Product Introduction

• Structure: A robust assembly combining a pneumatic pressure vessel, a hydraulic master cylinder, and integrated control valves. It features a durable black painted steel reservoir, a rubber dust boot to protect the push rod, and precision-machined aluminum valve components.

• Performance: Converts compressed air pressure into hydraulic force to significantly reduce the driver’s pedal effort. This makes clutch engagement and disengagement smoother, especially during long hauls, reducing driver fatigue and improving overall drivability.

Core Function

1. Pedal Effort Reduction: Assists the driver by providing pneumatic power to the hydraulic clutch system, making pedal operation lighter.

2. Smooth Engagement: Ensures consistent and smooth clutch engagement and disengagement for better drivability.

3. Fatigue Reduction: Reduces physical strain on the driver, enhancing comfort during long journeys.

Clutch Booster Cylinder WG9725230042 for Sinotruk HOWO Heavy-Duty Trucks

Genuine-Quality Clutch Booster Cylinder WG9725230042 — Built to Keep Your HOWO Fleet Moving

When your Sinotruk HOWO truck demands smooth, effortless gear shifts under heavy loads, the clutch booster cylinder is the unsung hero working behind the scenes. The Clutch Booster Cylinder WG9725230042 amplifies hydraulic pressure from the clutch pedal, reducing driver fatigue and protecting your drivetrain from premature wear. In other words, this single component directly affects uptime, safety, and total cost of ownership across your entire fleet.

At Mettlead, we supply this critical clutch hydraulic component straight from our quality-controlled production lines in China. As a result, you get OEM-equivalent performance at a factory-direct price — with no middlemen inflating your procurement budget. Whether you manage a logistics company in Africa, a mining operation in Southeast Asia, or a distribution fleet in the Middle East, we are ready to deliver exactly what your HOWO trucks need.

Explore our full range of clutch system components or browse all available Sinotruk HOWO truck parts to complete your order in one shipment.

Key Features and Benefits of Clutch Booster Cylinder WG9725230042

Reliable Hydraulic Pressure Amplification

This clutch booster cylinder converts light pedal effort into powerful hydraulic force. Consequently, drivers experience significantly less leg fatigue during stop-and-go urban delivery routes or long-haul operations — a practical benefit that directly improves productivity.

Precision-Machined Cylinder Bore

The internal bore is machined to tight tolerances, ensuring consistent piston travel and a leak-free seal over hundreds of thousands of kilometres. Furthermore, the high-quality sealing rings resist heat degradation from clutch fluid temperatures, extending service life between rebuilds.

Direct OEM Replacement — No Modifications Needed

Designed as a drop-in replacement for the original WG9725230042 specification, this clutch booster cylinder matches the factory mounting points, hydraulic port dimensions, and stroke length. Therefore, your workshop can complete the swap quickly, minimising vehicle downtime.

Corrosion-Resistant Construction

The cylinder body features a corrosion-resistant surface treatment that withstands harsh operating environments — from humid tropical climates to dusty desert roads. This means fewer premature failures caused by external oxidation.

Strict Quality Control at Every Stage

Every Clutch Booster Cylinder WG9725230042 shipped by Mettlead passes pressure testing, dimensional inspection, and seal integrity checks before leaving the factory. As a result, you receive parts that meet or exceed OEM performance standards — without the OEM price tag.

Technical Specifications — Clutch Booster Cylinder WG9725230042

Application Scenarios — Which Vehicles Fit Clutch Booster Cylinder WG9725230042?

The Clutch Booster Cylinder WG9725230042 is specifically engineered for the Sinotruk HOWO heavy-duty truck platform. Below you will find the primary applications where this clutch hydraulic component plays a vital role:

• Sinotruk HOWO A7 Tractor Heads — Long-distance hauling with frequent clutch engagement at loading docks and rest stops.
• Sinotruk HOWO Dump Trucks — Mining and construction sites where constant low-speed manoeuvring demands a responsive clutch booster.
• Sinotruk HOWO Cargo Trucks — Urban and intercity logistics that require smooth gear transitions to protect cargo integrity.
• Sinotruk HOWO Mixer Trucks — Concrete delivery operations needing precise clutch control when approaching pour sites.

In each of these scenarios, the WG9725230042 clutch booster cylinder ensures the driver maintains full clutch authority while requiring minimal pedal effort. This directly translates to reduced maintenance costs and happier drivers — two things every fleet manager values.

Need parts for other Sinotruk systems? Visit our comprehensive Sinotruk truck parts catalogue for a complete overview.

OEM / ODM Capabilities — Tailored to Your Market

White-Label and Custom Packaging

If you are building your own aftermarket brand, Mettlead offers white-label packaging services for the Clutch Booster Cylinder WG9725230042. We print your logo, part number, and brand identity on boxes and labels — so your customers see your brand, not ours.

Flexible Order Quantities

Whether you need a trial order of 10 pieces or a container load of 2,000 units, our production capacity can accommodate your requirements. Additionally, we support mixed-container shipping, allowing you to combine clutch booster cylinders with other HOWO parts in a single shipment to save on freight costs.

Quality Assurance You Can Verify

We welcome procurement managers to visit our facilities in China for on-site quality audits. Seeing our inspection process first-hand gives you the confidence to place larger orders. Moreover, every shipment can include test reports and dimensional inspection certificates upon request.

Frequently Asked Questions — Clutch Booster Cylinder WG9725230042

What are the signs that a Clutch Booster Cylinder WG9725230042 needs replacement?

Common symptoms include a noticeably harder clutch pedal, incomplete clutch disengagement, hydraulic fluid leaking around the booster body, or a spongy pedal feel even after bleeding the system. If your driver reports increased pedal effort or difficulty shifting gears, the booster cylinder is a likely culprit.

How does the clutch booster cylinder differ from the clutch master cylinder?

The clutch master cylinder generates initial hydraulic pressure when the driver presses the pedal. The booster cylinder, on the other hand, amplifies that pressure using a pneumatic-hydraulic assistance mechanism. Together, they form the complete clutch actuation system. Part number WG9725230042 specifically refers to the booster (slave-side amplifier) on HOWO trucks.

Can I use WG9725230042 on non-HOWO Sinotruk models?

This part number is designed for the HOWO platform. While some Sinotruk models share similar clutch architecture, cross-compatibility depends on the specific chassis code and transmission pairing. We recommend confirming your VIN or chassis number with our team before ordering to ensure a perfect fit.

What maintenance extends the life of this clutch booster cylinder?

Regular clutch fluid replacement (every 40,000–60,000 km or per manufacturer recommendation) prevents seal degradation caused by moisture-contaminated fluid. Additionally, inspecting the dust boot for cracks and checking pushrod alignment during routine services helps prevent premature booster failure.

Does Mettlead supply the associated sealing kits for this booster cylinder?

Yes. We stock rebuild seal kits compatible with the WG9725230042 clutch booster cylinder. Ordering seals alongside the complete unit allows your workshop to perform future rebuilds without sourcing parts separately — saving both time and money.

Ready to Secure Your Supply of Clutch Booster Cylinder WG9725230042?

Every day your trucks sit idle waiting for parts is a day of lost revenue. Mettlead eliminates that risk with factory-direct pricing, fast lead times, and a dedicated export team that understands the urgency of B2B truck parts procurement.

Here is what happens when you reach out:

1. Send your enquiry — Include part number WG9725230042, required quantity, and destination port.
2. Receive a competitive quote — We respond within 24 hours with pricing, lead time, and shipping options.
3. Confirm and ship — Flexible payment terms, secure logistics, and full shipment tracking until the parts reach your warehouse.

Take the next step now. Contact us to request a quote for the Clutch Booster Cylinder WG9725230042 — or any other Sinotruk HOWO parts your fleet requires. Our team is standing by to help you keep your trucks on the road.