Rear Brake Wheel Cylinder (19.05mm) – 644-352-513-01 The 644-352-513-01 wheel cylinder is a direct-replacement part for the rear axle of early Porsche sports cars. It features a 19.05mm internal bore and is designed to fit either the left or right rear side (two are required per vehicle). Because these classic braking systems are sensitive to moisture and corrosion from aging brake fluid, replacing pitted or leaking cylinders is essential for safety and balanced braking. This part is part of the Dansk Classic range from JP Group, specifically engineered for vintage restoration projects where fitment accuracy and period-correct aesthetics are required. Detailed Vehicle Compatibility Porsche 356: 1950, 1951, 1952, 1953, 1954, 1955 Porsche 356A: 1955, 1956, 1957, 1958, 1959 Porsche 356B: 1960, 1961, 1962, 1963 Product Highlights & Features Interchangeable Design: Fully compatible with either the rear left or rear right position, simplifying parts ordering and inventory. Corrosion Protection: Treated with a protective finish to resist the internal rust that often plagues classic cars stored for long periods. Restoration Grade: Produced by JP Group Dansk, a leader in the classic Porsche aftermarket, ensuring the casting and threads match original specifications. Technical Specifications Part Number: 644-352-513-01 Alternative Part Number: 1661300200 Bore Size: 19.05mm Position: Rear (Left or Right) Brake Type: Drum Brakes Installation & Maintenance Tips Brake Fluid Flush: Always perform a full system flush with fresh DOT 3 or DOT 4 fluid when replacing wheel cylinders. Old fluid contains moisture that will quickly ruin the new rubber seals. Bleeder Valve Care: During installation, ensure the bleeder screw is accessible and not obstructed by the backing plate. Use a flare nut wrench to avoid stripping the hydraulic line fittings. Pair Replacement: It is highly recommended to replace wheel cylinders in pairs (both rear wheels) to ensure even braking pressure and prevent the car from pulling to one side under heavy braking. 64435251301 1661300200 JP-2264-0
