Multiquip 2682340203 Piston O.S. 0.25MM

The Multiquip 2682340203 is a genuine OEM Piston O.S. 0.25MM designed for MT-74F, MT-74FA, MT-84F, and MT-84FA rammers. This oversize piston is machined to the exact 0.25MM oversize specification required during engine rebuilds where the cylinder bore has been honed or bored out to restore proper clearances. As a genuine Multiquip OEM component, it delivers the same dimensional accuracy and material quality as the original part, ensuring a correct fit within the engine block. Confirm your model code and bore size before ordering to make sure this 0.25MM oversize grade is the right spec for your application.

Key Features

• OEM Oversize Specification: — Machined to the precise 0.25MM oversize tolerance required for bored or honed cylinders — not a standard piston, and not interchangeable with nominal-bore applications.
• Genuine Multiquip OEM Component: — Sourced directly from Multiquip, carrying the same dimensional and metallurgical standards as the part originally installed at the factory.
• Correct Rebuild Fit: — Sized to seat properly in a cylinder that has been bored to 0.25MM over standard, restoring correct compression and ring seal without additional machining.
• Rammer Family Fitment: — Compatible with MT-74F, MT-74FA, MT-84F, and MT-84FA rammers, covering both standard and FA variants in the MT-74 and MT-84 series.
• Compression Integrity: — A correctly sized oversize piston restores the combustion seal needed for the rammer engine to develop full power stroke force; an incorrect or worn piston causes misfires, loss of impact energy, and hard starting.

A piston is the reciprocating component inside the engine cylinder that transfers combustion pressure into mechanical motion — in a rammer, that motion drives the tamping shoe with each impact stroke. Over time or after a cylinder rebore, the original standard-size piston no longer maintains adequate clearance and ring seal. An oversize piston like the 2682340203 is installed during a rebuild to restore that fit, bringing compression back to specification and allowing the engine to deliver consistent impact force. Using the wrong oversize grade will result in either excessive clearance, causing blow-by and power loss, or insufficient clearance, risking seizure.

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.