4.075 Bore Ring Compressor

Features:

• Precision CNC-machined from 6061-T6 aluminum
• Designed for 4.075-inch Duramax engine bores
• True-radius taper for smooth piston installation
• Fits 2001–2016 6.6L Duramax engines
• Base relieved for wire O-ring clearance
• Hard anodized finish for lasting durability
• Engraved size marking for quick identification
• Prevents piston ring snagging or distortion
• Trusted by professional engine builders
• Compatible with standard and metric rings
• Ensures repeatable, damage-free installations
• Ideal for performance or full rebuild projects

Get Your Duramax Build Started The Right Way

When you’re rebuilding a 6.6L Duramax, you want every detail to go smoothly, and piston installs are no place to mess around. The ARP 900-0750 4.075 Bore Ring Compressor takes the frustration out of engine assembly by giving you the precision and reliability you need from the first cylinder to the last. It’s built specifically for 2001–2016 GM Silverado and Sierra 2500HD/3500HD trucks, so you’re not dealing with a generic tool that barely fits. This compressor uses a true-radius design that gently tapers each ring into the bore, eliminating the risk of catching or damaging a ring. The result is a smooth, stress-free install that feels right every time. Whether you're a weekend builder or a full-time diesel mechanic, the clean fit and repeatable performance will have you wondering why you didn’t upgrade sooner. If you want to protect your investment and save yourself a ton of hassle during reassembly, this is the kind of tool that earns its keep in your box.

Built With Precision To Match Your Engine Demands

The ARP 900-0750 Ring Compressor is engineered for precision piston installation in 4.075-inch bore engines, specifically those powering 2001–2016 Duramax-equipped Silverado and Sierra HD trucks. Made from 6061-T6 billet aluminum, this compressor is CNC-machined to exact tolerances to ensure a seamless fit for your application. Its true-radius taper allows piston rings to compress evenly and slide effortlessly into the cylinder without dragging or binding. The base of the sleeve is relieved to accommodate wire O-rings, which is essential when working with modern performance engines. Finished in a hard Type 3 anodizing, it resists wear, galling, and corrosion for long-lasting use across multiple engine builds. For quick identification during high-paced assembly, the bore size is clearly engraved in large, easy-to-read numbers. Trusted by professional engine builders around the world, ARP compressors are known for making engine work more consistent and far less stressful. This tool is purpose-built for serious builders who value accuracy and durability.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed specifically for 4.075-inch bore applications
• Fits 2001–2016 GM 6.6L Duramax engines
• True-radius taper ensures smooth piston entry
• Machined from 6061-T6 billet aluminum tubing
• Base is relieved to clear wire O-rings
• Type 3 hard anodized for long-lasting durability
• Large engraved bore size for easy identification
• Used by professional engine builders for precise installations
• Superior alternative to generic or standard tapered tools
• Compatible with standard and metric piston rings
• Helps prevent piston ring damage during engine assembly