Sourcing valve cover gaskets from China

UK duty on metal-composite valve cover gaskets

Read from the UK Trade Tariff on 1 October 2026, valve cover gaskets made from metal sheeting combined with other material fall within 8484 10 00 90. Heading 8484 also covers layered metal gaskets, mixed-composition gasket sets and mechanical seals. The table describes material variants within the same tariff line.

The supplied tariff record lists 0% duty for goods from China under this line, with no anti-dumping or countervailing measure, suspension or attached import control. Import VAT is separate from customs duty. A tariff line without an attached control does not override the asbestos prohibition.

Confirm the commodity code using the material breakdown and how the goods are supplied. A separately supplied rubber-only gasket needs a different classification, while a mixed-material gasket set needs its own review. For related products within the wider heading, see metal-composite exhaust manifold gaskets.

Specify the engine fit and composite construction

Give the factory the engine designation, valve cover drawing, reference part number and an approved sample. Specify the metal core, facing material, coating, finished thickness, bolt-hole positions and sealing profile. Identify whether plug-well seals and bolt grommets are included or supplied separately. Agree compatibility with engine oil and the intended operating conditions.

Vehicle parts containing asbestos cannot be placed on the market. Ask for an asbestos-free material declaration and laboratory evidence covering the actual fibre or facing material used. Treat these as purchasing checks rather than assuming that a declaration alone proves the material is suitable. Agree the testing brief before production.

Worked duty example

Illustrative example, not a quote: Illustrative order: 1,500 metal-composite valve cover gaskets under 8484 10 00 90, invoiced at £30,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £31,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £31,500, so it is £6,300. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Fit: compare the outline, bolt holes, corners and sealing profile with the approved drawing and trial-fit on the intended cover and mating surface.

Construction: measure finished thickness and check the specified core and facing materials against the sample and material records.

Condition: check for exposed burrs, damaged coatings, loose facing material, delamination and distortion caused by packing or handling.

Identification: match carton labels, part references and batch records to the order; check that separately packed seals and grommets are present. Use the agreed inspection procedure when accepting the delivery.

What goes wrong

A gasket can resemble the sample yet have misplaced bolt holes, an unsuitable corner profile or the wrong compressed thickness. These differences can prevent the cover seating correctly or leave an oil leak. A changed facing material can also respond differently to oil and heat, so agree that material substitutions need your approval.

Bent metal cores, lifted facing material and scratched coatings can arrive hidden inside tightly stacked packs. Check unpacked samples before releasing stock for use. If a fit problem appears, compare the gasket with the cover groove, mating surface and approved sample before accepting the supplier's proposed change.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For machinery and equipment, see machinery imports.