722.9 Bonded Piston Kit (3pc K1/B1/B3) for Mercedes (05-Up)

This 722.9 Bonded Piston Kit for Mercedes 2005-Up is the complete high-quality 3-piece solution (K1, B1 & B3) for your 7G-Tronic automatic transmission. With OEM reference K136900-99, these bonded pistons are a direct replacement that restores factory-level clutch apply and hydraulic sealing.

Over time the original bonded rubber hardens, cracks, or leaks, leading to the most common 722.9 complaints: slipping during acceleration, harsh or delayed shifts, erratic engagement, and sudden loss of 3rd gear or neutral condition (especially K1 clutch). Installing this kit during a rebuild or repair eliminates these problems and helps prevent premature clutch wear for reliable long-term performance.

Perfect for professional shops and experienced DIYers working on 2005 and newer Mercedes-Benz vehicles equipped with the 722.9 transmission. This precision set installs easily with no modifications required, bringing your Mercedes back to smooth, dependable shifting. All parts distributed by Stellar Automotive Group.

• Complete 3-piece bonded piston kit (K1, B1 & B3) with OEM reference K136900-99 for Mercedes 722.9 7G-Tronic transmissions
• Direct drop-in replacement restores proper clutch sealing and hydraulic pressure in the most common wear areas
• Fixes frequent 722.9 issues including K1 piston failure that causes loss of 3rd gear/neutral, slipping, harsh shifts, and delayed engagement
• Premium molded rubber pistons prevent leaks and deliver firm, smooth shifting performance
• Essential upgrade for any 722.9 transmission rebuild or major service on 2005 and newer models
• Fits Mercedes-Benz C-Class, E-Class, S-Class, ML/GL, CLS, SLK, CLK, and more equipped with 722.9
• All parts distributed by Stellar Automotive Group