3'' PISTON RING COMPRESSOR 60-175MM #4021 (VEH24061)

The CTA Tools 4021 Standard Double-Band Piston Ring Compressor (also indexed locally under inventory code VEH24061) is a specialized automotive workshop tool designed to evenly contract piston rings flat into their grooves, allowing the piston assembly to slide into the engine block cylinder without binding or fracturing.

Key Specifications & Architectural Features

Compression Capacity Range: Fully adjustable to accommodate piston diameters spanning 60mm to 175mm (2.4" to 6.9"), masking the vast majority of standard passenger car and small truck engine layouts.

Band Depth: 3 inches (75mm), ensuring complete structural coverage over multi-ring configurations (top compression, second scraper, and lower oil control rings) simultaneously.

Dual-Band Construction: Manufactured using high-tensile, heat-treated spring steel bands that prevent uneven flared expansion under pressure.

Anti-Slip Security Edge: Features an enlarged crimped safety border along the base edge to catch flush on the engine deck, strictly preventing the compressor band from accidentally slipping downward inside the cylinder bore during installation.

Controlling Mechanism: Equipped with a fine-tooth ratcheting lock integrated directly into the side tensioner. The band diameter is compressed down or expanded outwards using standard square-drive hand tools.