Product Introduction

Structure

This washer is a precision-machined annular component, crafted from high-strength, wear-resistant black polymer composite material (likely reinforced nylon or PEEK). It features a symmetrical design with four evenly spaced rectangular slots on its outer circumference, which are used for anti-rotation and torque transmission. The inner and outer diameters are precision-ground to tight tolerances, ensuring a perfect fit with mating components. The surface has a smooth, matte finish to reduce friction and enhance sealing performance.

Performance

The polymer composite material offers exceptional mechanical properties, including high tensile strength, excellent wear resistance, and superior chemical stability. It is resistant to oil, grease, and most automotive fluids, and maintains its structural integrity in temperatures ranging from -40°C to 150°C. The anti-rotation slots ensure the washer remains securely in place under dynamic loads, preventing misalignment and component failure. Its low-friction surface minimizes wear on mating parts, extending the service life of the entire assembly.

Core Function

1. Acts as a load-distributing element, evenly spreading clamping forces across mating surfaces to prevent localized stress concentrations and component deformation.

2. Serves as a wear-resistant spacer, reducing friction and wear between moving or clamped parts, such as in suspension or axle assemblies.

3. Provides anti-rotation functionality via its slotted design, preventing the washer and associated fasteners from rotating or loosening under vibration and dynamic loads.

4. Enhances the overall reliability and durability of heavy-duty truck components by protecting critical mating surfaces from premature wear and failure.

Washer 810W35613-0050 Sinotruk Sitrak – Precision Differential Spacer for Heavy-Duty Trucks

When your Sitrak differential demands precise clearance control and long-lasting wear resistance, the Washer 810W35613-0050 Sinotruk Sitrak delivers exactly that. Engineered to OEM specifications, this differential shim washer sits at the heart of your drivetrain assembly — quietly preventing metal-to-metal contact, maintaining optimal gear mesh, and extending the service life of your entire axle system. At Mettlead, we supply this genuine-spec component directly from our factory in China, which means you get authenticated quality at a price that protects your procurement budget.

Key Functions and Benefits of Washer 810W35613-0050

This washer is far more than a simple flat disc. It plays a critical role inside the differential housing, and here is precisely how it works for you:

• Precision Gap Adjustment: The Washer 810W35613-0050 compensates for manufacturing tolerances within the differential assembly, ensuring the ring gear and pinion maintain their designed backlash. As a result, gear noise stays minimal and power transfer remains efficient.
• Anti-Wear Protection: Positioned between rotating and stationary components, this shim washer creates a controlled barrier that absorbs micro-friction. Consequently, it prevents premature scoring on expensive differential gears.
• Hardened Surface Finish: Manufactured with heat-treated alloy steel, the washer resists deformation even under extreme axle loads — a necessity for heavy-haul Sitrak applications.
• Exact OEM Dimensional Compliance: Every washer matches the original Sinotruk blueprint for thickness, inner diameter, outer diameter, and surface flatness. Therefore, installation is seamless with zero modification required.
• Extended Drivetrain Lifespan: By maintaining correct clearances, this single component protects the entire differential assembly from cascading wear failures, ultimately saving you thousands in avoided downtime.

In other words, the Washer 810W35613-0050 Sinotruk Sitrak is a low-cost component that delivers high-value protection for your fleet’s most demanding drivetrain systems.

Application Scenario: Where This Washer Works

Understanding exactly where this part fits helps you confirm compatibility and plan maintenance more effectively:

• Compatible Vehicle: Sinotruk Sitrak (Shande Ka / 汕德卡) heavy-duty truck series
• Installation Location: Inside the differential housing, positioned between bearing races and gear assemblies
• Primary Function: Clearance adjustment (shimming) and anti-wear separation within the differential gear set
• Service Condition: High-load, high-temperature environment with continuous rotational stress

Whether your Sitrak trucks operate on long-haul highways or demanding construction routes, this differential washer maintains its dimensional integrity across the full operating temperature range. Moreover, it is commonly replaced during scheduled differential overhauls or whenever gear backlash measurements fall outside specification.

Looking for more Sitrak components? Browse our complete Sitrak Heavy-Duty Parts catalog, or explore our full Chassis System Parts category for related drivetrain components.

Technical Specifications

The following table presents the verified parameters for Washer 810W35613-0050. Every dimension is held to OEM tolerance standards:

Note: If you need exact thickness variants or bulk specifications, our engineering team can provide detailed dimensional drawings upon request.

OEM and ODM Capabilities

Mettlead is not just a parts distributor — we are a factory-direct supplier with full customization capabilities. Here is what that means for your business:

• White-Label Packaging: We can ship Washer 810W35613-0050 under your own brand identity, complete with custom labels, barcodes, and packaging design. This is ideal for distributors building their own aftermarket brand.
• Custom Packaging Solutions: Whether you need individual blister packs for retail or bulk industrial packaging for workshop supply, we adapt to your requirements.
• Strict Quality Control: Every batch undergoes dimensional inspection, hardness testing, and surface finish verification before shipment. Our QC process mirrors OEM factory standards.
• Flexible Order Quantities: From sample orders for testing to container-load volumes for established supply chains, we accommodate your procurement cycle.
• Factory Visit Welcome: We invite procurement managers to visit our facility in China for on-site quality audits and production line inspections. Transparency builds trust.

Additionally, if you source multiple Sinotruk or Sitrak part numbers, we consolidate shipments to reduce your logistics costs. Explore our Sinotruk Sitrak Truck Parts Full Category Guide to see the complete range available for consolidated ordering.

Frequently Asked Questions About Washer 810W35613-0050

What is the exact function of Washer 810W35613-0050 inside the differential?

This washer acts as a precision shim that controls the axial clearance between differential bearing races and gear components. By maintaining the correct gap, it ensures proper gear mesh alignment and prevents metal-to-metal wear between rotating parts. Without it, excessive play would develop, leading to gear noise, vibration, and accelerated component failure.

How do I know if this washer needs replacement?

Typically, you should inspect this washer during any differential overhaul or when you detect increased gear backlash beyond factory specifications. Visible signs include surface scoring, thickness reduction (measured with a micrometer), or deformation. Furthermore, if your differential exhibits unusual whining or clunking under load, worn shim washers are a common root cause.

Is Washer 810W35613-0050 an exact match for the original Sinotruk part?

Yes. Our washer is manufactured to the original Sinotruk dimensional blueprint, including thickness, diameter, flatness, and material hardness specifications. It installs as a direct drop-in replacement with no modifications needed. Consequently, you maintain full OEM performance standards.

Can I order this washer in multiple thickness variants for shimming purposes?

Differential shimming often requires selecting from a range of washer thicknesses to achieve the target backlash. Contact our team to confirm available thickness options under the 810W35613-0050 part family. We can supply assortment kits for workshop use upon request.

What material is this washer made from, and can it handle heavy-load applications?

The Washer 810W35613-0050 is manufactured from heat-treated alloy steel with a surface hardness of HRC 58–62. This ensures it withstands the continuous compressive loads and high operating temperatures found inside Sitrak heavy-duty differentials — even under maximum payload conditions.

Ready to Secure Your Supply? Request a Quote Now

As a procurement manager, you need reliable supply, competitive pricing, and confirmed lead times. Mettlead delivers all three — directly from our factory to your warehouse, with no middlemen inflating your costs.

Here is what happens when you reach out:

1. You send us your required part number (810W35613-0050), quantity, and delivery destination.
2. We respond within 24 hours with unit pricing, lead time, and shipping options.
3. You approve, and we begin production or ship from ready stock.

It is that straightforward. No complicated processes, no hidden fees — just professional B2B supply chain service built for volume buyers.

Contact Us Today to get your personalized quotation for Washer 810W35613-0050 Sinotruk Sitrak. Let us show you why hundreds of international buyers trust Mettlead as their China-based truck parts supplier.