The Joint 4×8 for Hatz 1B-series diesel engines is a small, precision sealing component used to prevent leaks at threaded fittings and unions. Supplied as a Genuine Hatz part, it is manufactured to tight tolerances for a secure, repeatable seal on critical engine circuits. The 4×8 sizing denotes an approximate 4 mm internal diameter and 8 mm external diameter, making it suitable for compact fuel or oil connections found on single-cylinder Hatz engines. Designed for reliable service in demanding environments, it helps maintain pressure, reduce seepage, and support efficient engine operation. Ideal for routine maintenance or repairs on engines such as the Hatz 1B20 and 1B30, it offers a straightforward, like-for-like replacement that fits and seals as intended.

Key Features:
– Genuine Hatz replacement part for assured compatibility and performance
– Precisely sized joint (approx. 4 mm ID 8 mm OD) for accurate seating and sealing
– Provides a tight seal on small-diameter fuel and oil connections to minimise leaks
– Built from durable, heat- and fluid-resistant materials for long service life
– Helps maintain system pressure and engine efficiency under daily use
– Straightforward to fit during routine servicing with minimal downtime
– Suitable for harsh operating conditions common to compact diesel machinery
– OEM reference: 50110800 for easy identification and ordering
– Reliable choice for preventative maintenance and like-for-like replacement
– Backed by Hatz manufacturing standards for consistent quality

Typical Applications:
Used as a sealing washer on small fuel lines, return lines, bleed screws, and light oil connections on Hatz 1B engines. Common on compactors, generators, pumps, and similar equipment where dependable sealing of small threaded joints is required to prevent drips, maintain pressure, and support clean, efficient engine operation.

Also known as:
Sealing washer, crush washer, sealing ring, gasket ring, flat washer gasket, engine sealing shim.

Fits Models:
1B20, 1B30, 1B40, 1B50

Alternate Part Numbers:
50110800

Product Specifications