Description
Overview:
This Piston Ring Set is a non-genuine replacement engineered to restore sealing and performance in JCB compact and mid-size plant. Manufactured from high-grade cast iron/steel for durability, the rings provide a tight seal between piston and bore, helping to maintain compression, transfer heat from the piston to the cylinder wall, and regulate oil consumption. Supplied to replace OEM No. 02/634136, it is suitable for a wide range of JCB machines including mini excavators such as the 802 Super and 8030 ZTS. It is a practical choice for routine overhauls or corrective repairs in workshops and on-site, helping keep engines running reliably in construction, landscaping, and plant hire applications where uptime matters.
Key Features:
- Non-genuine replacement for OEM No. 02/634136, offering a cost-effective repair option
- Precision-machined ring faces for dependable compression sealing and oil control
- Robust cast iron/steel construction for wear resistance in high-temperature, high-load engines
- Helps reduce blow-by, oil consumption, and exhaust smoke when installed with correct clearances
- Designed for compatibility with multiple JCB models to simplify parts stocking
- Suitable for scheduled maintenance and full or partial engine rebuilds
- Supports efficient heat transfer from piston to cylinder for stable running
- Fits standard pistons and bores where 02/634136 is specified (check engine spec before fitting)
- Straightforward installation for competent technicians, minimising downtime
- Reliable choice for workshops, mobile service engineers, and fleet maintenance
Typical Applications:
Used during engine overhauls and repairs on JCB mini excavators, backhoe loaders, skid steers, telehandlers, and teletruks. Typical tasks include restoring compression after wear, addressing oil burning and loss of power, improving cold starts, and stabilising emissions. Suitable for routine service intervals in demanding site conditions and for returning hire fleet machines to dependable operation.
Also known as:
JCB engine piston ring kit, ring pack, compression and oil control ring set, piston ring replacement set for JCB engines, replacement for JCB 02/634136 ring set, mini excavator piston rings.
Fits Models:
48Z-1 T3, 48Z-1 T4, 48Z1T3, 48Z1T4, 51R-1 T3, 51R-1 T4, 51R1T3, 51R1T4, 55Z-1 T3, 55Z1T3, 57C-1 T3, 57C1T3, 65R-1, 65R1, 802 Super, 802.7 SUPER, 8025 ZTS, 8025 ZTS ORFS, 8025ZTS, 8026 CTS, 8026CTS, 8027Z, 803 MAGNUM, 803 PLUS, 803 SUPER, 8030 ZTS, 8030 ZTS ORFS, 8030ZTS, 8032Z, 8035 ZTS, 8035 ZTS ORFS, 8035ZTS, 803PLUS, 804 SUPER, 8040 ZTS, 8040ZTS, 8045 ZTS, 8045ZTS, 8050 RTS, 8050 ZTS, 8050RTS, 8050ZTS, 8052, 8055 ZTS, 8055ZTS
Product Specifications
| L&S Part No. | 831 598 |
|---|---|
| Part Type | Non Genuine Part |
| Unit of Sale | 1 |
| Applications | 48Z-1 T3, 48Z-1 T4, 48Z1T3, 48Z1T4, 51R-1 T3, 51R-1 T4, 51R1T3, 51R1T4, 55Z-1 T3, 55Z1T3, 57C-1 T3, 57C1T3, 65R-1, 65R1, 802 Super, 802.7 SUPER, 8025 ZTS, 8025 ZTS ORFS, 8025ZTS, 8026 CTS, 8026CTS, 8027Z, 803 MAGNUM, 803 PLUS, 803 SUPER, 8030 ZTS, 8030 ZTS ORFS, 8030ZTS, 8032Z, 8035 ZTS, 8035 ZTS ORFS, 8035ZTS, 803PLUS, 804 SUPER, 8040 ZTS, 8040ZTS, 8045 ZTS, 8045ZTS, 8050 RTS, 8050 ZTS, 8050RTS, 8050ZTS, 8052, 8055 ZTS, 8055ZTS |
| Machine Type | Excavators, Backhoe Loader, Skidsteers, Telehandlers |
| Fits Models | 55Z-1 T3 | 57C-1 T3 | 65R-1 | 8025 ZTS | 8027Z | 8030 ZTS | 8032Z | 8035 ZTS | 8040 ZTS | 8045 ZTS | 8050 RTS | 8050 ZTS | 8052 | 8055 ZTS | 48Z-1 T3 | 48Z-1 T4 | 51R-1 T3 | 51R-1 T4 | 802 Super | 802.7 SUPER | 803 SUPER | 803 MAGNUM | 803 PLUS | 8030 ZTS ORFS | 8035 ZTS ORFS | 804 SUPER | 8025 ZTS ORFS | 8026 CTS |
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