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Mercedes 1298000378 SL R129 top hydraulic line port seal kit - valve block

We offer a complete hydraulic line port seal kit / repair kit for the valve block (Mercedes part numbers A1298000378 / 1298000378, A1298001078 / 1298001078, A1298002178 / 1298002178, A1298002278 / 1298002278) used in Mercedes SL R129 models. 


These seals are located within the hydraulic ports of the valve block and consist of a uniquely shaped quad seal and a CNC machined brass support ring to keep the seal in place. The support rings are CNC-milled to our specification in Germany within tolerance class DIN ISO 2768-1-f (fine) and then precision ground to ensure a high level of accuracy.



Attention: Special tools are needed for the removal of the old and insertion of the new brass support rings.

Attention: Although the seals we offer have a high temperature range, they may only be used with the following types of hydraulic fluid to ensure smooth operation and a long service life:
- Genuine Mercedes Benz hydraulic fluid MB 343.0, hydraulic fluids in accordance with standard DIN 51 524, HLP 32 or standard ISO 11158, HM 32