2580501 1184131 258-0501 118-4131 Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit Nylon WR
For excavator loader operators and maintenance teams working in construction, mining, or agricultural settings, the boom arm and bucket hydraulic cylinders are the "power core" that drives critical tasks—whether lifting heavy construction materials with the boom arm or scooping and dumping gravel with the bucket. Any malfunction in these cylinders, such as hydraulic fluid leakage caused by worn seals, can bring equipment operations to a standstill, resulting in missed project deadlines and unexpected repair expenses. The key component that safeguards the reliability of boom arm and bucket hydraulic systems is the Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit (Nylon WR), a precision-engineered set of seals designed to fit seamlessly into excavator loader hydraulic cylinders. These seals create a tight, leak-proof seal that prevents fluid loss, which would otherwise reduce hydraulic pressure, weaken the boom arm and bucket’s lifting capacity, and accelerate wear on cylinder components. To ensure this seal kit matches the exact specifications of a particular excavator loader’s hydraulic system, relying on accurate part numbers is crucial. The designated part numbers for this high-performance Nylon WR seal kit are 2580501, 1184131, 258-0501, and 118-4131; these numbers serve as a universal reference for technicians and procurement staff, confirming that the kit aligns with the cylinder’s size, pressure rating, and material compatibility requirements of the excavator loader’s hydraulic system. Among these part numbers, 258-0501 and 118-4131 are widely used in local parts suppliers’ inventory systems, acting as quick verification tools to avoid ordering incorrect kits—a mistake that could leave excavator loaders out of service for days or even weeks, increasing operational costs.
In practical scenarios, such as browsing online parts marketplaces or checking warehouse stock lists, part numbers like 2580501 and 1184131 are often shown in both hyphenated (258-0501, 118-4131) and non-hyphenated formats. This flexibility is intentional, as it adapts to the varied inventory management systems used by different suppliers, ensuring the Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit (Nylon WR) is easy to find no matter where parts are sourced. You will commonly see 258-0501 paired with 118-4131 in supplier catalogs, with their non-hyphenated counterparts 2580501 and 1184131 listed alongside them—all with the same goal: to identify the exact seal kit designed for excavator loader boom arm and bucket hydraulic cylinders, not for other heavy machinery like bulldozers or skid-steer loaders. Whether you search using 2580501 or 118-4131, the seal kit’s main function remains unchanged: it forms a durable seal that withstands the rigors of daily use, keeping hydraulic fluid contained even when the excavator loader is performing high-intensity tasks—such as lifting full buckets of concrete or repeatedly lowering the boom arm on uneven job site terrain.
For maintenance technicians responsible for repairing or servicing excavator loaders’ boom arm and bucket hydraulic systems, double-checking part numbers—including 2580501, 1184131, 258-0501, and 118-4131—before purchasing the seal kit is an essential step. Selecting a seal kit with mismatched part numbers can lead to serious issues: ill-fitting seals may cause immediate fluid leaks, which not only waste expensive hydraulic oil but also allow dirt, sand, and moisture to enter the cylinder, leading to corrosion and early component failure. The 258-0501 part number, along with 118-4131, 2580501, and 1184131, guarantees that every seal in the kit meets strict industry standards for dimensions, flexibility, and resistance to hydraulic fluid degradation. Moreover, since 2580501 and 118-4131 are indexed in global hydraulic parts databases, familiarizing oneself with these numbers can speed up the sourcing process—especially during emergency repairs, where restoring the excavator loader’s boom arm and bucket functionality quickly is essential to minimizing project delays.
