OE part number B04 is a Air supply idle control valve compatible with AUDI, BMW and other makes. Available from 2 brands, priced from £26.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
Air supply idle control valve OE B04 prices range from £26.99 to £71.99, with 2 brands offering compatible parts.
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Related cross-references
Cross-reference numbers associated with B04 — including both OEM part numbers and aftermarket alternatives. Each entry links to its own compatibility and pricing page.
OE B04 fits vehicles from AUDI, BMW, CITROËN and other compatible models listed below.
What part type is B04?
OE B04 is an original equipment reference for a Air supply idle control valve. It identifies the exact part specification used by the vehicle manufacturer.
How much does Air supply idle control valve B04 cost?
Replacement parts for OE B04 cost between £26.99 and £71.99, depending on brand and specification.
Which brands make Air supply idle control valve B04?
MEAT & DORIA, HELLA all offer compatible replacements for OE B04.
Is B04 original equipment or aftermarket?
OE B04 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 B04?
OE (Original Equipment) number B04 is a manufacturer's reference code for Air supply idle control valve used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 2 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 B04.
