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2003–2008 BMW Z4 Roadster 4-Piece Top Hydraulic Hose Set
Note: This listing is for four hoses that fit the left side cylinder upper port #11 and lower port #12 connections, BMW MPN 54347119639, and the right side cylinder upper port #13 and lower port #14 connections, BMW MPN 54347119640.
We believe that our hoses are the best available. Here is why:
- Industry’s highest burst pressure rating at 27,500 psi (1,900 bar). In comparison, most modern convertible top hydraulic systems operate at a maximum pressure of 2,900 psi or 200 bar. Hose material manufacturer certified pressure rating is clearly printed on all of our hoses.
- We partnered with a hose manufacturer in Europe to select the best materials to produce hoses that perform with superior physical strength, flexibility, kink resistance, chemical resistance, and low moisture diffusion.
- Hose size is DN2, which measures at 2mm internal diameter and 5mm external diameter which is 0.5mm larger than the OEM hose. The larger wall thickness contributes to the hose’s high strength and puncture resistance.
- Our hoses are fitted with the correct factory style connectors and include copper banjo seals for trouble free, direct-fit installation.
Cabriolet Hydraulics hoses are assembled in the USA using precision-made fittings also made in the USA.
Warranty Info: Cabriolet Hydraulics hoses are made in the USA to the highest quality standards. When properly installed, our hoses are warrantied for 5 years. If you are not satisfied with the hoses for any reason, you can return them for a full refund as long as the hoses have not been used. Not covered under the warranty: Hose damage caused by mishandling, improper installation and malfunctioning convertible top components.
What We Do
Cabriolet Hydraulics, LLC is a premiere convertible top hydraulics specialist and rebuilder located on the sunny Gulf Coast of Florida in the Sarasota-Bradenton area, a true hot spot for convertibles.
It’s inevitable that over time, convertible top hydraulic systems fail. Original equipment manufacturer (OEM) parts can be expensive. We offer a high quality, lower cost, improved alternative to the expensive OEM replacement parts for convertible top hydraulic systems.
We rebuild convertible top hydraulic cylinders and pumps and produce hydraulic hoses and related products for models made by Porsche, Mercedes-Benz, Ferrari, Bentley, Rolls-Royce, Jaguar, Maserati, Lamborghini, Aston Martin, Saab, Chrysler, Audi, Volkswagen, Cadillac, Chevrolet, and more.