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![Front differential service kit Front differential service kit](https://cdn11.bigcommerce.com/s-9u0pekimaz/images/stencil/500x659/products/13866/82534/1589143_x800__11993.1628867596.jpg?c=1)
Volkswagen recommends checking your differential fluid every 30k miles as bad fluid can lead to premature wear. This kit includes the fill plug, seal, and 1 liter of LiquiMoly 75w-90 fluid, which meets GL-5 Spec.