Products Description

This is a breather sleeve (bleeding sleeve) for SHACMAN heavy‑duty trucks, a key part of the driving system. It is installed inside the axle breather plug to release excess internal air pressure of axle housing, effectively preventing oil leakage and oil blow‑by caused by excessive pressure. Made of tough, wear‑resistant materials, it maintains stable performance even under heavy‑load and rough‑road conditions. It matches OEM standards perfectly, durable and easy to install, a reliable replacement part for SHACMAN X3000, M3000 and F3000 models equipped with HDZ300 middle axle.

Applicable

① Applicable Vehicles: Fits SHACMAN heavy‑duty tractors, mainly Delong series with HDZ300 through‑drive middle axle. Also compatible with other heavy‑duty vehicles adopting the same axle structure.

② Adaptable System: Works seamlessly with factory‑original drive axle components. Matches stock breather plug, axle housing and related chassis parts exactly for direct bolt‑on replacement, no cutting, drilling or modifications required.

③ OE Reference Number: DZ90129320102

④ Interchangeability: Manufactured to OEM exact dimensions, including outer diameter, length and mounting tolerance. Direct swap with original parts, quick to install and remove, cutting maintenance time and labor costs.

⑤ Value‑added Service: We verify compatibility by checking your truck model, axle type and VIN code. We also provide hands‑on guidance for installation and routine inspection, helping avoid premature failure caused by improper assembly.

Materials & Craftsmanship

Core Materials

We craft this breather sleeve with high‑strength wear‑resistant metal material. It withstands frequent air pressure fluctuation and continuous chassis vibration, resisting deformation and abrasion over long‑term service. Even under repeated pressure relief cycles, it keeps stable venting performance without blockage or dimension change. The surface is treated against oil mist and dust corrosion. It can endure harsh chassis environment with oil stain, dust and strong vibration, maintaining normal pressure‑relief function and protecting axle oil seals from damage.

Surface Treatment

The whole sleeve is precision‑machined to guarantee accurate size and smooth surface, ensuring unobstructed air circulation. Edge deburring treatment avoids scratch damage to mating breather plug rubber parts. Anti‑corrosion surface treatment is applied to resist rust and oxidation in complicated chassis working conditions, preventing jam and failure after long‑term running.

Production Craftsmanship

We adopt mature metal processing technology to make the sleeve sturdy and long‑lasting. All key dimensions are strictly controlled during production to ensure perfect fit with original installation interfaces. Every finished sleeve goes through strict inspections: dimension checking, hardness test and anti‑corrosion inspection. Each batch is fully screened to filter out defective goods. We follow original factory production standards closely, so our parts match OEM performance and durability completely.

Production Capacity

We operate mature production lines and professional testing equipment. Our steady monthly output and abundant stock are more than enough to support wholesale and large export orders. We also provide sample support to meet the purchasing needs of dealers, repair shops and vehicle manufacturers.

FAQ

Q: What makes this breather sleeve outperform regular alternatives?

A: Built with high‑strength anti‑wear metal and precision machining, it is far more durable than ordinary sleeves. It stands up to axle internal pressure fluctuation and chassis vibration, resisting rust, deformation and blockage. Precision sizing ensures perfect cooperation with breather plug, maintaining stable pressure‑relief function and effectively preventing axle oil leakage.

Q: Is the quality reliable? How long can it last?

A: Every unit is manufactured to OEM standards and strictly inspected for dimension, hardness and anti‑corrosion performance. With strong wear‑resistant and anti‑corrosion properties, it serves long service life under normal working conditions, ideal for long‑haul heavy‑duty trucks.

Q: What advantages will I get after the replacement?

A: It restores normal pressure‑relief function for drive axle. It fixes common faults such as axle housing internal overpressure and oil blow‑by, protects axle oil seals and other expensive axle components, and cuts future maintenance costs. It helps reduce failure rate of the whole drive axle system.