Rostra Archives - Transmission Digest
Rostra highlights GM 8L90 speed sensor, harness assembly

Rostra highlights its speed sensor and harness assembly for GM 8L90 transmissions. The kit number is 50-1613, and it covers model years 2015 to 2022.

Integration becomes synergy for Sonnax and Rostra

Klynt Baker, the recently appointed president of Sonnax and Rostra, says that his responsibilities aren’t two aftermarket companies owned by Marmon Holdings. Baker says that Sonnax and Rostra have integrated their operations to the point that there are indeed two brands encompassed in a single business. The Marmon Automotive Aftermarket Group is a subsidiary of

Rostra offers variable bleed solenoids for second generation Ford 6F35

Rostra announced that it offers 10 NH/NL variable bleed solenoids for bands 1–5 for the Ford 6F35 transmission (second generation). Touting an improved design, Rostra says that these solenoids can achieve improved sensitivity, reduced hysteresis over the OE design and highly accurate pressure control in the 6F35.

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