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- Scooter 50-850cc
- Royal Alloy Front Engine Mount Bushing for GP, GT, TG, JPS 125–350 cc
Genuine Royal Alloy spacer sleeve for the front engine mounting of GP, GT, JPS and TG models. The metal bush is part of the engine mounting system and serves as an internal spacer and guide sleeve within the corresponding suspension assembly.
With dimensions of 12 x 18 x 207 mm, the bush is designed for the intended installation position. It provides a defined connection within the engine mounting and supports the correct positioning of the components involved.
On Royal Alloy models, the engine is connected to the vehicle frame via a corresponding mounting system. Within this assembly, various shafts, bushes and bearings provide guidance and positioning for the engine mounting.
The front spacer sleeve forms a separate component within this assembly. Its cylindrical outer surface serves as a contact and guide surface within the designated mounting point. The corresponding fastening or pivot element can pass through the central bore.
The length of the sleeve determines the distance between the corresponding contact points within the assembly. This helps to keep the components involved in their intended positions.
The bush itself is a rigid metal component. It does not provide an elastic damping function. Within the engine mounting, this function may be provided by separate bearing or rubber elements.
The product images show a long, silver-grey metal sleeve with a constant outer diameter. The surface has a metallic finish with a uniform longitudinal structure.
The bush has a continuous central bore. Annular end faces are visible at both ends. The outer edges are lightly machined, with no pronounced sharp edges visible.
The simple cylindrical geometry provides defined guidance within the engine mounting. This component has no additional flanges, lateral mounting holes or threads.
The bush is supplied as an individual replacement part and is intended for use with the existing or separately available components of the engine mounting system.
In Royal Alloy spare parts catalogues, the front engine mounting bush is listed as “Front End Shaft Sleeve, Suspension”.
The specified dimensions are:
These dimensions are particularly important for identifying the correct replacement part. Different spacer sleeves are used within the Royal Alloy engine mounting system and differ, among other things, in their length.
This front version with a length of 207 mm must therefore not be confused with the other engine mounting bush measuring 12 x 18 x 177 mm.
The bush carries Royal Alloy original part number 0306030004-02-001. It is listed in the corresponding spare parts diagrams as a component of the engine mounting system.
In addition to the spacer sleeve, this assembly uses other components such as engine mounts, suspension shafts, bearings and fastening elements.
The bush can be replaced individually during repairs. This means that the complete engine mounting assembly does not need to be replaced if only the spacer sleeve is damaged or worn.
The spacer sleeve is used on various Royal Alloy models from 125 to 350 cc. Exact compatibility should be checked using the original part number and the vehicle-specific spare parts diagram.
The engine mounting is subjected to various mechanical loads during operation. The bushes used within it can be affected by repeated stress, corrosion or damaged adjacent components.
When the engine mounting is disassembled, the spacer sleeve should therefore be inspected for visible damage. Particular attention should be paid to the condition of the end faces, the cylindrical outer surface and the continuous bore.
Pronounced scoring, deformation, corrosion damage or a damaged bore may make replacement necessary.
Before installation, the associated bearings, shafts and mounting points should also be inspected. Damaged or worn components can impair the function of the entire engine mounting system.
Installation must be carried out according to the intended arrangement of the Royal Alloy engine mounting. The vehicle-specific workshop specifications and the prescribed tightening torques for the fastening elements must be observed.
The genuine Royal Alloy spacer sleeve 0306030004-02-001 allows targeted repair of the front engine mounting. Its dimensions of 12 x 18 x 207 mm provide clear identification of the component and help restore the intended spacing within the engine mounting system.
