Description
Overview:
The Big End Bearing R4 (33.90 mm) Undersized for the Mag 2055 engine is a genuine M.A.G component designed to support the crankshaft at the connecting rod big end. Supplied as precision bearing shells, it provides a durable, low-friction running surface that helps maintain correct oil film and crankpin support under load. Typical construction is a steel-backed, anti-friction bearing layer suited to petrol small engines used in construction and garden machinery. This R4 undersize is intended for use where the crankpin has been ground to the matching undersize, helping restore correct running clearance and oil pressure. Compatible with the Mag 2055 SRL and 2055SRL, it is suitable for maintenance, overhaul, or restoration of engines where genuine parts and dimensional accuracy are important. As unused old stock, light tarnish or storage marks may be present without affecting serviceability.
Key Features:
- Genuine M.A.G part for assured fit and compatibility with Mag 2055-series engines
- R4 undersized bearing at 33.90 mm for journals ground to the matching undersize
- Helps restore correct oil clearance, oil pressure, and smooth crankshaft rotation
- Steel-backed, anti-friction bearing surface for dependable wear resistance
- Manufactured to tight tolerances to support reliable engine performance
- Suitable for engine rebuilds, repairs, and preventative maintenance
- Aids in reducing knock, vibration, and premature wear when fitted to spec
- Unused old stock: may show cosmetic ageing but remains functionally sound
- Designed for straightforward installation by competent mechanics with standard tools
- Supports long service life when used with clean oil and correct torque settings
Typical Applications:
Used during engine rebuilds or repairs on Mag 2055 engines powering construction and garden machinery, such as compactors, generators, pumps, and mowers. Ideal when the crankpin has been reground and an undersize bearing is required to re-establish proper running clearance and dependable lubrication.
Also known as:
Big-end shells, connecting rod bearing, con-rod bearing, crankpin bearing, rod bearing shells, engine big end bearing set, lower end bearing for connecting rod.
Fits Models:
2055 SRL, 2055SRL
Product Specifications
| L&S Part No. | 0529 050 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | M.A.G |
| Unit of Sale | 1 |
| Applications | 2055 SRL, 2055SRL |
| Machine Type | Engines |
| Fits Models | 2055 SRL |
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