0204Y21821 – Used Parts Vendor https://www.usedpartsvendor.com Citroën Peugeot spare parts Mon, 13 Apr 2026 10:41:58 +0000 en-GB hourly 1 https://wordpress.org/?v=7.0 Main Brake Cylinder Citroën C1 Peugeot 107 0204Y21821 4601R3 https://www.usedpartsvendor.com/chassis-and-axles/brake-system/boosters-brake-cylinders/c1-107-boosters-brake-cylinders/master-cylinder-citroen-c1-peugeot-107-0204y21821-4601r3/ Fri, 12 Nov 2021 10:20:02 +0000 https://www.usedpartsvendor.com/master-cylinder-citroen-c1-peugeot-107-0204y21821-4601r3/ The Main Brake Cylinder is a crucial component for the efficient functioning of the braking system in Citroën C1 and Peugeot 107 models. It ensures the proper transfer of hydraulic pressure to the brake calipers, facilitating effective braking performance.

This part, specifically designed for the PSA Citroën Peugeot range, includes part numbers 0204Y21821 and 4601R3, guaranteeing compatibility and high quality. Regular inspections of the brake cylinder are essential, especially after extensive use or if you experience a spongy brake pedal. Typically, the main brake cylinder may need replacement every 60,000 to 100,000 miles, depending on driving conditions and maintenance.

Replacing the main brake cylinder involves disconnecting the brake fluid lines, removing the faulty unit, and installing the new cylinder, followed by bleeding the brake lines to ensure no air is trapped in the system. Remember to always use brake fluid approved for your vehicle to maintain system integrity.

Technical Information

  • Manufacturer: BOSCH
  • Model: Citroën C1, Peugeot 107
  • Product Codes: 0204Y21821
  • Additional Numbers: 4601R3
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