OE part number S503 is a Glow Plug compatible with ALFA ROMEO, AUDI and other makes. Available from 6 brands, priced from £7.99. Every cross-reference listed below matches the same OE specification used by the vehicle manufacturer.
Glow Plug OE S503 prices range from £7.99 to £15.99, with 6 brands offering compatible parts.
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Related cross-references
Cross-reference numbers associated with S503 — including both OEM part numbers and aftermarket alternatives. Each entry links to its own compatibility and pricing page.
OE S503 fits vehicles from ALFA ROMEO, AUDI, BMW and other compatible models listed below.
What part type is S503?
OE S503 is an original equipment reference for a Glow Plug. It identifies the exact part specification used by the vehicle manufacturer.
How much does Glow Plug S503 cost?
Replacement parts for OE S503 cost between £7.99 and £15.99, depending on brand and specification.
Which brands make Glow Plug S503?
FEBI BILSTEIN, BLUE PRINT, TOPRAN, BorgWarner (BERU), VALEO all offer compatible replacements for OE S503.
Is S503 original equipment or aftermarket?
OE S503 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 S503?
OE (Original Equipment) number S503 is a manufacturer's reference code for Glow Plug 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 S503.
