Description
Overview:
The Big End Bearing R4 (26.00 mm) Under Size is a genuine M.A.G component for the M.A.G 1021 SRL engine, OEM No. 0529 054. It is a precision-engineered bearing that supports the connecting rod on the crankpin, maintaining correct oil clearance and smooth rotation under load. Built from durable bearing-grade materials for strength and wear resistance, it is intended for engines where the crankpin has been reground to an undersize. The stated 26.00 mm dimension (approx. 1.024 in) ensures accurate fitment and dependable performance when installed to specification. Supplied as unused old stock, it may show minor tarnish or storage marks, but it remains to original spec and suitable for restoring reliability in M.A.G 1021 SRL engines used in older machinery.
Key Features:
- Genuine M.A.G part (OEM 0529 054) for assured compatibility and fit
- 26.00 mm undersize specification (approx. 1.024 in) for reground crankpins
- Precision tolerances to maintain correct oil film and smooth running
- Durable construction for longevity under continuous operation
- Supports stable connecting rod alignment to reduce vibration and wear
- Suitable for vintage engine restoration and routine overhaul work
- Unused old stock: original spec part with possible light storage tarnish only
- Designed for straightforward replacement when following workshop procedures
Typical Applications:
Used during engine rebuilds and maintenance of the M.A.G 1021 SRL to restore correct big-end clearances after crankpin regrind. Suitable for vintage machinery engines where reliable rod-to-crank support is needed to reduce friction, protect journals, and maintain oil pressure and smooth operation over long service intervals.
Also known as:
Connecting rod bearing, big-end bearing shells, con-rod bearing, crankpin bearing, rod journal bearing, engine big-end shells for M.A.G engines.
Fits Models:
M.A.G 1021 SRL
Product Specifications
| L&S Part No. | 0529 054 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | M.A.G |
| Unit of Sale | 1 |
| Applications | M.A.G 1021 SRL |
| Machine Type | Engines |
| Fits Models | M.A.G 1021 SRL |
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