OE part number S521 is a V-ribbed belt tensioner pulley compatible with ACURA, ALFA ROMEO and other makes. Available from 5 brands, priced from £32.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
V-ribbed belt tensioner pulley OE S521 prices range from £32.99 to £43.99, with 5 brands offering compatible parts.
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Related cross-references
Cross-reference numbers associated with S521 — including both OEM part numbers and aftermarket alternatives. Each entry links to its own compatibility and pricing page.
OE S521 fits vehicles from ACURA, ALFA ROMEO, ALPINA and other compatible models listed below.
What part type is S521?
OE S521 is an original equipment reference for a V-ribbed belt tensioner pulley. It identifies the exact part specification used by the vehicle manufacturer.
How much does V-ribbed belt tensioner pulley S521 cost?
Replacement parts for OE S521 cost between £32.99 and £43.99, depending on brand and specification.
Which brands make V-ribbed belt tensioner pulley S521?
BTA, SNR, Schaeffler INA, FAST, OPTIMAL all offer compatible replacements for OE S521.
Is S521 original equipment or aftermarket?
OE S521 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 S521?
OE (Original Equipment) number S521 is a manufacturer's reference code for V-ribbed belt tensioner pulley used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 5 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 S521.
