The Multiquip 13102ZJ1840 is a genuine OEM Piston Ring Set (OS 0.25) designed for GA9.7HE gasoline-powered generators and AR13H, AR13HA/HAR, and AR13HC asphalt ride-on rollers. As a direct Multiquip OEM component, it meets the original engineering specifications for the engine fitted to these machines, ensuring a proper seal and correct dimensional fit within the cylinder bore. Verify your model code against the fitment list — 13102ZJ1840 is the correct ring set for the 0.25mm oversize bore specification on compatible units.
Key Features
- OEM-Specified Ring Geometry — Manufactured to the exact oversize (OS 0.25) bore dimensions required by the engine, ensuring correct radial tension and end-gap clearance on installation.
- Drop-In Engine Rebuild Fit — Designed to seat directly into the oversize cylinder bore without additional machining, aligning with OEM piston and cylinder tolerances.
- Confirmed Fitment — Compatible with GA9.7HE generators and AR13H, AR13HA/HAR, and AR13HC asphalt ride-on rollers; always confirm your oversize bore spec before ordering.
- Restored Compression and Oil Control — Fresh rings restore cylinder sealing, bringing compression back to operating spec and preventing oil from entering the combustion chamber.
- Fuel Efficiency Protection — Worn rings allow blow-by that increases fuel consumption and exhaust smoke; replacing with the correct OEM set keeps the engine running at its intended efficiency.
Piston rings form the dynamic seal between the piston and the cylinder wall, serving three critical roles: containing combustion pressure to generate power, controlling oil film distribution on the cylinder bore, and transferring heat away from the piston into the cylinder wall. When rings wear, lose tension, or break, the engine loses compression, burns oil, and produces excessive exhaust smoke — all signs that ring replacement is needed. The OS 0.25 designation on 13102ZJ1840 indicates this set is sized for a cylinder bore that has been honed 0.25mm oversize, which is a standard step taken during engine rebuilds to restore a true, round bore surface after wear.
For fitment questions or to confirm this is the correct oversize specification for your engine, contact the DHS Equipment team before ordering.
Part Details
| Part Number | 13102ZJ1840 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Ring Set (OS 0.25) |
Compatibility & Fitment
| Name | Model |
|---|---|
| Gasoline Powered Generators | GA9.7HE |
| Rollers | AR13H |
| Rollers | AR13HA/HAR |
| Rollers | AR13HC |
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.
