ÜRO Parts Coolant Expansion Tank VW GOLF MK4 GTI audi A3 S3 1J0121407F | VW Audi Skoda Seat

ÜRO Parts Coolant Expansion Tank VW GOLF MK4 GTI audi A3 S3 1J0121407F | VW Audi Skoda Seat Product Overview Replace your cracked, leaking, or yellowed factory reservoir with this premium ÜRO Parts Coolant Expansion Tank. Engineered to match original equipment standards, ÜRO coolant tanks are manufactured from high-grade, heat-stabilized plastic designed to withstand the extreme temperature fluctuations and high pressures of modern European cooling systems. Over time, factory tanks become brittle and prone to hairline fractures; this direct-fit replacement restores your cooling system's integrity, preventing dangerous coolant loss and engine overheating. Key Features & Benefits Direct-Fit OE Replacement: Matches factory dimensions, mounting points, and hose connections precisely for a hassle-free install. Premium Material Construction: Molded from durable, heat-resistant polymer to prevent premature splitting, cracking, and discoloration. Includes Fluid Level Sensor: Comes with the integrated electronic level sensor pins to keep your dashboard warning system functioning perfectly. Pressure-Tested Integrity: Factory-tested to ensure it handles standard cooling system operating pressures without failure. Technical Specifications Manufacturer: ÜRO Parts Product Type: Engine Coolant Recovery Tank / Expansion Bottle Material: High-Grade Virgin Plastic Sensor Included: Yes (2-pin connector) Cap Included: No (Re-use your factory cap or purchase separately) Common Vehicle Compatibility This expansion tank is a widely used fitment across the Volkswagen Audi Group (VAG) platform, specifically covering many late-90s to mid-2000s models. Popular applications include: Volkswagen: Golf Mk4, Jetta/Bora Mk4, Beetle (1998–2010), Passat B5 Audi: A3 (8L), TT (8N) Skoda: Octavia Mk1 (1U) Seat: Leon Mk1 (1M), Toledo Mk2 ⚠️ Fitment Note: Please verify your vehicle’s factory tank matches the shape and the part number ending in "F", as VAG vehicles utilize highly similar-looking reservoirs with different sensor configurations or hose routing. Reference Numbers & Cross-References Brand / Manufacturer Part Number(s) OE Numbers AUDI 1J0 121 407 F, 1J0 121 407 D SEAT 1J0 121 407 F, 1J0 121 407 D SKODA 1J0 121 407 F, 1J0 121 407 D VW 1J0 121 407 F, 1J0 121 407 D Cross-Reference Numbers FEBI BILSTEIN 14700, 22240 MEYLE 100 121 0041 VAICO V10-0034 DEP_BRAND 1J0121407F