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Sonnax offers the GM-90-61G flanged impeller hub for GM 300mm LU (4L60-E) converters. If using the thicker and more durable GM-N-20 impeller side bearing in place ...Read More
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Tool Kit for 77754-42K
Tool Kit for 77754-62K.
Sonnax offers GM-O-13 piston seal, a direct OE replacement for GM 258mm (5L40-E, 4T65-E) and GM 300mm (4L60-E) applications.
Tool Kit for 77964-14K.
Reamer for 77964-04K
Sonnax offers this genuine AC Delco 3-4 clutch boost spring and retainer assembly for the 4L60 (700-R4), 4L60-E, and 4L65-E.
Sonnax impeller hub GM-90-76G offers another optional length for rebuilding GM 280mm (4L60-E) “VJCX” converters, which are experiencing higher-than-normal pump rot...Read More
’03–’08
Sonnax clip 77754-08 for GM 4L60, 4L60-E, 4L65-E and 4L70-E transmissions is a hairpin-style valve body retainer that replaces lost or damaged OE components.
The three lugs welded to the OE stamped steel cover in GM 280mm LU (4L60-E) “VJCX” converters are prone to flexing and cracking. Made from a fully machined forging...Read More
Tool Kit for 77754-03K, 77754-04K, 77754-ISO
’00–’02, Annular Lockup
Sonnax now offers a specially designed Torx® Plus bit 77000-HBK for removing 4L60-E bell housing bolts. The bit has a tighter fit with the drive head of the bolt. ...Read More
Sonnax offers accumulator spring 74926 for use in the 1-2 or 3-4 accumulator of GM 4L60 and 4L60-E series transmissions. The Sonnax spring has identical performanc...Read More
Sonnax enhanced performance accumulator spring 77704S provides firmer 1-2 shifts for the enthusiast that appreciates quick, positive shift feel in listed GM units....Read More
Replacement seal kit for 77987-01K
Sonnax has designed .015" thick front endplay shim 77409-15 for listed GM units to better help the needs of the rebuilder in the selection of shims when checking f...Read More
A worn OE pressure regulator valve can be detected in two ways. The first is a dynamometer test that reveals low line pressure during boost conditions (look for 50...Read More