PK Tool
PT51100 Piston Ring Compressor 90–175mm Self-Locking
Part No: PT51100
Professional-quality self-locking piston ring compressor for pistons from 90 mm to 175 mm. Standing 150 mm (6 inch) high, the ratchet pawl locks the compressor in place so you can install pistons confidently without premature release.
90–175mm Range
Self-Locking Ratchet
150mm High
Professional Quality
Steel
Features
- Adjustable range: 90 mm to 175 mm (3½” to 7″) diameter
- 150 mm (6″) body height for full piston ring coverage
- Self-locking ratchet pawl prevents premature release during installation
- Positive locking action holds compression securely while piston is guided in
- Professional quality build for repeated workshop use
- Operated with a hex key (included)
The self-locking ratchet pawl is the key feature — it keeps the rings fully compressed until the piston is seated, preventing ring damage.
Authorised Australian Dealer — This product is sourced directly from PK Tool Australia and is backed by full Australian manufacturer warranty and local support.
Specifications
| Part Number | PT51100 |
|---|---|
| Bore Range | 90–175mm (3½”–7″) |
| Tool Height | 150mm (6″) |
| Locking Mechanism | Self-Locking Ratchet Pawl |
| Application | Piston Ring Compression & Installation |






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