Product Description
Install 7.3L Powerstroke pistons the right way. The ARP 900-1100 PISTON RING COMPRESSOR is a precision CNC-machined, true-radius, tapered sleeve sized specifically for a 4.110" bore (standard bore 1994–2003 Ford 7.3L Power Stroke). Type 3 hard-anodized 6061-T6 billet delivers smooth, scuff-free ring compression and repeatable results for fast, damage-free piston installs.
Purpose-built for engine builders and serious DIYers, this ARP tool speeds up assembly, protects ring end gaps, and guides the piston skirt squarely into the cylinder so you can focus on clearances and torque strategy—not fighting your rings.
Pair it with other ARP hardware for a bulletproof 7.3L build: ARP 250-5801 Main Stud Kit, ARP 250-6303 Rod Bolt Kit, and larger-bore options like ARP 900-1300 (4.130") Ring Compressor. Shop the full ARP line at CPP Diesel | ARP.
FITMENT
• 1994–2003 Ford 7.3L Power Stroke (standard 4.110" bore)
• Also fits any engine using a 4.1100" bore where a tapered sleeve compressor is appropriate.
WHAT’S INCLUDED
• (1) ARP 900-1100 tapered ring compressor, 4.110" bore
WHY ARP RING COMPRESSORS?
• True-radius taper sized per bore for minimal ring stress
• 6061-T6 billet, Type 3 hard anodized for long tool life
• Chamfer and O-ring relief to ease skirt entry and align on deck
FAQs
WILL THIS FIT MY 7.3L POWERSTROKE?
Yes—if your cylinders are standard 4.110" bore. For .020" over (4.130"), use ARP 900-1300.
CAN I USE THIS ON OTHER ENGINES?
Yes. It’s sized by bore (4.110"). If your engine uses that bore size, this tool applies.
DO I NEED LUBE?
Light oil on the sleeve and rings helps the piston enter smoothly and protects the anodized surface.
WHAT IF MY CYLINDERS ARE HONE-FINISHED OR OVERBORED?
Match the compressor to your exact finished bore. For larger 6.7L Cummins bores (4.2125"), see ARP 900-2125.
| Brand | ARP (Automotive Racing Products) |
| Part Number | 900-1100 |
| Bore Size | 4.1100" |
| Material / Finish | 6061-T6 billet, Type 3 hard anodized |
| UPC | 672036021580 |
| GTIN | 672036021580 (GTIN-12) |
| Shipping | Calculated at checkout; optional shipping insurance available at checkout |
| Cross Reference | ARP 900-1300 (4.130") • ARP 250-5801 Main Stud Kit (7.3L) • ARP 250-6303 Rod Bolt Kit (7.3L forged rods) • Shop All ARP at CPP Diesel |
| E-Codes | N/A (tool) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
