Piston Tf-80 (AF40) / TF-81SC (AF21): Piston / Retainer / C1 Clutch (1-2-3-4) Bonded

Piston TF-80 (AF40) / TF-81SC (AF21) C1 Clutch Bonded Retainer for Various Vehicles

This bonded C1 clutch piston and retainer assembly is engineered for the TF-80SC (AF40) and TF-81SC (AF21) automatic transmissions, covering the 1-2-3-4 clutch pack. Manufactured by Atk, it delivers dependable hydraulic sealing and clutch apply performance for rebuilds and repairs.

Key Features

• Bonded piston and retainer assembly for the C1 (1-2-3-4) clutch
• Direct fit for TF-80SC (AF40) and TF-81SC (AF21) transmissions
• Precision-bonded rubber sealing surface for consistent clutch apply
• Durable steel retainer resists flex and wear under load
• Manufactured by Atk to meet or exceed OEM specifications

Compatibility

This piston and retainer fits Various vehicles equipped with AF21, AF40, and TF-8 series transmissions. It is designed for the TF-80SC (AF40) and TF-81SC (AF21) units and serves as a direct replacement for the C1 clutch (1-2-3-4) bonded piston. Please verify your transmission code and clutch position before ordering.

Why Choose This Part?

When you are rebuilding a TF-80SC or TF-81SC, the C1 clutch piston is critical to smooth 1-2-3-4 shifts and long-term reliability. This Atk-manufactured assembly gives you a precise, ready-to-install solution that helps restore firm, consistent clutch engagement. Order today and get your transmission back on the road with confidence.