Halogen bulb H21W HY21W BAY9S – 21W

The H21W / HY21W (BAY9S) bulb is used for side and rear turn signals on certain European vehicles. It operates at 12V/21W with a miniature BAY9S base. The HY21W is the orange version for turn signals with clear optics. It is found on certain BMW, Audi and VW models. AGM Vision offers this reference in stock, with compatibility sheets.

Access the light or the lamp, then remove the bulb holder. The H21W / HY21W (BAY9S) bulb is removed by pushing and turning (bayonet) or by simple pulling out (festoon). Insert the new bulb. The operation takes less than 5 minutes. AGM Vision provides vehicle compatibility sheets.

The H21W / HY21W (BAY9S) bulb generally exists in a standard version for an identical replacement. Depending on the reference, long-life versions may be available. Standard versions are ECE approved. AGM Vision details the versions on each product sheet.

The H21W / HY21W (BAY9S) bulb lasts on average 800 to 1500 hours, depending on use. The lifespan depends on vibrations and the number of switching-on cycles. AGM Vision bulbs are tested for their durability.

The H21W / HY21W (BAY9S) is a relatively uncommon reference in a standard auto parts store. AGM Vision stocks it in France, with shipping within 24/48h.

The H21W / HY21W (BAY9S) bulbs with ECE marking are approved for road use. Check the E marking on the packaging. AGM Vision indicates the approval on each product sheet in order to guarantee a compliant purchase.