Description
Overview:
The Piston 85 + 1,0 for Hatz Engines (OEM No. 00331504) is a genuine Hatz replacement component designed to restore reliable performance in small industrial diesel engines. Built from a durable aluminium alloy and precision machined, it helps maintain correct compression and efficient combustion under heavy daily use. The "85 + 1,0" designation denotes an 85 mm bore with a +1.0 mm oversize, typically used after a cylinder re-bore to recover correct clearances. This piston suits a range of Hatz air-cooled diesel engines commonly installed in compactors, generators, pumps, compressors and other contractor equipment. As a genuine part, it offers correct geometry, ring groove accuracy and skirt profile, supporting long service life and dependable running in demanding construction and landscaping environments.
Key Features:
- Genuine Hatz part for assured compatibility and quality
- OEM number 00331504 for straightforward identification
- 85 mm bore, +1.0 mm oversize for engines requiring a re-bored cylinder fit
- Precision-machined crown, ring grooves and skirt for stable compression and low blow-by
- Robust aluminium alloy construction for strength, heat transfer and reduced weight
- Designed for straightforward fitting by competent technicians, helping reduce downtime
- Supports clean combustion and reliable cold starts when used with correct rings and clearances
- Suitable for heavy-duty use in construction and garden machinery powered by Hatz diesel engines
Typical Applications:
Used during scheduled overhauls, repairs after wear or scuffing, and complete engine rebuilds on Hatz-powered equipment such as plate compactors, site generators, water pumps, compressors, hydraulic power packs and lighting towers. Ideal for restoring compression, reducing oil consumption and improving overall engine efficiency in tough site and outdoor conditions.
Also known as:
Oversize 85 mm piston (+1.0), diesel cylinder piston, reciprocating piston component, compression piston for Hatz diesel, cylinder bore piston 85 mm, piston crown for industrial engines.
Product Specifications
| L&S Part No. | 00331504 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Hatz |
| OEM No. | 00331504 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Hatz |
| Key Features | - Genuine Hatz part ensures compatibility and quality - 85 mm bore, +1.0 mm oversize for re-bored cylinders - Precision-machined for stable compression and low blow-by - Aluminium alloy construction for strength and heat transfer - Suitable for Hatz diesel engines in construction machinery |

