Description
Overview:
The Piston Ring Set Oversize 020 Plus is a genuine Lister Petter replacement for HA and HW engines, supplied as a matched set to restore correct compression and oil control. Specified at +0.020 inch oversize (0.51 mm), it is intended for engines that have been re-bored or require an oversize ring pack to achieve proper cylinder sealing. Manufactured to OEM standards from durable, wear-resistant ring-grade materials, this set helps reduce blow-by and oil consumption while supporting efficient combustion. Suitable for builders maintaining or refurbishing vintage industrial engines, it offers a dependable fit and long service life. Part number 572 11930/020. Supplied as unused old stock; items may show light tarnishing or storage dirt that does not affect performance.
Key Features:
- Genuine Lister Petter part for assured fit and compatibility
- Oversize +0.020 inch (0.51 mm) for re-bored or worn cylinders
- OEM-standard materials for reliable sealing and long wear life
- Helps restore compression, reduce blow-by, and lower oil use
- Correct ring configuration for HA/HW engines for consistent running
- Supplied as a matched set to maintain ring clearance and balance
- Straightforward installation with standard ring compressor tools
- Suitable for restoring vintage and legacy power units
- Unused old stock: may show cosmetic tarnish or storage dust only
- Lister Petter reference: 572 11930/020
Typical Applications:
Engine rebuilds and overhauls on Lister Petter HA/HW power units used in generators, pumps, compressors, site equipment, agricultural machinery, and marine auxiliaries. Ideal when cylinders have been re-bored to +0.020 inch (0.51 mm) or when regaining compression and oil control in tired engines.
Also known as:
HA/HW +0.020 piston rings (0.51 mm), 20‐thou oversize ring set (0.51 mm), engine compression and oil control ring set, Lister Petter 572-11930/020 ring pack, HA/HW rebore rings.
Fits Models:
HA, HW, HAHW
Product Specifications
| L&S Part No. | 572 11930/020 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Lister Petter |
| OEM No. | 572 11930/020 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Lister Petter |
| Key Features | - Genuine Lister Petter part for HA and HW engines - Oversize +0.020 inch (0.51 mm) for re-bored cylinders - OEM-standard materials ensure reliable sealing - Reduces blow-by and oil consumption - Supplied as a matched set for balanced performance |
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