4L40E 5L40E 5L50E [00-UP] Automatic Transmission Piston Kit Bonded Combo

A cracked or hardened piston seal bleeds off apply pressure and the clutch it feeds slips under load.

4L40E bonded piston kit combo. This set returns the apply circuit to full clamping force.

A leaking piston applies slowly, and slow apply is what burns friction material. The pistons are bonded rather than lip sealed. Shipping weight is 7.05 lb.

The parts list below is exactly what ships. Compare it against your teardown before ordering.

REMCO has supplied automatic transmission parts since 1991, and every order ships with its part listing so the receiving technician can check what arrived against what was ordered.

• Transmission Piston Kit for 4L40E - replacement component designed for proper fit and function
• Designed to support proper clutch apply pressure, stroke and sealing during piston and seal work
• Package Includes: one transmission piston kit as described, supplied loose for piston and seal work
• Bonded rubber lip seals on a steel or aluminum piston body - designed for dependable service in the intended application. Ships at 7.05 lb, 16x16x3 in
• Intended for builders correcting apply pressure loss. Lubricate the lip seals before assembly and seat the piston square in the bore

What's in the box

• 1 x Piston Kit, 4L40E 5L40E 5L50E Bonded Combo

Compatible vehicles

• Fits 323ci [00-06], 325i/xi [01-06], 328i/is [96-00], 330i/ci/xi/M [01-07], 335i/ci/xi/d [07-09], 525i [01-03], 528i/it [99-00], 530i [01-03], X3 [04-07], X5 [00-08], Z4 [01-06], CTS [03-07].