Product Introduction

This Trailer Air Hose WG9000360140 is an OEM heavy-duty coiled air brake hose, specifically designed for Sinotruk heavy-duty trucks and commercial vehicle trailer combinations. Constructed from high-grade, oil-resistant rubber with a reinforced internal structure, it delivers reliable, consistent air pressure transmission under heavy-load, long-haul, and harsh operating conditions.

Performance

• High-Grade Rubber Construction: The heavy-duty, oil-resistant rubber compound provides exceptional durability and resistance to abrasion, ozone, and weathering, extending service life in all environments.

• Reinforced Internal Structure: The multi-ply, fabric-reinforced design ensures burst resistance and maintains consistent air pressure transmission, even under repeated flexing and pressure fluctuations.

• Coiled Design: The coiled structure provides flexibility and self-retraction, preventing tangling and damage during vehicle articulation and trailer coupling/uncoupling.

• Precision-Machined Fittings: The zinc-plated steel fittings ensure a secure, leak-proof connection to the vehicle’s air brake system, with a red protective cap to prevent contamination during storage.

• OEM Exact Fit: Optimized for Sinotruk heavy-duty truck models, it matches original length, coil diameter, and fitting specifications for seamless installation.

Core Function

1. Transmits compressed air pressure from the tractor to the trailer’s air brake system, enabling reliable brake actuation and control—a core part of heavy duty truck brake parts.

2. Provides flexibility and self-retraction to accommodate vehicle articulation and trailer movement, preventing damage and ensuring consistent performance.

3. Withstands repeated flexing and pressure fluctuations, maintaining reliable air pressure transmission over millions of coupling/uncoupling cycles.

Trailer Air Hose WG9000360140 – OEM Sinotruk Coiled Air Brake Hose for Heavy-Duty Trucks

When your fleet depends on split-second braking response between tractor and trailer, there’s no room for compromise. The Trailer Air Hose WG9000360140 is a genuine OEM-spec coiled air brake hose engineered exclusively for Sinotruk heavy-duty truck and trailer combinations. Built to transmit compressed air with unwavering consistency, this hose keeps braking systems responsive under the most punishing long-haul, heavy-load, and extreme-weather conditions. As a wholesale distributor or fleet parts agent, you can trust this component to protect your reputation — and your customers’ safety — mile after mile.

Key Features & Benefits of Trailer Air Hose WG9000360140

Every detail of this Sinotruk trailer air hose is purpose-built to outperform in real-world commercial transport environments. Here’s what sets it apart:

• OEM-Grade Compatibility: Manufactured to match Sinotruk’s original equipment specifications, ensuring a perfect fit without modification — saving your customers time and labor costs during installation.
• High-Grade Oil-Resistant Rubber: The outer layer resists degradation from diesel, hydraulic fluid, and road chemicals, extending service life even in contaminated environments.
• Reinforced Internal Structure: A multi-layer reinforcement design withstands continuous pressure cycling and vibration, preventing premature fatigue cracking that plagues inferior aftermarket hoses.
• Consistent Air Pressure Transmission: Maintains stable airflow between tractor and trailer brake systems, eliminating delayed braking response that can lead to jackknifing or rear-end collisions.
• Coiled Design for Flexibility: The spiral coil absorbs articulation and movement during turns, reversing, and uneven road surfaces — without kinking or restricting airflow.
• Wide Temperature Tolerance: Performs reliably from extreme cold (-40°C) to high heat (+80°C), making it suitable for operations across Africa, the Middle East, Central Asia, and Northern Europe.
• Wholesale-Ready Pricing: Factory-direct supply from Mettlead means competitive margins for distributors and agents, with flexible MOQ to match your market demand.

In short, this trailer air hose doesn’t just connect two vehicles — it connects your business to a reputation for reliability. Explore our full range of heavy truck braking system components to build a complete inventory for your customers.

Technical Specifications – Trailer Air Hose WG9000360140 Sinotruk

Accuracy matters when sourcing replacement parts for commercial fleets. The following specifications reflect the OEM parameters of this Sinotruk trailer air brake hose:

Need to cross-reference this part number with your existing inventory? Our technical team can verify fitment for your specific fleet configuration. Simply contact us with your vehicle model and chassis number.

Application Scenarios – Where Does Trailer Air Hose WG9000360140 Fit?

Understanding exactly where this component works helps you recommend it with confidence to your end customers. This Sinotruk trailer air hose serves as the critical pneumatic link between the tractor unit and the trailer’s braking system, transmitting compressed air to control trailer brake engagement and release.

Compatible Vehicle Models

• Sinotruk HOWO (all heavy-duty tractor variants)
• Sinotruk HOWO A7
• Sinotruk HOWO T7H
• Sinotruk HOWO TX
• SITRAK C7H (Sinotruk-MAN technology platform)
• Other CNHTC tractor-trailer combinations using standard pneumatic brake coupling

Typical Use Cases

1. New Vehicle Assembly: OEM-spec hose supplied for factory-built tractor-trailer units rolling off the production line.
2. Aging & Deterioration Replacement: Rubber hoses naturally degrade over time due to UV exposure, ozone, and thermal cycling. Fleet operators typically replace trailer air hoses every 2–3 years or at signs of surface cracking.
3. Damage Replacement: Road debris, improper coupling, or accidental snagging during reversing can puncture or tear the hose, requiring immediate replacement to restore braking function.
4. Brake System Overhaul: During scheduled maintenance or DOT/roadworthiness inspections, worn air hoses are replaced as part of a complete braking system service.

For distributors serving African, Southeast Asian, and Middle Eastern markets — where Sinotruk trucks dominate heavy transport — this part number moves consistently. Browse our complete Sinotruk truck parts catalog to identify complementary fast-moving items for your inventory.

OEM/ODM Capability & Wholesale Partnership

At Mettlead, we don’t just sell parts — we build supply chain partnerships that help your business grow. Here’s what we bring to the table as your China-based sourcing partner:

• Factory-Direct Pricing: We eliminate middlemen, giving you the margin advantage you need to compete in price-sensitive markets.
• White-Label & Custom Packaging: Want your own brand on the box? We offer private-label packaging services so you can build brand equity in your local market.
• Strict Quality Control: Every batch undergoes pressure testing, dimensional inspection, and material verification before shipment — because a brake component failure is never acceptable.
• Flexible MOQ: Whether you’re testing a new market with a trial order or restocking a high-volume SKU, we accommodate order sizes that make sense for your business.
• Fast & Reliable Delivery: Established logistics partnerships ensure your orders reach you on time, whether by sea, air, or rail.
• Secure Payment Options: We support T/T, L/C, Western Union, and trade assurance — whatever gives you peace of mind.
• Factory Visits Welcome: We invite serious partners to visit our facilities in China to inspect quality processes firsthand.

Moreover, our catalog covers the full spectrum of Chinese heavy truck brands including Sinotruk HOWO parts, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON — making us your one-stop consolidation source.

Frequently Asked Questions – Trailer Air Hose WG9000360140

Q1: Is this trailer air hose WG9000360140 an original Sinotruk part or aftermarket?

This hose is manufactured to OEM-equivalent specifications, meaning it matches the exact dimensions, material composition, and performance standards of the original Sinotruk part. It functions as a direct drop-in replacement without any modification required.

Q2: How do I know when a trailer air hose needs replacement?

Look for visible signs of aging: surface cracking, hardening of the rubber, oil swelling, abrasion wear-through, or air leaks at the fittings. Additionally, if the coil has lost its memory and no longer retracts properly, it’s time for a new hose. Fleet best practice recommends inspection every 6 months and replacement every 2–3 years regardless of visible condition.

Q3: Can this air hose WG9000360140 withstand extreme temperatures?

Absolutely. The rubber compound is formulated to remain flexible down to -40°C and resist softening up to +80°C. This makes it suitable for operations in desert heat, tropical humidity, and sub-zero winter conditions alike.

Q4: What happens if a trailer air hose fails while driving?

If the supply line fails, the trailer brakes will automatically engage (fail-safe design), bringing the vehicle to a stop. If the control line fails, the driver loses the ability to modulate trailer braking independently. Either scenario is dangerous at highway speeds — which is why preventive replacement is critical.

Q5: Does this trailer air hose fit non-Sinotruk trucks?

While WG9000360140 is designed specifically for Sinotruk models (HOWO, A7, T7H, TX, SITRAK C7H), many Chinese heavy trucks share similar pneumatic coupling standards. However, we always recommend verifying the part number and connector specifications before cross-fitting. Our team can help you confirm compatibility — just reach out to us with your vehicle details.

Q6: What is the minimum order quantity for wholesale buyers?

MOQ is flexible and depends on your order composition. For single-SKU orders of this trailer air hose, typical MOQ starts at 50–100 pieces. Mixed-container orders combining multiple part numbers enjoy even more flexibility. Contact our sales team to discuss a plan tailored to your market volume.

Q7: How is the trailer air hose packaged for export?

Standard packaging is individual poly bag per unit, packed into export-grade cartons. We also offer white-label packaging with your brand name, logo, and part number printed on the box — ideal for distributors building their own aftermarket brand identity.

Ready to Secure Your Supply? Let’s Talk.

Your customers depend on safe, reliable braking — and you depend on a supplier who delivers quality parts on time, every time. The Trailer Air Hose WG9000360140 Sinotruk is in stock and ready to ship to distributors and agents worldwide.

Here’s your next step:

1. Tell us your target quantity and destination market.
2. Receive a competitive factory-direct quotation within 24 hours.
3. Approve samples (if needed) and confirm your order.
4. Receive your shipment — on time, quality-guaranteed.

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Contact Mettlead Now to Request Your Wholesale Quote

Whether you need 50 pieces or 5,000, we’re here to support your growth with reliable Sinotruk parts at prices that protect your margins. Don’t let stockouts cost you customers — secure your supply today.