Multiquip 2522350317 Piston Ring Set 0.50 O.S.

The Multiquip 2522350317 is a genuine OEM Piston Ring Set 0.50 O.S. designed for MT74FAF, MT-84FA, MTX80, and MTX90 series rammers. As a direct OEM replacement, this oversize ring set is engineered to the exact specifications required for engines that have been bored 0.50mm over standard, restoring proper compression and oil control in rebuilt or re-bored rammer engines. Sourced directly through Multiquip's authorized parts network, the part ensures you're installing a part that meets the same standards as the original equipment.

Key Features

• OEM Compression Tolerancing — Manufactured to exact dimensional specs for a 0.50mm oversize bore, maintaining correct ring-to-cylinder wall clearance for proper sealing.
• Drop-In Oversize Fit — Matches the bore size produced by a standard 0.50 O.S. engine re-bore, so no additional machining or fitment adjustment is needed beyond the rebuild itself.
• Confirmed Fitment — Compatible with MT74FAF, MT-84FA, MTX80, and MTX90 Multiquip rammers; verify your model before ordering to ensure correct oversize selection.
• Compression Restoration — Worn or broken piston rings allow combustion gases to bypass the piston, causing loss of power and hard starting; a fresh ring set restores engine compression and rammer strike force.
• Engine Longevity After Rebuild — Installing the correct oversize ring set during a re-bore is critical to extending engine life; using undersized or incorrectly specified rings will accelerate wear and compromise the rebuild.

Piston rings form a dynamic seal between the piston and the cylinder wall, serving two essential functions: containing combustion pressure to drive the piston downward and controlling oil to prevent it from entering the combustion chamber. In a rammer engine, these rings are under constant stress from the high-cycle, high-impact operating conditions the machine demands. When rings wear, crack, or lose tension, compression drops, power output falls, oil consumption increases, and starting becomes difficult. This 0.50 O.S. set is sized for use after a cylinder has been bored 0.50mm over the original diameter, making it the correct choice for an engine rebuild rather than a standard-bore replacement.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.