Will these fit my valve stems without modification?

Valve cap fitment varies by stem diameter. Confirm your valve stem size before ordering — these are sized as standard automotive caps but test-fit them first to ensure proper seating.

Do these come with any mounting hardware or adhesive?

These are direct-fit caps that twist onto your existing valve stems — no additional hardware or tools required. They install in seconds.

Will the black finish scratch or fade with engine bay heat?

Black finish is durable under normal engine bay conditions, but extreme heat or aggressive cleaning can wear it over time. Periodic light cleaning keeps them looking sharp without damage.