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Turbo Parts Design, Development & Manufacture

Where demand requires, at Melett we invest in our own tooling to produce the highest quality replacement turbo parts. This ensures that the components are available to meet demand and that Melett is in full control of the quality of the tooling, at all times. Many cast components have Melett tooling numbers (e.g. M9) cast into the product to help you identify our turbo parts.

Knowing what the market requires now and in the future has been key to Melett's success. Regular contact with our customers has allowed Melett to stay on top of the current and future market requirements. New turbo parts are fast tracked through our product development programme to ensure we continue to match availability with demand.

Turbo Component Design and Tolerancing

Understanding the function of a turbo part is the first step in component design. Utilising the latest in Computer Aided Design (CAD) technology, our Engineers produce detailed design drawings and calculate stacked and geometric tolerances. Material specifications, surface hardness and surface finish are also closely analysed to ensure the final components perform exactly to OEM specification providing correct oil clearance and assembled tolerance.

All Melett products undergo rigorous inspection procedures before entering our stock and all turbine and compressor wheels are dynamically balanced to the correct balancing specification.

Controlling High Precision Turbo Manufacture

Melett insists on quality control procedures similar to those utilised in OEM automotive component manufacturing. Production Part Approval Process (PPAP) documentation is supplied with deliveries giving accurate measurements of critical dimensions of control samples from each batch. Internally, each stock batch is closely controlled giving full traceability of each part number. Every batch of repair kits produced has a QC batch number allowing Melett to control all stock movements into each kit.

Oversize Journal Bearings and Piston Rings

To further support our reconditioning customers, Melett offers a comprehensive range of oversize journal bearings and piston rings.

Journal bearings are available in different variations of oversize OD for recovering the bearing housing bore and undersize ID to allow grinding of the shaft.

Piston rings are available in different variations of OD to allow recovery of the piston ring bore in the bearing housing and increased width to allow recovery of the ring groove on the shaft and wheel. Melett ensures that all oversize OD piston rings have increased radial thickness to maintain the engagement depth in the shaft groove.

For further details on our range of oversized parts, ask our dedicated sales team for a copy of the Melett Workshop Reference Manual.

360º Thrust Kits and Upgrades

Melett offers a range of 360º thrust kits and step gap piston rings for Garrett T2/25, T3/04B and MHI TD04 & TD05 (inc. Evolution) turbos. These are available as individual items or in a range of kits to fit both dynamic and carbon seal applications. The upgrade thrust kits increase the oil flow to the centre of the bearing improving both lubrication and cooling. A larger thrust face also allows higher thrust loads associated with increased boost pressure - this is essential on extreme applications.

Please contact the Melett sales team for further information and turbo parts pricing.

  • Check out Melett Newsletter 12

    Click here to view
  • Are you visiting Autopromotec Bologna?

    Padiglione 21, Stand B 13: 24th May 28th May 2017 Melett will be showcasing our extended range of precision engineered turbochargers along with our extensive range of turbocharger parts. To find out how we can support you and your customers, visit our multilingual team at Padiglione 21, Stand B 13..
    Click here to view
  • Check out Melett Newsletter 11

    Find out the decision behind Melett Turbochargers. Check out why Melett CHRA's are better than ever and all the latest product developments including Melett Electronic Actuator Repair Kit, Core Assemblies and Nozzle Ring Cages. Melett Lean Initiatives - Improving efficiencies, whilst reducing waste and cost. In addition to, the latest Melett News and updates and industry and turbocharger news.
    Click here to view
  • Why have we changed our core boxes?

    2016 has seen a strong focus at Melett to improve efficiencies and reduce waste. As a result we have introduced a number of Lean manufacturing initiatives in order to operate more efficiently throughout the business.
    Click here to view
  • Melett Turbochargers - the premium brand alternative

    We are delighted to introduce Melett Turbochargers, our new range of precision engineered turbos. We can now offer our customers the complete product portfolio, including everything from individual piece parts right through to the complete unit.
    Click here to view


​As a Trade Supplier you could have full access to the detailed turbo buildsheet database, turbo catalogues, calibration information and new product releases available on our website.

For more information please contact us.

If you are an existing customer, you should have received your login details by email, if not, please contact us for more information.