Product upgrade service

Product upgrades free of charge (consumers)

If we release new "upgraded" versions of existing products, we will notify eligible customers via email that have purchased said products in the past and inform them, that they are eligible for a replacement free of charge. This policy only applies to customers that have ordered from us directly and only to purchases made within the last 3 years before the date an upgraded version of an existing product is released. Eligibility is at our sole discretion depending on the type of upgrade that has been made.

Product upgrades free of charge (retailers)

If we release new "upgraded" versions of existing products, we will notify eligible retailers via email that have purchased said products in the past and inform them, that they are eligible for a replacement free of charge. This policy only applies to retailers that are part of our retailer network and only to purchases made within the last 5 years before the date an upgraded version of an existing product is released. Eligibility is at our sole discretion depending on the type of upgrade that has been made.

List of product upgrades:

Date: 07/18/2025
Upgrade reference code: PUSC-2025-001
Products: Convertible top hydraulic cylinder seal kit Mercedes 1298001772 - rod seal FPM, Convertible top hydraulic cylinder seal kit Mercedes 1298001872 - rod seal FPM
Product numbers: MJ10035, MJ10036
Description: A batch of 1298001772/1298001872 FPM rod seals (used in the bow extension cylinders in Mercedes SL R129 / E-Class W124 models) has been manufactured 1/10 mm thicker than specified. The rod seals might be somewhat stiff when installing.
Upgrade type: Recommended

Date: 09/18/2025
Upgrade reference code: PUSC-2025-002
Products: Convertible top hydraulic cylinder seal kit Mercedes 1248000072 - rod seal FPM, Convertible top hydraulic cylinder seal kit Mercedes W124 FPM
Product numbers: MJ10067, MJ10072
Description: The profile type of the 1248000072 FPM rod seals (used in the main lift cylinders in Mercedes E-Class W124 models) has been changed to a more modern one that reduces friction at low pressures while maintaining its performance at high pressures.
Upgrade type: Optional

Date: 09/18/2025
Upgrade reference code: PUSC-2025-003
Products: Convertible top hydraulic cylinder seal kit Mercedes 1708000572 - rod seal FPM, Convertible top hydraulic cylinder seal kit Mercedes 1708000672 - rod seal FPM
Product numbers: MJ10060, MJ10061
Description: The profile type of the 1708000572/1708000672 FPM rod seals (used in the main lift cylinders in Mercedes SLK R170 models) has been changed to a more modern one that reduces friction at low pressures while maintaining its performance at high pressures.
Upgrade type: Optional

Customers who purchase an affected product after the date shown above will receive the new "upgraded" version automatically. If you have purchased an affected product but you haven't received an email regarding a free replacement, plase send us an email at info@mjproducts.net. We will do our best to answer any emails as fast as possible.