Automatic Transmission Disc Seal Kit

This seal kit is a small but critical service part that keeps transmission fluid exactly where it must be. It is needed when rebuilding the clutch/drum area or fixing internal oil leaks that cause slipping, delayed engagement, or harsh shifting ⚙️.

How it works

Inside the transmission, hydraulic pressure applies clutch packs. The seals in this kit sit around rotating and stationary surfaces, creating tight hydraulic chambers. When the pump sends fluid, these seals hold pressure so the disc pack clamps firmly and releases cleanly. Good sealing also prevents cross-leaks between circuits, keeping shifts smooth and consistent.

Why replacement matters

Over time, heat and old fluid harden rubber, flatten sealing lips, and nick edges during disassembly. Fresh seals restore correct pressure, improve shift feel, and help protect friction discs from burning ?.

If the seals are worn or broken

Expect low apply pressure, slipping on acceleration, flare between gears, delayed Drive/Reverse engagement, overheating, and eventual clutch failure. Continued driving can contaminate the whole unit with debris, turning a simple reseal into a full rebuild ❗.

Compatibility

• Q45
• Qx4