Description
Overview:
The Piston Ring Set (Hepolite) 040 for Petters PAZ Engine is a genuine Lister Petter part designed to restore and maintain correct cylinder sealing on vintage Petters PAZ industrial engines. Manufactured from durable, engine-grade iron for long service life, the rings provide the critical gas seal between piston and bore, helping to maintain compression, control oil, and support efficient combustion. The 040 marking denotes an oversize of +0.040 in (+1.02 mm), intended for use after a rebore or when fitting an oversize piston to bring the bore back to specification. Supplied as unused old stock, the set may show minor tarnish from storage, which does not affect performance. Ideal for engine rebuilds and ongoing maintenance where reliable sealing and consistent running are required.
Key Features:
- Genuine Lister Petter Hepolite rings for assured compatibility with Petters PAZ engines
- Oversize 040: +0.040 in (+1.02 mm) to suit rebored cylinders and oversize pistons
- Robust iron construction for wear resistance and stable sealing under continuous duty
- Helps restore compression, reduce blow-by, and minimise oil consumption
- Precision-ground ring faces and profiles for consistent bedding and reliable performance
- Suitable for vintage engine restoration and routine overhaul work
- Unused old stock: may show cosmetic ageing but remains functionally sound
- Compatible with common workshop practices and tools (e.g. piston ring expander) for straightforward fitting
- Supports efficient starting, smoother running, and improved fuel efficiency when installed correctly
- Backed by OEM specification for correct ring clearances when used with the proper bore size
Typical Applications:
Used on Petters PAZ stationary and mobile installations, including generators, water pumps, cement mixers, compactors, agricultural machinery, and general industrial drives. Suitable wherever a PAZ engine requires a rebore and oversize rings to restore sealing, compression, and dependable day-to-day performance.
Also known as:
Piston ring kit, engine ring set, ring pack, piston sealing rings, compression and oil control rings, oversize +040 (+1.02 mm) ring set, PAZ ring set, engine rebuild ring set, Hepolite 391462/040.
Fits Models:
PAZ
Product Specifications
| L&S Part No. | 391462/040 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Lister Petter |
| OEM No. | 391462/040 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Lister Petter |
| Key Features | - Genuine Lister Petter Hepolite rings for Petters PAZ engines - Oversize 040: +0.040 in (+1.02 mm) for rebored cylinders - Durable iron construction for wear resistance - Precision-ground for consistent bedding and performance - Suitable for vintage engine restoration and maintenance |
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