The rubber insert on your Porsche 944 Turbo aux water pump (951.606.130.01) clamp is likely hard and crumbling. Porsche does not sell a replacement insert - you would have to buy the entire clamp (951.106.325.00) - $$$ In my search I was not able to find a suitable replacement - standard insulated P-Clamps are not wide enough. These inserts are available in 5 (5) colors, and are made of durable polyurethane - so they are flexible, highly resistant to oil and chemicals, and will last longer than the originals. Sell price is for 1 (1) rubber clamp insert. ** Please indicate your color choice as a comment when purchasing - BLACK - RED - BLUE - GREEN - ORANGE Note: Insert is 3D printed using fused deposition modeling - surface finish is excellent but is not perfectly smooth like injection molding - this is inherent in the type of manufacturing and has no effect on the performance. I can combine shipping at no additional cost for up to 4 (4) items from this item or the other 3D printed items I'm selling. Shipping small-packet from Canada to: Within Canada: 3-5 business days USA: 5-8 business days Europe: 5-10 business days Aus/NZ: 10-15 business days