# 99420-01
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Both Input and Output Shafts
Fits units with .669" (16.98mm) dia. shaft journals only.
Symptoms:
Cause:
OE bushing material composition allows premature wear.
Correction:
Install improved Sonnax input/output shaft bushings to restore critical clearances and resist untimely wear.
Warning:
Caution: Use of an arbor press is required for correct installation. Do not use a hydraulic press or a bushing driver/hammer combination to install, as doing so will distort the bushing and cause fitment issues.
The OE bushings used at the input-to-intermediate shaft and intermediate-to-output shaft in ZF6HP19, ZF6HP26, ZF6HP28 and Ford 6R80 units have a tendency to wear out prematurely due to sub-optimal material composition. This wear can lead to bushing failure, pressure control codes, and loss of correct pressure to the B-clutch. This Sonnax input/output shaft bushing features superior wear characteristics, eliminating premature deterioration for worry-free operation. The upgraded material composition outperforms the OE bushing.
Specifications:
SONNAX Installation Instructions