This Pressure Spring is a genuine Hatz component designed for the 1B-series single-cylinder diesel engines, including the 1B20 and 1B30. Manufactured from high‐tensile spring steel with a corrosion-resistant finish, it provides consistent, controlled pressure within the relevant engine mechanism to keep running characteristics stable. A correct, OEM‐spec spring helps prevent surging and uneven operation by maintaining the designed preload and coil rate across typical engine temperatures and loads. As an exact-fit replacement to OEM No. 50488700, it integrates cleanly into the engine assembly without modification. Trusted for maintenance and repair, it is suitable for workshop rebuilds and routine servicing, helping extend service life and protect surrounding components in demanding site and garden machinery use.

Key Features:
– Genuine Hatz part for assured compatibility and reliability (MPN: 50488700)
– High‐tensile spring steel construction for long, repeatable service life
– Maintains stable operating pressure for smoother running and dependable starting
– Built to Hatz coil rate and free-length tolerances for correct engine behaviour
– Resists heat, oil, fuel, vibration, and contamination typical of diesel engines
– Direct like-for-like replacement; no shimming or modifications required when replacing a worn spring
– Helps reduce erratic running and wear on associated engine components
– Suitable for plant and equipment powered by Hatz 1B-series engines
– Backed by OEM quality control and materials specification
– Genuine Part: ensures correct fit and performance versus non-genuine alternatives

Typical Applications:
Used during scheduled servicing or repairs to restore correct spring force in Hatz 1B engines fitted to compactors, generators, water pumps, mixers, light towers, rollers, and other site or garden machinery. Ideal when addressing symptoms linked to a weakened or damaged spring, or as preventative replacement during engine overhauls.

Also known as:
Compression spring, engine pressure spring, coil spring, return spring, Hatz 1B series spring, OEM pressure coil, diesel engine spring.

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

Alternate Part Numbers:
50488700

Product Specifications