In vehicles with 42- 46-47RH/RE transmissions, it is common for the overdrive section to suffer from poor lube oil control, resulting in burned planetaries and failed bushings. One area of weakness is the intermediate shaft. Shafts are often contaminated and cleaning is difficult as it leaves the shaft unrepairable. The OE plug was generally not removed because replacements were not available or were difficult to find. Sonnax offers a pilot and plug kit 22171-02K to allow the shaft to be cleaned, and equally important, improve lube control. Each kit will service five shafts.