OE part number 1731ER is a Catalyst converter compatible with AUDI, CITROËN and other makes. Available from 1 brands, priced from £384.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
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Related cross-references
Cross-reference numbers associated with 1731ER — including both OEM part numbers and aftermarket alternatives. Each entry links to its own compatibility and pricing page.
OE 1731ER fits vehicles from AUDI, CITROËN, FIAT and other compatible models listed below.
What part type is 1731ER?
OE 1731ER is an original equipment reference for a Catalyst converter. It identifies the exact part specification used by the vehicle manufacturer.
How much does Catalyst converter 1731ER cost?
Replacement parts for OE 1731ER cost £384.99.
Which brands make Catalyst converter 1731ER?
WALKER all offer compatible replacements for OE 1731ER.
Is 1731ER original equipment or aftermarket?
OE 1731ER 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 1731ER?
OE (Original Equipment) number 1731ER is a manufacturer's reference code for Catalyst converter used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 1 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 1731ER.
