clutch fatigue is a real issue. The Howo Clutch Booster significantly reduces pedal effort while providing precise clutch disengagement. Engineered for 12/16‑speed manual and AMT gearboxes, our booster ensures smooth gear changes and extends clutch life. As part of our premium Howo truck parts lineup, each Howo Clutch Booster is factory calibrated to match your transmission’s hydraulic and pneumatic requirements.
Whether you operate a Howo A7, T7H, TX, or Sitrak C7H, the correct Howo Clutch Booster eliminates clutch drag, reduces driver fatigue, and prevents premature throwout bearing failure. Choose from standard Φ102mm, lightweight Φ90mm, or AMT‑specific models with integrated position sensors.
Uses vehicle air system (0.7–1.0 MPa) to multiply driver input, reducing pedal force by up to 30% for fatigue‑free operation.
Hydraulic + pneumatic combined action ensures smooth modulation, preventing jerky starts and reducing driveline shock.
AMT‑specific boosters feature a built‑in linear sensor for TCU to read clutch travel, enabling automated shifting.
Standard boosters come with an adjustable pushrod (230–260mm) for fine‑tuning free play and clutch stroke.
| Parameter | Standard Heavy (Φ102) | Lightweight (Φ90) | AMT Dedicated |
|---|---|---|---|
| Part Number | WG9725230041 | WG9525230062 | WG9700240035 |
| Booster Bore (mm) | Φ102 | Φ90 | Φ102 |
| Working Hydraulic Bore (mm) | Φ25 | Φ22 | Φ25 |
| Operating Pressure (MPa) | 0.7–1.0 | 0.7–0.9 | 0.7–1.0 |
| Gearbox Compatibility | 12/16‑speed manual | 8/10‑speed manual | AMT auto |
| Weight (kg) | 6.5 | 5.2 | 7.0 (with sensor) |
WG9525230062 (Lightweight)
Φ90/Φ22, 0.7–0.9 MPa, 5.2kg. For T5G/TX 8/10‑speed manual boxes.
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WG9700240035 (AMT)
Φ102/Φ25 with integrated position sensor for T7H/TH7/Sitrak AMT transmissions.
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WG9725230041 (Standard MT)
Φ102/Φ25, 0.7–1.0 MPa, stroke 38‑42mm. For 12/16‑speed A7/T7H/TH7 6×4/8×4.
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WG9725230051 (Enhanced)
Φ102/Φ25, strengthened seals for Euro 5/6 engines. Fits T7H/Sitrak C7H.
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Howo A7 / T7H / TH7 / TX (6×4/8×4)
Heavy‑duty 12/16‑speed manual trucks use WG9725230041. AMT versions use WG9700240035. All with Φ102 booster.

Howo T5G / TX lightweight series
Models with 8/10‑speed manual boxes use lightweight Φ90 booster WG9525230062. Also fits some Sitrak C7H Euro5.
“Replaced my old clutch booster with WG9725230041. Now the clutch feels like a sedan – so light! Shifting is precise even in city traffic.”
– Carlos, Driver, Brazil“We installed 20 AMT boosters (WG9700240035) on our T7H fleet. The position sensor works flawlessly with the transmission control unit.”
– Li Wei, Fleet Supervisor, China“Needed a lightweight booster for our T5G. WG9525230062 was a perfect fit, and the reduced weight saved a few kilos. Very happy.”
– Ahmed, Truck Workshop, UAE“Fast shipping to Russia. The booster came with adjustment instructions. My drivers no longer complain about heavy clutch.”
– Dmitry, Fleet Owner, RussiaMaximize Clutch Life & Driver Comfort with a Genuine Howo Clutch Booster – The clutch booster is a critical component that often gets overlooked until failure occurs. A properly functioning Howo Clutch Booster not only reduces physical strain on drivers but also protects the clutch release bearing and flywheel from heat damage. Our boosters are manufactured using high‑grade cast iron for the housing and corrosion‑resistant alloy for the hydraulic cylinder.
All units are honed to mirror‑finish surface (Ra ≤0.2μm) to ensure seal longevity. For workshop owners, we stock complete rebuild kits, including diaphragms, o‑rings, and pushrod boots. Heavy‑duty applications (mining, logging) benefit from the reinforced WG9725230060 with upgraded dust boots and high‑temperature grease. For AMT trucks, the integral position sensor in WG9700240035 provides real‑time clutch position feedback to the TCU, enabling faster and smoother gear shifts. We also supply the necessary mounting brackets and air line fittings for retrofitting older trucks. All Howo Clutch Booster units come with a 12‑month unlimited‑mileage warranty. Keep your Howo shifting like new – choose genuine Sinotruk parts.
Need assistance identifying the correct booster for your VIN? Contact our support team with a photo of your old unit and gearbox model. We respond within 2 hours. Genuine Howo Clutch Booster – the muscle behind every smooth gear change.