# Main bearings STD Perkins 1106 / 1206 U5MB0020 – new

> Perkins U5MB0020 STD main bearings for 1106/1206 engines – durable, wear-resistant, ensuring crankshaft stability and reliable operation.

- Category: [crankshafts and bearings](https://wibako.com/shop/diesel-engines-parts/crankshafts-and-bearings.md)
- Manufacturer: Perkins
- Part number: U5MB0020
- Stock number: 53094
- Condition: new
- Price: 139.48 EUR gross (113.40 EUR net)
- Availability: in stock

Main bearings STD Perkins 1106 / 1206 – new. Fits: Engine Caterpillar C6.6, Crawler dozer Caterpillar D6NLGP, Crankshaft for engine Caterpillar C6.6.

## Specification

- name: Main bearings STD
- mark: Perkins
- type: 1106 / 1206
- part number: U5MB0020
- condition: new
- crankshaft diameter: STD size
- engine type: 1106 / 1206
- material: bearing alloy

## Description

Main bearing shells in standard size (STD) for Perkins 1106 and 1206 and Caterpillar C6.6 engines, part number U5MB0020 (also 276-7388, 360-1978, 3111M021, 3111M031, T417566), weight 0.76 kg. Main bearing shells form the plain bearing for the crankshaft in the engine block. The photo shows two halves with oil holes and a lubrication groove. New part. It fits the Caterpillar C6.6 engine and the Caterpillar D6N LGP dozer. Before ordering, check the grinding size of the crankshaft journals and compare the part number.

Fits: Engine Caterpillar C6.6, Crawler dozer Caterpillar D6NLGP, Crankshaft for engine Caterpillar C6.6.

Part number: U5MB0020. Reference and alternative numbers: 276-7388, C6.6 / C7 / C7.1, 3111M021, 360-1978, T417566, 1106, 3111M031. To be sure the part fits, compare the number on the nameplate or in the catalogue – or send us an enquiry with the part number or the machine (engine) serial number and we will confirm the fit.

Weight: 0.76 kg. Shipping: new parts ordered by 10:00 (CET) are dispatched the same working day, other orders the next working day.

We also carry out [diesel engine overhauls](https://wibako.com/services/overhauls-of-combustion-engines).

## Fits (machines and engines)

- Engine Caterpillar C6.6
- Crawler dozer Caterpillar D6NLGP
- Crankshaft for engine Caterpillar C6.6 276-7387

## Reference numbers

U5MB0020, 1106 / 1206, 276-7388, C6.6 / C7 / C7.1, 3111M021, 360-1978, T417566, 1106, 3111M031

## Guides and case studies

- [Caterpillar C6.6 Engine Overhaul](https://wibako.com/about-us/news/182-caterpillar-c6-6-engine-overhaul.md)

![Photo: Main bearings STD Perkins 1106 / 1206 U5MB0020](https://wibako.com/images/2142125_1757959075075_1000x1000.webp)

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Source: https://wibako.com/shop/diesel-engines-parts/crankshafts-and-bearings/37411X53094-main-bearings-std-perkins-1106-1206-u5mb0020
Contact: +48338704200, biuro@wibako.pl