ARP 899-7400 PISTON RING COMPRESSOR 3.740" BORE FOR 2003-2007 FORD 6.0 POWERSTROKE ENGINE

Product Description

Drop pistons cleanly—every time. The ARP 899-7400 tapered piston ring compressor is CNC-machined from 6061-T6 billet aluminum and black-anodized for durability. Its true-radius taper compresses rings evenly so your 2003–2007 Ford 6.0L Powerstroke builds go faster with less risk of ring or skirt damage. Size is laser-marked for quick ID; simply oil, align, and tap the assembly home—done.

Ideal for pro engine shops and serious DIY builds using a 3.740" nominal bore (approx. 95 mm). Also suitable for other engines using the same bore size. Pair with ARP fasteners and Ultra-Torque for a complete, repeatable assembly workflow.

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Fitment

• Ford 6.0L Powerstroke (V8) — 2003–2007 trucks & compatible E-Series applications (nominal 3.74" bore)
• Any engine using a 3.740" bore (verify piston & cylinder bore before ordering)

Recommended ARP Pairings (on CPP Diesel)

• ARP 250-4202 Head Stud Kit — 2003–2007 6.0L Powerstroke
• ARP 250-4205 CA625+ Head Stud Kit — 2003–2007 6.0L Powerstroke
• ARP 150-5801 Main Stud Kit — 2003–2007 6.0L Powerstroke
• ARP 100-9909 Ultra-Torque Assembly Lube or ARP 100-9910 Ultra-Torque 10 oz
• Shop all ARP at CPP Diesel

WHAT BORE SIZE DOES THIS TOOL FIT?

3.740" (approx. 95 mm). Always confirm your actual bore and piston spec before installation.

WILL THIS WORK ON THE 2003–2007 FORD 6.0L POWERSTROKE?

Yes—this is the correct nominal bore size for 6.0L Powerstroke builds. Verify your specific block and piston measurements.

WHY A TAPERED COMPRESSOR INSTEAD OF A BAND STYLE?

The true-radius taper compresses rings uniformly and centers the piston, speeding installs and reducing ring snagging and skirt scuff risk.

DO I NEED LUBE?

Yes. Light oil on the tool and skirt is recommended. For fasteners used in your build, use ARP Ultra-Torque to achieve accurate clamp load.

Specifications for ARP 899-7400