FEBI 30533 — Coolant Expansion Tank Cap
Overview
Coolant expansion tank cap FEBI 30533 regulates pressure within the engine cooling circuit. Manufactured from heat-resistant polyamide, this component houses a dual-stage spring-loaded valve assembly set to an operating relief pressure of 1.4 bar. Technical specifications feature an M42x3 thread size and an integrated EPDM rubber seal resistant to ethylene glycol mixtures. The pressure relief valve vents excess vapor during thermal expansion and allows atmospheric air return during engine cooldown, preventing vacuum collapse or hose rupture. OEM cross-reference numbers include BMW 17111742231, 17117639022, 17111437362, Mini 17117541092, and Land Rover PCD100160. Unit weight is 0.06 kg.
Fitment covers BMW 3 Series E36, E46, E90, 5 Series E34, E39, E60, 7 Series E38, E65, X3 E83, X5 E53, Z4 E85, Mini Cooper R50, R52, R53, and Land Rover Freelander 1 models produced between 1995 and 2010. Suitable for petrol and diesel engines ranging from 1.6 to 4.4 litres displacement. Replacement is required when the internal valve sticks open or closed, the elastomer seal hardens, thread plastic strips, or coolant leaks around the filler neck. Replacing the cap is standard practice when renewing the reservoir, preventing overpressurisation damage.
FEBI 30533 — coolant expansion tank cap. 5 offers available, starting from 19.82 USD.
Specifications
Manufacturer — FEBI. Article number — 30533. Name — Coolant Expansion Tank Cap. Offers — 5. From — 19.82 USD.
Compatible cross-references
Replacements and analogues: FEBI 2105010715, DAIMLER 2105010615, DAIMLER 2105010715, DAIMLER AG A2105010615, DAIMLER AG A2105010715, HANS PRIES 400255.
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