Product Introduction

This precision-engineered copper tube is designed to reliably transfer pressurized gear oil from the transmission’s oil pump to its critical internal components.

• Structure & Material: Made from high-purity copper, it features a smooth, seamless inner bore to minimize flow resistance and ensure consistent oil delivery. The surface is corrosion-resistant, ensuring durability even in harsh under-vehicle environments.

• Performance: The copper construction provides excellent heat dissipation, helping to cool the oil as it circulates. The seamless design prevents leaks and ensures a steady flow of lubricant to bearings, gears, and synchronizers.

• Durability: Copper’s natural corrosion resistance and the tube’s seamless design prevent blockages and leaks, ensuring long service life with minimal maintenance.

• Compatibility: Direct OE replacement, fully matching the length and diameter specifications of the HW19710 transmission’s lubrication system.

Core Function

1. Oil Delivery: Transfers pressurized gear oil from the oil pump to the transmission’s internal components, ensuring they are properly lubricated.

2. Heat Dissipation: The copper construction helps dissipate heat from the oil, maintaining optimal operating temperatures for the transmission.

3. Flow Stability: The smooth, seamless bore minimizes flow resistance, ensuring consistent oil pressure and preventing lubrication starvation.

Transmission Oil Inlet Pipe AZ2229240108 – SINOTRUK HW Series Gearbox

Keep Your SINOTRUK HW Gearbox Running Smoothly with the Right Oil Inlet Pipe

Every heavy-duty transmission depends on a steady, uninterrupted flow of lubricating oil to survive the demands of long-haul routes and heavy payloads. The Transmission Oil Inlet Pipe AZ2229240108 is the lifeline that channels oil directly into your SINOTRUK HW Series Gearbox, ensuring every gear meshes under proper lubrication and optimal operating temperature. Without a reliable oil inlet pipe, even the toughest gearbox can suffer premature wear, overheating, and costly downtime.

At Mettlead, we supply this genuine-spec transmission oil inlet pipe straight from our factory in China — which means you get OEM-matching quality at a price that protects your bottom line. Whether you manage a fleet of HOWO trucks or stock parts for your workshop, this component is built to deliver worry-free performance from day one.

Features and Benefits of the Transmission Oil Inlet Pipe AZ2229240108

Precision-Engineered for the SINOTRUK HW Gearbox

This oil inlet pipe is manufactured to exact OEM dimensions, so it fits directly into the SINOTRUK HW series gearbox housing without any modifications. That means faster installations, fewer headaches for your technicians, and zero risk of oil leaks caused by ill-fitting aftermarket parts.

Durable Material Construction

Crafted from high-grade steel alloy, the pipe resists corrosion, vibration fatigue, and thermal stress — three common enemies in heavy truck transmission systems. As a result, it maintains structural integrity over hundreds of thousands of kilometres, even in the harshest operating environments.

Optimized Oil Flow Design

The internal bore is precision-machined to maintain laminar oil flow at the exact volume the HW gearbox requires. Consequently, your transmission receives consistent lubrication under all load conditions, which extends gear life and reduces maintenance intervals.

Key Advantages at a Glance

• Direct OEM replacement — bolt-on fitment, no drilling or welding required
• Leak-proof sealing surfaces — precision-ground connection points prevent oil seepage
• Vibration-resistant — engineered wall thickness absorbs drivetrain harmonics
• Factory-direct pricing — eliminate middlemen and reduce your per-unit cost
• Strict quality control — every pipe is pressure-tested before leaving our facility

Technical Specifications

Application Scenario: Where Does This Part Fit?

The Transmission Oil Inlet Pipe AZ2229240108 is specifically designed to fit the SINOTRUK HW series gearbox. It serves as a critical gearbox accessory that routes transmission oil from the external supply into the gearbox housing. In practical terms, you will find this part in:

• SINOTRUK HOWO heavy-duty trucks equipped with HW gearboxes (HW15710, HW19710, etc.)
• SINOTRUK SITRAK models utilising HW series transmissions
• Mining dump trucks and construction vehicles that rely on HW gearbox platforms
• Fleet maintenance operations performing scheduled gearbox oil system inspections

If you are maintaining a fleet that runs on SINOTRUK powertrains, stocking this oil inlet pipe ensures you can quickly address any oil delivery issue before it escalates into a full gearbox rebuild. For more SINOTRUK gearbox components, explore our complete Gearbox Parts Collection and our dedicated SINOTRUK HOWO Gearbox Parts page.

OEM/ODM Capability

Mettlead does more than simply supply parts — we partner with distributors and fleet operators to deliver exactly what their market demands. Here is what that looks like in practice:

• White-Label Packaging: We can ship the Transmission Oil Inlet Pipe AZ2229240108 in neutral packaging, ready for your own branding and resale.
• Custom Packaging: Need your company logo, part number cross-reference, or regional compliance labels on the box? We handle the entire packaging design and print process.
• Bulk Order Flexibility: Whether you need 50 units or 5,000, our production line scales to meet your demand without sacrificing lead time or quality.
• Strict Quality Control: Every oil inlet pipe undergoes dimensional inspection, pressure testing, and surface quality checks before dispatch — so you can confidently stand behind the parts you sell.

Browse our full range of SINOTRUK HOWO Truck Parts to discover more components available for white-label distribution.

Customer Case Study: Solving Gearbox Oil Supply Issues Across a 120-Truck Fleet

A logistics company based in West Africa was experiencing recurring oil starvation in the HW gearboxes across their fleet of 120 HOWO tippers. After investigating, their head mechanic traced the root cause to cracked and corroded transmission oil inlet pipes — the aftermarket replacements they had been using simply could not withstand the combination of high ambient temperatures and constant vibration on unpaved roads.

They contacted Mettlead looking for a dependable supply of Transmission Oil Inlet Pipe AZ2229240108 that matched genuine SINOTRUK specifications. Within two weeks, we shipped 150 units in custom-branded packaging directly to their warehouse in Lagos. Six months later, they reported zero repeat failures on any truck fitted with our oil inlet pipes — and their gearbox maintenance costs dropped by an estimated 30%.

This is what happens when you choose a factory-direct supplier who puts quality control at the centre of every order. Today, this client continues to reorder SINOTRUK HW gearbox parts from Mettlead on a quarterly basis.

Frequently Asked Questions (FAQ)

What is the function of the Transmission Oil Inlet Pipe AZ2229240108?

This pipe acts as the primary conduit that delivers transmission oil into the SINOTRUK HW series gearbox. It ensures a consistent supply of lubricant reaches the internal gears and bearings, which prevents metal-on-metal contact, reduces heat build-up, and extends the overall service life of the gearbox. In other words, it is a small part with a critical job.

Is this oil inlet pipe a direct fit for my HOWO truck?

Yes. The AZ2229240108 is manufactured to original equipment dimensions and is designed to fit directly onto any SINOTRUK HW series gearbox without modifications. However, we always recommend confirming the OEM part number against your truck’s gearbox model before ordering, just to be certain.

What causes a transmission oil inlet pipe to fail?

Over time, constant exposure to high temperatures, road vibration, and corrosive elements can weaken the pipe walls. Additionally, poor-quality aftermarket materials may develop micro-cracks that lead to oil leaks. Once a leak begins, the gearbox receives insufficient lubrication — and that is when expensive internal damage starts.

How can I tell if my transmission oil inlet pipe needs replacement?

Common signs include visible oil drips near the gearbox oil inlet, a noticeable drop in transmission oil level between services, unusual gearbox noise during shifts, and in severe cases, overheating warnings. If you spot any of these symptoms, inspecting the oil inlet pipe should be your first step.

Can I order this part in bulk with my own branding?

Absolutely. Mettlead offers white-label and fully custom packaging for bulk orders of the Transmission Oil Inlet Pipe AZ2229240108. This is ideal for distributors and parts retailers who want to build their own brand while sourcing factory-quality components at competitive pricing.

What is the typical lead time for shipping?

For in-stock items, we typically dispatch within 3–5 business days. Bulk or custom-packaged orders usually ship within 7–15 business days, depending on quantity. We ship globally and offer flexible logistics solutions to suit your timeline.

Ready to Secure Your Supply of Transmission Oil Inlet Pipe AZ2229240108?

Whether you need a single piece for an urgent repair or a container load for your distribution network, Mettlead is ready to deliver. As a factory-direct supplier of SINOTRUK HW Series Gearbox parts, we offer the price advantage, quality assurance, and flexible service that procurement managers count on.

Take the next step today:

• Tell us your required quantity and shipping destination
• Receive a competitive, no-obligation quotation within 24 hours
• Enjoy fast production, reliable packaging, and secure global delivery

Contact Us Now to request your quote for the Transmission Oil Inlet Pipe AZ2229240108 — or ask us about any other SINOTRUK, HOWO, SHACMAN, FAW, or WEICHAI parts your business needs. We are here to help you keep your trucks moving.