Note shell stock can vary due to availability, either UK made Glacier ,or USA made Clevite. The best quality bearing shells available on the market, made by Clevite in the USA (which is owned by Mahle who also took over Vandervell the bearing shell company).
Tri-metal construction, steel backed with Bronze VP3P3 layer and a lead/tin copper plate surface for wearability and corrosion protection, and made to high precision (unlike some shells on the market that are not the same thickness all round !)
Before fitting bearing shells, always check conrod housing is not oval , distorted or has any surface damage ,also make sure crankshaft journals are ground to correct size and tolerances and surface finish , if fitting to existing used journals, please check sizes and surface for any damage or marks that may damage the bearing shells; if you need information on conrod housing sizes,and crankshaft journal sizes please contact us.
DO NOT FIT UNIT 350 500