Draper Piston Ring Compressor

These high-performance Draper piston ring compressors are engineered to simplify and secure piston installation during engine assembly or repair. Crafted from blue-tempered spring steel, they deliver consistent compression force, minimizing ring distortion and preventing cylinder wall damage.

Each compressor features a precision worm gear mechanism for smooth, even tightening, along with a wide band to distribute pressure uniformly. Designed for both professional and DIY engine work, these tools make piston insertion fast, controlled, and reliable.

Features & Benefits

• Constructed from durable, blue-tempered spring steel

• Corrosion-resistant finish for extended tool life

• Worm drive mechanism allows precise and adjustable compression

• Wide steel band prevents ring overlap or damage

• Ideal for garages, workshops, and engine rebuilders

Models & Ranges:

• Draper 51845: Suitable for piston diameters from 53–125mm (2"–5")

• Draper 51847: For larger pistons, covering 90–175mm (3-1/2"–7")

• Draper 08444: Compact model ideal for smaller pistons from 53–125mm (2"–5"), featuring a ratchet locking mechanism and quick-release lever for added convenience

Whether you're rebuilding a small car engine or handling larger powertrains, Draper's piston ring compressors offer the control and reliability you need for a smooth fit, every time.

*Product images are for illustrative purposes only and may differ from the actual product