Product Introduction

Structure: A robust cast aluminum cylinder body with a precision-machined piston and rod assembly, featuring a mounting eye for chassis attachment and a clevis end for connection to the differential lock linkage. The cylinder includes a port for compressed air supply and seals to prevent air leakage.Performance: Converts pneumatic pressure into linear force to actuate the differential lock, ensuring reliable engagement and disengagement. The lightweight aluminum construction resists corrosion, while the precision seals maintain air pressure for consistent operation.Design: Directly interchangeable with original equipment, engineered to fit perfectly with the differential lock linkage and chassis mounting points, ensuring smooth and responsive lock actuation.

Core Function

• Lock Actuation: Converts pneumatic pressure into mechanical force to engage or disengage the differential lock, improving traction in low-friction conditions.

• Force Transmission: Transmits actuation force from the pneumatic system to the differential lock mechanism, ensuring reliable operation.

• Corrosion Resistance: The cast aluminum body resists rust and corrosion, extending service life in harsh operating environments.

• OE Replacement: Directly interchangeable with the original adapter, preserving the differential lock system’s performance and reliability.

Differential Lock Cylinder Adapter WG9000360514 – Genuine Sinotruk Replacement Part

When your heavy-duty truck’s differential lock system fails to engage, the culprit is often a worn or damaged cylinder adapter. The Differential Lock Cylinder Adapter WG9000360514 is engineered specifically for Sinotruk HOWO vehicles, serving as the critical link between the pneumatic circuit and the differential lock mechanism. Sourced directly from our factory, this adapter ensures precise air-path connectivity so your diff lock engages and disengages exactly when it should — keeping your fleet moving through the toughest terrain without costly downtime.

At Mettlead, we supply this OEM-grade component at factory-direct pricing, backed by strict quality control and fast global delivery. Whether you’re maintaining a single truck or managing a fleet of hundreds, this adapter delivers the reliability your operations demand.

Key Features and Benefits of the WG9000360514 Differential Lock Cylinder Adapter

This isn’t just another replacement part sitting on a shelf. Every detail of the WG9000360514 adapter is purpose-built to withstand the demanding conditions inside a heavy truck’s rear axle assembly. Here’s what sets it apart:

• Precision-Machined Threads: Ensures a leak-free, airtight seal within the pneumatic circuit, preventing pressure loss that could cause incomplete diff lock engagement.
• High-Grade Material Construction: Manufactured from durable alloy steel that resists corrosion, vibration fatigue, and thermal stress encountered in rear axle environments.
• OEM-Exact Dimensions: Matches the original Sinotruk factory specifications perfectly, so installation is straightforward with no modifications required.
• Reliable Pneumatic Connectivity: Acts as the bridge between the air supply line and the differential lock cylinder, ensuring consistent and responsive lock activation.
• Extended Service Life: Built to endure hundreds of thousands of kilometers under heavy load conditions, reducing your replacement frequency and total cost of ownership.

In other words, this adapter does one job — and it does it exceptionally well. It keeps the air flowing where it needs to go, so your differential lock responds instantly when road conditions demand extra traction.

Application Scenario: Where the WG9000360514 Adapter Works

Understanding exactly where this component fits helps you confirm compatibility and appreciate its role in your vehicle’s drivetrain system.

Compatible Vehicles

The WG9000360514 Differential Lock Cylinder Adapter is designed to fit Sinotruk HOWO heavy-duty trucks equipped with pneumatically actuated rear differential locks. It is commonly found in the following series:

• HOWO A7 series trucks
• HOWO T7H series trucks
• HOWO 371/375HP tractor units
• SITRAK C7H series (verify OEM cross-reference)

Functional Role

Installed on the rear axle assembly, this adapter serves as the pneumatic junction point for the differential lock cylinder. Specifically, it:

1. Connects the compressed air supply line to the diff lock actuator cylinder.
2. Maintains a sealed air path under high pressure to ensure the lock engages fully.
3. Allows controlled release of air pressure when the driver disengages the differential lock.

Without a properly functioning adapter, air leaks can cause partial engagement — a dangerous condition that accelerates gear wear and compromises traction when you need it most.

Looking for more Sinotruk rear axle components? Browse our complete Rear Axle Parts catalog for related items.

Technical Specifications

Note: Always cross-reference the part number WG9000360514 with your vehicle’s VIN or existing component to confirm fitment before ordering.

OEM/ODM Capability and Custom Packaging

We understand that procurement managers often need more than just a part — you need a supply partner who adapts to your business requirements. That’s exactly what Mettlead offers.

• White-Label Packaging: Need to sell under your own brand? We provide neutral or fully customized packaging with your logo, part numbers, and branding materials.
• Custom Specifications: If your application requires a modified version of the WG9000360514 adapter — different thread pitch, material grade, or surface finish — our engineering team can accommodate OEM/ODM requests.
• Strict Quality Control: Every batch undergoes dimensional inspection, pressure testing, and material verification before shipment. We don’t cut corners because your reputation depends on the parts you deliver.
• Factory-Direct Pricing: By eliminating middlemen, we pass genuine cost savings directly to you — without sacrificing quality.

Explore our full range of Sinotruk HOWO Truck Parts to see what else we can supply for your inventory needs.

Frequently Asked Questions About the WG9000360514 Differential Lock Cylinder Adapter

What exactly does the differential lock cylinder adapter do?

Think of it as the gatekeeper for compressed air in your diff lock system. The WG9000360514 adapter connects the air supply line to the differential lock cylinder on the rear axle. When you activate the diff lock from the cab, air pressure travels through this adapter to engage the locking mechanism. If the adapter is cracked, corroded, or has damaged threads, air escapes — and the lock either won’t engage fully or won’t hold under load.

How do I know if my differential lock cylinder adapter needs replacement?

Several symptoms point to a failing adapter. You might notice the diff lock indicator light flickering, hear a hissing sound near the rear axle when the lock is engaged, or experience delayed or incomplete lock engagement. In some cases, the lock may disengage unexpectedly under load. If you detect any air leakage around the adapter connection point, replacement is strongly recommended before the issue worsens.

Is this an OEM original part or an aftermarket replacement?

The WG9000360514 adapter we supply is a high-quality aftermarket part manufactured to OEM specifications. It matches the original Sinotruk factory dimensions, material standards, and performance requirements. Many of our customers find it indistinguishable from the original in both fit and longevity.

Can I install this adapter without special tools?

Yes, in most cases. Since it uses a standard threaded connection, a qualified mechanic can install it with common hand tools. However, we recommend applying thread sealant tape to ensure an airtight fit, and torquing to the manufacturer’s specified value to avoid over-tightening or stripping.

Does this adapter fit other Chinese truck brands like Shacman or FAW?

The WG9000360514 is specifically designed for Sinotruk HOWO vehicles. While some Chinese truck brands share similar pneumatic systems, we strongly advise against cross-fitting without verifying the part number against your vehicle’s parts catalog. If you need differential lock components for Shacman, FAW, or Dongfeng trucks, browse our comprehensive Chinese Truck Parts catalog — we likely have the exact match for your model.

What is the typical lead time for bulk orders?

For standard stock items like the WG9000360514, we typically ship within 3–7 business days. Larger bulk orders or custom-packaged shipments may require 10–15 days depending on quantity and packaging specifications. We always confirm delivery timelines before order confirmation so there are no surprises.

Ready to Secure Your Supply? Let’s Talk.

You’ve found the right part. Now let’s make sure you get it at the right price, with the right lead time, and in the packaging your business needs.

Whether you’re ordering a single unit for an urgent repair or stocking hundreds for your distribution network, our team is ready to provide a competitive quote tailored to your volume and shipping requirements.

Get your personalized quote today: Contact Us Now — tell us your quantity, destination, and any packaging preferences, and we’ll respond within 24 hours.

Mettlead — Your factory-direct source for Sinotruk HOWO parts, shipped globally with confidence.