Rebuild/upgrade service for Left Bow Extension Cylinder Mercedes R129 SL-Class 1298001772
  • Rebuild/upgrade service for Left Bow Extension Cylinder Mercedes R129 SL-Class 1298001772
  • 1298001672 1298002172 1298000272 1298000072 1298002072 1298001772 1298001872 1298000022 1298000048 1293200058

Left Bow Extension Cylinder - R129 SL-Class 1990-2002


You send in your leaking Left Bow Extension Cylinder, and Top Hydraulics rebuilds it.

  • Top Hydraulics replaces & upgrades ALL seals in your cylinder with our superior proprietary material including rod seals, gland seals, port seals, plug seals and piston seals. Top Hydraulics' u-cup seals have a far more reliable seal and much longer service life.

Core exchange is not available for these cylinders at this time

P/N 1298001772

Order Method:


No sales tax for orders in the USA


We provide world class technical support


3-year standard warranty (should last decades)

Left Bow Extension cylinder

It is highly recommended to upgrade these cylinders in pairs. Part ships without micro switch attached if you choose core exchange.


Convertible hydraulic cylinder rebuild/upgrade service for Mercedes R129 models 300SL, 500SL,  600SL, SL320, SL500, SL60, SL600, SL73.

Top Hydraulics Offers two options for upgrading cylinders for Mercedes convertible tops.

For Rebuilding The Cylinders That You Send In:  We gladly accept the cylinders in their locks / latches at no extra charge -- you save the extra labor and we have all the assurance that the cylinders do not accidentally get scratched upon removal from the locks.

To order with with Core Exchange: Core deposits will be refunded in full if we receive your matching cores within 90 days, and the cylinder rods are unscratched. A small "rental charge" may apply if the cores get returned later than 90 days from receipt, but we are usually extending the return period within reason without such rental charge.

Metal parts in your hydraulic cylinders do not get damaged during normal operation. Sealing surfaces (for example the polished, chromed cylinder shafts sliding through the rod seals) can easily get scratched beyond repair by tools - especially during DIY repair attempts. Top Hydraulics can replace any damaged metal parts, but has to charge extra for that service.

Seals used by Top Hydraulics, Inc. include Viton™ and Teflon™-hybrid seals, as well as enhanced Polyurethane material, which far exceed the OEM's requirements for rigidity, but provide more than double the service life for your convertible car top actuators, based on scientific test data. Making your roadster/cabriolet hydraulics better than new!

Part number - 1298001772 (AKA A129 800 17 72)

Mercedes R129 SL Years: 1990-2002

Note: Please follow removal instructions carefully on this cylinder.

Left Bow Extension Cylinder Removal Guide

1298001772 aka 129 800 1772

Specific References


R129 Bow Extension Cylinders

How to remove and replace your R129 Bow Extension Cylinders

Download (768.15KB)

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