Multiquip 21E23403H3 Piston O.S. 0.25

The Multiquip 21E23403H3 Piston O.S. 0.25 is a genuine OEM oversized piston designed for MTX60SD, MTX70SD, MTX80SD, MTX80SF, and MTX60SF rammers. As an OEM-sourced component, it is manufactured to the exact tolerances required by Multiquip, ensuring a proper fit within the cylinder bore of these tamper models. This oversized piston is the correct service replacement when the cylinder has been bored out by 0.25mm to restore proper compression after wear. Sourcing the 21E23403H3 directly from an authorized Multiquip parts distributor like DHS Equipment means you receive the genuine article — no guesswork on sizing or compatibility.

Key Features

• OEM Oversized Tolerance: — Machined to exact 0.25mm oversize specification, matching the rebored cylinder bore for correct compression sealing.
• Direct Service Replacement: — Engineered to drop into a properly bored cylinder on compatible MTX-series rammers without additional machining beyond the required bore job.
• Confirmed Fitment: — Verified for MTX60SD, MTX70SD, MTX80SD, MTX80SF, and MTX60SF rammer models.
• Restored Engine Performance: — A correctly sized oversized piston brings compression back to operating spec, restoring full stroke force and consistent tamping output to the rammer.
• Genuine Multiquip OEM Part: — Sourced directly through the Multiquip parts network, carrying the same quality standard as the original production component.

The piston is the core reciprocating component inside the rammer's engine cylinder. It compresses the air-fuel mixture on the compression stroke and transfers combustion force to the crankshaft, which in turn drives the tamping foot. Over time, cylinder walls and piston skirts wear, reducing compression and causing the engine to lose power and run roughly. When a cylinder is rebored to remove wear damage, a standard-size piston will no longer seal correctly — an oversized piston like the 21E23403H3 O.S. 0.25 is required to restore the correct clearance and bring compression back to specification. Running a rammer with insufficient compression results in hard starting, weak impact force, and accelerated wear on surrounding engine components.

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.