Description
Overview:
These Big End Shells Undersize 020 are genuine Villiers bearing inserts for the connecting rod big-end on Villiers MK10 engines. Supplied as a matched pair of half-shells, they feature a steel-backed, bearing-alloy lining to provide a consistent, durable running surface on a reground crankpin. The 0.020 in (0.51 mm) undersize specification is intended for use after the crankshaft journal has been ground to the corresponding dimension, restoring correct oil clearance and maintaining reliable lubrication. Fitted correctly, they help eliminate big-end knock, reduce friction and wear, and extend engine life. Marked with MPN EM554/020, they are an exact-fit, OEM-grade solution for the MK10, ideal for routine rebuilds or as part of a corrective repair on horticultural and light industrial equipment powered by Villiers engines.
Key Features:
- Genuine Villiers part for assured compatibility and fit on MK10 engines
- 0.020 in (0.51 mm) undersize to suit a reground crankpin and restore oil clearance
- Steel-backed, bearing-alloy construction for strength and long service life
- Supplied as a matched pair of half-shells for one connecting rod big-end
- Helps cure big-end knock and maintain stable oil pressure
- Supports smooth crankshaft rotation and reduced friction under load
- Accurate bearing geometry for dependable running and reduced wear
- OEM reference EM554/020 for straightforward identification
- Practical choice during engine rebuilds, overhauls, or preventive maintenance
- Straightforward to fit by competent users with standard workshop tools
Typical Applications:
Used when rebuilding or servicing Villiers MK10 engines in lawn and garden machinery, compact generators, pumps, rotavators, and light construction plant. Ideal after crankshaft regrind to 0.020 in (0.51 mm) undersize, restoring correct clearance and protecting the crankpin and connecting rod during everyday use.
Also known as:
Conrod shells, connecting-rod big-end shells, bearing inserts, big-end bearings, rod journal shells, 0.020 in (0.51 mm) undersize shells, BE shells, crankpin shells.
Fits Models:
MK10
Alternate Part Numbers:
1268, 8729
Product Specifications
| L&S Part No. | EM554/020 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Villiers |
| OEM No. | EM554/020 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Villiers |
| Key Features | - Genuine Villiers part for MK10 engine compatibility - 0.020 in undersize for reground crankpin fit - Steel-backed, bearing-alloy for durability - Supplied as matched pair for one big-end - OEM reference EM554/020 for easy identification |
| Fits Models | MK10 |

