Sinotruk HOWO Brake Booster Connector WG9000361204

Key Specifications

Why Material Brass and Coated Steel?

Sinotruk HOWO Brake Booster Connector WG9000361204 operate in an extremely harsh environment; repeated high-pressure air surges, road moisture, salt spray, and wide temperature fluctuations. Material choice directly determines service life and braking system integrity.

Advantages of brass:

Excellent corrosion resistance : does not rust in humid or salt-laden environments.

Slightly malleable: when torqued, the brass deforms microscopically to form a tighter metal-to-metal seal, reducing air leakage.

Good thermal conductivity : helps dissipate heat generated by continuous high-pressure airflow, maintaining stable operating temperatures.

Role of coated steel:

For applications demanding higher mechanical strength, coated steel connectors offer superior torque resistance and vibration tolerance. The multi-layer anti-corrosion coating withstands road salt and moisture, preventing rust-induced thread seizure or seal failure even after years of service.

Skyond’s selection logic:

We offer both material options to suit different operating environments. For highhumidity, coastal areas or regions using deicing salts (e.g., Southeast Asia, Russian winter roads), brass is recommended. For high-vibration, heavy-load conditions (mining, construction sites), coated steel is the preferred choice. Both materials pass strict salt-spray and pressure tests to guarantee long-term reliability in their respective applications.

What Does M22×1.5 Mean for You?

The Sinotruk HOWO Brake Booster Connector WG9000361204 uses a M22×1.5 metric fine thread. This is not an arbitrary choice and it is the exact interface standard for Sinotruk HOWO air brake systems.

Engineering value of fine threads:

Compared with coarse threads, fine threads (1.5 mm pitch) have a smaller lead angle, providing better self-locking performance. Under the frequent pressure pulsations and vehicle vibrations inherent in air brake systems, fine threads resist loosening more effectively meaning once torqued, the connector stays tight without loosening over time. Additionally, the larger sealing contact area, combined with precise machining, achieves air-tight sealing without any thread sealant or tape.

100% interchangeability with OEM parts:

We machine each thread strictly to Sinotruk’s original drawings controlling pitch diameter, major diameter, minor diameter, and flank angle within tight tolerances. For repair shops and fleet operators, this means no additional modification or adapters just screw it in and the job is done, minimising vehicle downtime.

Skyond Manufacturing Process & Quality Control

Our production base in Jinan is equipped with advanced CNC machining centres and automated lines. The production of WG9000361204 involves the following key control points:

Incoming material inspection: Each batch of brass bar or coated steel is tested for chemical composition and hardness to ensure it meets design specifications.

Precision machining: CNC lathes complete thread cutting and end-forming in a single setup, guaranteeing coaxiality and surface finish. Thread cleanliness and sharpness directly affect the ease of installation and sealing effectiveness and we use go/no-go gauges to inspect every single connector, ensuring smooth engagement with standard ports.

Surface treatment: Brass connectors are polished to remove burrs; coated steel parts receive multi-layer anti-corrosion coating, with salt-spray testing exceeding 48 hours.

100% final inspection: Every connector undergoes visual inspection, thread gauge verification, and dimensional sampling before packaging. Only fully compliant parts enter finished goods inventory.

Installation & Maintenance Convenience

The Sinotruk HOWO Brake Booster Connector WG9000361204 is designed for practical on-site replacement:

No sealant required

The precise thread form and surface finish achieve a reliable metal-to-metal seal without paste or tape. This eliminates contamination risks and secondary leakage from sealant ageing.

Standard tools

Uses common metric wrenches ; no special tools needed.

Quick changeover

A single connector can be replaced in under 10 minutes, significantly reducing truck downtime.

FAQ

Q1: Which HOWO models are compatible with WG9000361204?

This connector fits all Sinotruk HOWO series trucks, including heavy-duty trucks, light-duty trucks, dump trucks, mixer trucks, and tractors manufactured from 2005 onward. If you are unsure about fitment, please provide your vehicle VIN or chassis number; our technical team will confirm compatibility within 24 hours.

Q2: What is the difference between the brass and coated steel versions? How should I choose?

Brass offers superior corrosion resistance that is ideal for coastal areas, high-humidity regions, or roads treated with de-icing salts. Coated steel provides higher mechanical strength  better suited for high-vibration, heavy-load applications such as mining and construction sites. Our sales team can advise based on your specific operating conditions.

Q3: Is this an OEM or aftermarket part?

We supply OEM-grade quality connectors. Skyond maintains a long-term close relationship with Sinotruk, and all our products are manufactured to original specifications with rigorous quality testing. We offer both genuine and high-quality aftermarket options to suit different procurement budgets and usage requirements.

Q4: What is the minimum order quantity? Do you offer discounts for bulk orders?

MOQ is 1 piece. For volume orders, unit prices decrease with larger quantities. We welcome bulk orders and have a dedicated container loading team to ensure safe shipment.

Q5: How soon can you ship after payment?

Regular orders are packed and shipped within 7–45 days after payment. Urgent orders can be expedited; please contact us to discuss.

Q6: Do you supply other HOWO parts besides this connector?

Skyond offers a full range of Sinotruk HOWO and A7 parts, including engine components, transmission parts, chassis parts, filters, brake pads, and more with over 130,000 items in stock. For any other parts, please email us and we will respond within 24 hours.

Why Choose Skyond?

15 years of industry expertise

Deep product knowledge and established supply chain resources in heavy-truck and construction machinery parts.

Direct factory supply from Jinan

Located in Sinotruk’s home city, ensuring 100% match with original specifications.

Global shipping capacity

Exported to Russia, Central Asia, Southeast Asia, Africa, South America, and more – monthly capacity exceeds 10,000 pieces.

Comprehensive service

Full support from product consultation and selection to after-sales assistance. If any quality issue arises, we will repair, replace, or refund to your satisfaction.