1PC M27x2 Male Brass Oil Level Sight Glass Window (Hex) — for Compressor Gearbox A compact, durable sight glass designed to give fast, reliable visual oillevel checks on compressor gearboxes. The brass construction and clear sight window provide corrosion resistance and good visibility, while the M27x2 male thread and hex body make installation straightforward and secure. Key benefits Instant visual oillevel checks without opening the gearbox, reducing downtime and contamination risk. Durable brass body resists corrosion and wear in typical compressor environments. Hexagonal head simplifies installation and removal with standard wrenches. Simple, reliable replacement or upgrade for many compressor gearbox ports that accept M27x2 male fittings. Main features and attributes Quantity: 1 piece Thread: M27x2 male (metric) Material: Brass body with clear sight glass window Shape: Hexagonal head for wrench engagement Function: Oil level sight glass for compressor gearbox applications Intended use: Fit into matching M27x2 female ports on gearboxes and housings How it solves common problems Eliminates frequent disassembly for routine oil checks by providing a visible window into oil level. Reduces the risk of contamination by enabling checks through the sealed fitting. Simplifies maintenance scheduling by making oil condition and level visible at a glance. Installation and handling Designed to install into an M27x2 threaded port on a compressor gearbox or compatible housing. Hex body accepts standard wrench sizes for secure tightening and removal. Sold as a single replacement or spare part (1PC). Use cases Routine maintenance on a air compressor gearbox: quickly confirm oil level before operation to prevent running dry and premature wear. Onsite compressor units in construction or rental equipment: provide fast visual checks between jobs to minimize downtime. Industrial compressor systems: use as a spare sight glass for gearbox housings that accept M27x2 threaded fittings for efficient inventory and replacement. Compatibility note Intended for use where an M27x2 male sight glass fits the gearbox or housing thread. Verify port thread specification before . Materials and performance expectations Brass construction offers good corrosion resistance and mechanical strength for typical compressor gearbox environments. Clear sight window provides a reliable view of oil level; performance is dependent on correct installation and matching thread size. Package contents 1 x M27x2 male brass oil level sight glass window (hex) If you require a replacement sight glass for an M27x2 port on a compressor gearbox, this singlepiece brass unit provides a durable and simple solution for visible oillevel monitoring.