ARP 900-1300 PISTON RING COMPRESSOR – 4.130" BORE (.020 OVER) FOR 1994–2003 FORD 7.3L POWERSTROKE

Product Description

Build your 7.3L the right way. The ARP 900-1300 Tapered Piston Ring Compressor is CNC-machined from 6061-T6 billet and Type III anodized for durability. Its true-radius, size-specific design slides your piston and rings smoothly into a 4.130" (.020 over) cylinder—perfect for 1994–2003 Ford 7.3L Powerstroke engine builds. Faster installs, less ring distortion, and repeatable results—exactly what you expect from ARP.

ARP 900-1300, 7.3 Powerstroke ring compressor, Ford 7.3L diesel engine, piston installation tool, tapered ring compressor, 4.130 bore, .020 over

Pair this tool with proven ARP hardware to finish your build strong: ARP 250-5801 Main Stud Kit, or choose alternate ring compressor sizes like ARP 900-1100 (4.110" STD bore), ARP 900-0550 (4.055"), or ARP 900-2125 (4.2125").

WHAT ENGINES DOES THIS FIT?
Designed for engines with a 4.130" bore. Common use: 1994–2003 Ford 7.3L Powerstroke builds at .020" over.

WHY A TAPERED, SIZE-SPECIFIC COMPRESSOR?
The true-radius taper centers the piston and uniformly compresses rings, reducing the chance of ring snagging and speeding installation.

WHAT MATERIAL/FINISH DOES ARP USE?
6061-T6 billet aluminum with hard (Type III) anodizing for long service life.

DO I NEED LUBE?
Lightly oil the compressor and cylinder wall; follow your ring manufacturer’s install guidance.

Fitment Details

• Ford Power Stroke 7.3L Diesel — 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
• Cylinder bore: 4.130" (.020" over from 4.110" stock)
• Also works with any engine using a 4.130" bore

Cross Reference & Related ARP Tools

• ARP 900-1100 — 4.110" (STD bore) for 7.3L Powerstroke
• ARP 900-0550 — 4.055" (GM 6.6L Duramax STD)
• ARP 900-2125 — 4.2125" (’07.5–’18 6.7L Cummins)
• ARP 250-5801 — Main Stud Kit for 7.3L Powerstroke
• Shop all ARP at CPP Diesel

Specifications for ARP 900-1300