The Multiquip 71429522560 Ring Set OS=0.25 is a genuine OEM piston ring set designed for L48N6 and MTX-85DY engine applications. This is the correct 0.25 mm oversize specification, sourced directly from Multiquip to ensure an accurate fit in rebuilt or re-bored cylinders. If you are rebuilding the Yanmar L48N6 engine found in the MTX-85DY rammer, this ring set matches the exact oversize tolerance required for a proper seal and full compression recovery. Ordering the verified OEM part number 71429522560 eliminates the guesswork that comes with sourcing generic oversize rings for small-displacement diesel engines.
Key Features
- Oversize-Specific OEM Tolerancing — Engineered to the 0.25 mm oversize specification, delivering the correct ring-to-wall clearance needed to restore compression in a re-bored Yanmar L48N6 cylinder.
- Direct Engine Rebuild Fit — Sized and profiled to drop into the L48N6 piston grooves without secondary machining, keeping your engine rebuild on track.
- Confirmed Fitment for MTX-85DY and L48N6 — Verified for the MTX-85DY Yanmar-powered rammer and its L48N6 engine assembly, so you are ordering with confidence.
- Compression and Oil Control Restored — A fresh ring set returns cylinder sealing to spec, recovering lost power stroke pressure and preventing oil blow-by that causes excessive smoke and rapid wear.
- Genuine Multiquip OEM Quality — Manufactured to the same material grade and ring tension as the original components, supporting a durable, long-running rebuild rather than a short-term fix.
Piston rings form the critical seal between the piston and cylinder wall in a four-stroke engine, controlling compression pressure during the power stroke and limiting oil from entering the combustion chamber. When rings wear, become stuck, or lose tension, the engine loses power, burns oil, and produces excessive exhaust smoke — all signs that a ring replacement is overdue. In a rebuild situation where the cylinder has been bored oversize, installing the correct oversize ring set like this 0.25 mm specification is essential; using standard-size rings in a bored cylinder will result in excessive gap, poor sealing, and a failed rebuild from the start.
Part Details
| Part Number | 71429522560 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Ring Set OS=0.25 |
Compatibility & Fitment
| Name | Model |
|---|---|
| L48N6 | L48N6 |
| MTX-85DY | MTX-85DY |
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.
