B1 2-6 Brake Band for Aisin TF80SC TF81SC AF40 AF21

B1 2-6 Brake Band for Aisin TF80SC TF81SC AF40 AF21 Six-Speed Automatic Transmissions

Direct replacement B1 brake band for compatible Aisin Warner TF80SC and TF81SC automatic transmissions. Also fits applicable AF40, AF40-6, AF21, and AWF21 transmission configurations.

Part Identification

B1 2-6 Brake Band

Common Reference Numbers: 255024A, 513706

Application Range: 2005-up compatible Aisin six-speed transmission applications

About This Part

This internal B1 brake band operates in the 2-6 brake circuit of the TF80SC and TF81SC transmission family. It is a practical replacement during a professional transmission rebuild when the original band shows heat damage, excessive wear, scoring, distortion, or other signs of failure.

A worn or damaged B1 band may be associated with slipping, RPM flare, harsh shifts, delayed shifts, shift concerns in 2nd or 6th gear, and certain gear-ratio faults. Because similar symptoms can result from hydraulic, valve body, solenoid, clutch, or other internal transmission concerns, confirm the cause of failure before completing repairs.

Compatible Transmission Names

TF80SC

TF81SC

AF40

AF40-6

AF21

AWF21

Common Vehicle Families

Compatible applications may include selected Buick, Cadillac, Chevrolet, Ford, Hyundai, Lincoln, Mazda, Mercury, Saab, and Volvo vehicles equipped with the applicable Aisin six-speed transmission. Fitment varies by model year, drivetrain, engine, transmission identification, and regional configuration.

Please compare your removed band, verify the transmission model, and confirm fitment before ordering.

Service Recommendation

Replace related worn transmission components during overhaul, including friction plates, steels, seals, pistons, and any damaged drum or hydraulic-control components. When refilling after service, use Lubegard ATF Protectant to help support smoother shifts and ongoing transmission performance.