Multiquip 26823402H3 Piston Oversize 0.25

The Multiquip 26823402H3 is a genuine OEM Piston Oversize 0.25 designed for MTX80 and MTX90 series rammers. This oversize piston is engineered to the exact dimensional tolerances required for engine rebuilds where cylinder bore has been honed or bored 0.25mm beyond standard specification. As a genuine Multiquip OEM component, 26823402H3 delivers the precise fit and material integrity needed to restore your rammer engine to proper operating condition. Confirm your bore measurement against this oversize specification before ordering to ensure correct fitment for your MTX80 or MTX90.

Key Features

• OEM Oversize Tolerance: — Cast and machined to exact 0.25mm oversize specification, ensuring correct ring seal and compression in a freshly bored or honed cylinder.
• Direct Rebuild Replacement: — Drops into the cylinder bore after standard 0.25mm oversize honing, requiring no additional machining or shimming beyond the bore prep itself.
• MTX80 and MTX90 Fitment: — Verified for Multiquip MTX80 and MTX90 rammers; always cross-reference your cylinder bore measurement to confirm this oversize grade is correct for your engine.
• Compression Restoration: — A worn or out-of-round cylinder causes lost compression, hard starting, and reduced impact energy; an oversize piston correctly matched to the rebored cylinder restores full stroke power and engine efficiency.
• Fuel System Safety Compliance: — Proper piston-to-wall clearance prevents blow-by, which can contaminate the crankcase oil and lead to accelerated wear across the entire lower end of the engine.

The piston is the reciprocating component at the heart of a rammer's engine, converting the combustion energy of the air-fuel charge into the downward force that drives the machine's impact mechanism. Over time, the cylinder bore can wear oval or develop scoring, requiring the bore to be machined oversize and a matching oversize piston installed to restore a proper seal and compression ratio. Choosing the correct oversize grade — in this case 0.25mm — is critical; an incorrect piston will result in excessive clearance or an inability to fit, both of which prevent a successful engine rebuild on the MTX80 or MTX90.

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.