APSG Shift Lever Shaft Seal Tool Kit for GM & Allison — TIMKEN Seal, Installer/Remover, No-Drain Repair

This APSG shift lever shaft seal tool is a complete installer and removal kit that lets you replace the manual shift-selector shaft seal quickly without draining the transmission.

Designed for professional mechanics and experienced DIYers, this compact tool set removes and installs the shaft seal that prevents transmission fluid leaks around the shift lever. It fits a wide range of GM and Allison automatic transmissions across multiple model years and includes a genuine TIMKEN replacement seal. Using the tool avoids the time and mess of dropping the pan or emptying the transmission, so repairs take minutes instead of hours.

Which transmissions will this tool work on?

The APSG kit supports many GM and Allison units spanning older to modern applications. It covers popular Turbo Hydramatic families, 700-R4/4L60-series, PowerGlide, and a broad set of Allison models used in light- and medium-duty vehicles.

• GM TH180/TH180C, TH200/TH200C/TH200R4, TH250/TH250C, TH325/TH325-4L, TH350/TH350C, TH400 families
• 700-R4, 4L60/4L60E/4L65E/4L70E/4L80E/4L85E (various years), GM 6L/8L series
• PowerGlide and a long list of Allison transmissions including AT54x, MT64x, LCT series

How does the kit save time and reduce mess?

The tool is engineered to extract and seat the shift lever shaft seal while the transmission remains in place, eliminating the need to drain fluid or remove the pan. That means less cleanup, no fluid disposal, and a faster turnaround.

• Installs and removes seal with transmission fluid retained
• Complete kit contains driver components to guide the seal straight into position
• Typical service time reduced to just minutes when used correctly

What exactly is included and is the seal OEM-quality?

APSG supplies the full installer/remover tooling plus a genuine TIMKEN replacement shaft seal so you get professional-level parts in one package. The seal is matched to the tool geometry for reliable seating and long-term leak prevention when installed properly.

• Complete installer/remover tool set sized for manual selector shafts
• Genuine TIMKEN shaft seal included—no separate seal purchase required
• Compatible with common industry service tools and reference models

Are there any compatibility or usage limitations I should know about?

The tool is intended for manual shift selector (short-shaft) seals on the listed transmissions. Some late-model or long-shaft variants may not be compatible, and proper fitment should be verified against your transmission code and shaft length before purchase.

• Works with short-shaft selector designs for many listed transmissions
• Not suitable for unrelated seal types or non-listed shaft lengths without verification
• Recommended for those comfortable with basic transmission service procedures

Who is this for: This APSG Shift Lever Shaft Seal Tool is ideal for automotive technicians, fleet service shops, and knowledgeable DIY mechanics who need a fast, clean way to stop leaks at the shift selector shaft. If you service GM or Allison transmissions listed above and want to avoid dropping the pan or evacuating fluid, this kit provides the fittings and a genuine TIMKEN seal to complete the repair efficiently.