OE part number AT11421 is a Nox catalytic converter nox sensor used by BMW. We have 7 compatible replacement parts from AS-PL, TOPRAN, FEBI BILSTEIN, METZGER AUTOTEILE, ABAKUS.
Nox catalytic converter nox sensor OE AT11421 prices range from £156.99 to £395.99, with 6 brands offering compatible parts.
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Related cross-references
Cross-reference numbers associated with AT11421 — including both OEM part numbers and aftermarket alternatives. Each entry links to its own compatibility and pricing page.
OE AT11421 fits vehicles from BMW and other compatible models listed below.
What part type is AT11421?
OE AT11421 is an original equipment reference for a Nox catalytic converter nox sensor. It identifies the exact part specification used by the vehicle manufacturer.
How much does Nox catalytic converter nox sensor AT11421 cost?
Replacement parts for OE AT11421 cost between £156.99 and £395.99, depending on brand and specification.
Which brands make Nox catalytic converter nox sensor AT11421?
AS-PL, TOPRAN, FEBI BILSTEIN, METZGER AUTOTEILE, ABAKUS all offer compatible replacements for OE AT11421.
Is AT11421 original equipment or aftermarket?
OE AT11421 is an original equipment reference assigned by the vehicle manufacturer. The parts listed below are quality-matched aftermarket and OEM-equivalent replacements that meet the same specification.
What is OE number AT11421?
OE (Original Equipment) number AT11421 is a manufacturer's reference code for Nox catalytic converter nox sensor used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 6 compatible aftermarket brands that match the same specification — often at a lower price than the original. All parts listed above are verified to match OE AT11421.
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