Product Introduction

Structure

This cabin lock bush is a precision-engineered composite component, featuring a cylindrical steel outer sleeve with a yellow zinc-plated anti-corrosion finish, a central high-strength steel inner sleeve, and a black rubber bushing securely bonded between them via high-temperature vulcanization. The rubber bushing is designed with two raised locating tabs on its end face for precise installation alignment, ensuring it fits perfectly into the cabin lock mechanism.

Performance

The steel sleeves provide exceptional structural rigidity and load-bearing capacity, while the rubber bushing is formulated from high-grade natural rubber to deliver excellent vibration damping and resistance to fatigue. The zinc-plated finish offers superior protection against rust and corrosion, and the entire assembly maintains consistent performance in temperatures ranging from -40°C to 120°C, making it suitable for heavy-duty truck operation in diverse climates.

Core Function

1. Serves as a critical pivot and damping component in the cabin lock mechanism, allowing smooth articulation while isolating vibrations and noise.

2. Reduces friction and wear between the moving parts of the cabin lock, extending the service life of the entire locking system.

3. Maintains the precise alignment of the cabin lock components, ensuring reliable engagement and disengagement of the cabin door.

4. Absorbs impact loads during door operation, preventing damage to the lock mechanism and improving the overall durability of the cabin structure.

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Cabin Lock Bush AZ1608440032 for Sinotruk Sitrak – Factory Direct Supply

When your Sitrak cabin lock starts rattling, sticking, or wearing unevenly, chances are the bush behind it has quietly given up. The Cabin Lock Bush AZ1608440032 is a small but critical component that cushions every locking action, reduces metal-on-metal friction, and keeps your cabin lock mechanism operating smoothly day after day. Sourced directly from our factory lines, this genuine-spec replacement bush restores the precise fit your Sinotruk Sitrak cabin deserves — at a price that makes bulk procurement painless.

At Mettlead, we specialize in supplying authentic-quality parts for SINOTRUK, SITRAK, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON trucks to buyers worldwide. Every cabin lock bush we ship passes strict quality control, so you can order with confidence whether you need ten pieces or ten thousand.

Key Functions and Benefits of the Cabin Lock Bush AZ1608440032

This isn’t just a rubber-and-metal sleeve — it’s the silent guardian that stands between a smooth cabin lock and an expensive repair bill. Here’s what it actually does for your fleet:

• Friction Buffering: The bush sits between moving lock components, absorbing vibration and preventing direct metal contact. As a result, your lock mechanism wears evenly and lasts significantly longer.
• Smooth Locking Action: By maintaining precise clearances, this bush ensures the cabin lock engages and disengages without sticking, jamming, or requiring excessive force.
• Noise Reduction: Road vibrations constantly test cabin fittings. A fresh lock bush dampens rattles and knocks that signal wear, keeping the cab quieter for drivers.
• Corrosion Resistance: Manufactured with materials selected for harsh operating environments, the bush resists moisture ingress and chemical degradation over extended service intervals.
• OEM-Matched Dimensions: Precision-engineered to match the original AZ1608440032 specification, so installation is straightforward with no modifications needed.

In other words, replacing a worn cabin lock bush early prevents cascading damage to the lock body, striker plate, and surrounding cabin sheet metal — saving your maintenance budget in the long run.

Application Scenario: Where This Part Belongs

Compatible Vehicle Models

The Cabin Lock Bush AZ1608440032 is specifically designed for the Sinotruk Sitrak series of heavy-duty trucks. It fits directly into the cabin lock assembly on Sitrak C7H and G7 models equipped with the standard hydraulic cabin tilt system. Furthermore, cross-referencing confirms compatibility across multiple Sitrak production years where the AZ1608440032 part number is specified in the OEM parts catalog.

Functional Role in the Cabin System

Positioned within the cabin lock mechanism, this bush serves as a wear-resistant liner that guides the lock pin during engagement. Every time a driver tilts the cabin for engine access or secures it for driving, the bush absorbs the mechanical stress of that action. Without it, metal components grind directly against each other, leading to sloppy lock engagement, increased play, and eventually a cabin that won’t stay securely latched at highway speeds.

For a complete overview of Sitrak cabin and chassis system components, browse our categorized parts catalog.

Technical Specifications

Need the full Sitrak parts breakdown? Visit our Sinotruk Sitrak Truck Parts Full Category Guide for every system and sub-assembly.

OEM/ODM Capability and Custom Packaging

Whether you’re a regional distributor building your own brand or a fleet operator standardizing parts inventory, Mettlead adapts to your requirements:

• White-Label Packaging: We supply cabin lock bushes in neutral packaging, ready for your own branding and labeling. This means you can integrate our parts seamlessly into your existing product line without revealing the source.
• Custom Packaging: Need specific box sizes, multilingual labels, or barcoded packaging for warehouse scanning? Our production team accommodates custom packaging requests at scale.
• Strict Quality Control: Every batch undergoes dimensional inspection and material verification before dispatch. Consequently, you receive parts that meet or exceed OEM tolerances — consistently.
• Factory Direct Pricing: Because we manufacture and source directly from Chinese OEM-tier facilities, there are no middlemen inflating your cost. You get competitive pricing that protects your margins.
• Fast, Reliable Delivery: Our logistics team handles international shipping daily, so whether you need air freight for urgent orders or sea freight for bulk containers, we deliver on schedule.

Additionally, we welcome buyers to visit our facilities for on-site inspection. Seeing our quality processes firsthand gives procurement teams the confidence they need before committing to long-term supply agreements.

Explore more Sitrak heavy-duty parts available for immediate order from our warehouse.

Frequently Asked Questions About the Cabin Lock Bush AZ1608440032

What are the signs that a cabin lock bush needs replacement?

The most common indicators include excessive play or looseness in the cabin lock, a rattling noise when driving over rough roads, difficulty engaging or disengaging the lock, and visible cracking or deformation of the existing bush. If the cabin feels less secure when latched, the bush has likely worn beyond its service limit.

Is this cabin lock bush an exact match for the original Sitrak part?

Yes. The AZ1608440032 bush is manufactured to OEM-equivalent dimensional specifications. It drops directly into the original lock assembly without any machining, shimming, or modification. The fit, material hardness, and wear characteristics mirror the factory-installed component.

How long does a cabin lock bush typically last before needing replacement?

Service life depends on operating conditions — trucks running on rough, unpaved roads or tilting the cabin frequently for maintenance will wear the bush faster. Generally speaking, inspection during routine cabin maintenance intervals (every 50,000–80,000 km) is recommended. Replace immediately if any wear symptoms appear.

Can I order this part in small quantities for testing before committing to bulk?

Absolutely. We understand that procurement managers need to verify quality before scaling up orders. Our minimum order quantity is flexible, and we’re happy to supply sample quantities so you can inspect dimensions, material quality, and fitment before placing a larger order.

Does the cabin lock bush come with installation hardware?

The AZ1608440032 is supplied as the bush component itself. Installation typically requires only pressing or sliding the bush into the lock housing — no additional hardware is needed. However, if your lock assembly requires related components such as pins or retaining clips, we can supply those separately.

Ready to Secure Your Supply? Get a Quote Today

Your fleet can’t afford cabin lock failures on the road, and your budget can’t afford inflated middleman pricing. With Mettlead, you get the Cabin Lock Bush AZ1608440032 for Sinotruk Sitrak at factory-direct cost, backed by strict quality control and fast international shipping.

Whether you need 50 pieces or 5,000, our team is ready to provide pricing, lead times, and shipping options tailored to your location and timeline.

Take the next step: Contact us now to request a quotation, ask technical questions, or arrange a factory visit. Let’s keep your Sitrak fleet running smoothly — one precision part at a time.