pistons Archives - Transmission Digest
Sonnax introduces new piston for ZF, Ford six-speed transmissions

Sonnax highlights its new high-strength billet aluminum piston (part no. 95984-01), which is designed to provide additional strength in ZF 6HP26 and Ford 6R60/75/80 transmissions. According to Sonnax, die-cast ZF 6HP26 and Ford 6R60/75/80 pistons commonly crack at the outer diameter of the apply area due to manufacturing defects and/or high stress areas, which is

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Mercedes-Benz 722.9 no forward movement after overhaul

The complaint A 2007 Mercedes-Benz CLS550 with the 722.9 transmission has an after-overhaul complaint of no forward movement. The cause The B2 Brake Housing inner apply piston was installed upside down—refer to the image above, left. The correction The B2 Brake inner apply piston was re-installed in the correct position, after which forward movement returned,

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Alto introduces new molded piston for VW, Toyota applications

Alto has introduced a new reverse balance molded piston for Volkswagen and Toyota applications. Models covered include the following: VW TR80-SD (0C8) model years 2009-2014; and Toyota TL-80SN, AA80E, GS/LS460, IS/F, model years 2007 through 2014. The Alto part no. is 222300.

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Alto introduces molded piston kit for GM 9T50, 9T65

Alto has introduced a three-piece molded piston kit for GM Hydra-Matic 9T50 and 9T65 nine-speed transmissions. The kit (part no. 232670) covers model years 2017 and on. It contains three pistons: the 6-7-8-9 balance piston, the 5-7 reverse apply piston, and the 3-8 apply piston.

GM 8L45/90 1-3-5-6-7 Accumulator Piston Kit

Sonnax has introduced a new drop-in Zip Valve kit. The 1-3-5-6-7 accumulator piston kit (p/n 154740-15K) eliminates leaks in GM 8L45/90 units. This kit restores normal shift operation and feel while protecting against premature wear for lasting results.

MAHLE Motorsport Announces Return to Racing Rebate

MAHLE’s consumer rebate is meant to help builders catch up in light of COVID-19.

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