1965–1972 Chevrolet (Various Applications) NORS Clutch Plates TH375 / TH400 / M40 #8623113 / 8623849

Available for sale is a New Old Replacement Stock (NORS) Automatic Transmission Clutch Plate Set, part numbers 8623113 and 8623849, designed for various 1965–1972 Chevrolet applications equipped with Turbo-Hydramatic TH375, TH400, and M40 automatic transmissions. These vintage service replacement clutch plates are ideal for transmission rebuilders, restoration specialists, and classic Chevrolet enthusiasts seeking period-correct internal transmission components.

The Turbo-Hydramatic 400 (TH400), also known by Chevrolet’s M40 transmission designation, is widely regarded as one of the strongest and most durable automatic transmissions ever produced by General Motors. Introduced in the mid-1960s, it became the transmission of choice for high-performance passenger cars, full-size sedans, station wagons, muscle cars, trucks, and commercial vehicles. The TH375 was a closely related heavy-duty transmission used in select applications.

Clutch plates are among the most critical internal components within an automatic transmission. They work together with friction discs and hydraulic pressure to engage and release various gear ranges. Proper clutch operation is essential for smooth shifting, efficient power transfer, and long transmission life.

During transmission operation, clutch plates are subjected to constant heat, pressure, and friction. Over time, wear, distortion, glazing, and heat damage can occur, making replacement necessary during any quality transmission overhaul.

This set is offered as New Old Replacement Stock (NORS), meaning it was manufactured as a period replacement component and has never been installed. These components were produced specifically for service and repair use and remain a valuable option for maintaining or rebuilding vintage Turbo-Hydramatic transmissions.

Unlike used transmission components, these unused clutch plates provide fresh service life and help restore proper transmission performance. They are well suited for stock restorations, maintenance projects, and transmission rebuilds where reliable operation is desired.

As original service components for TH400 and TH375 transmissions become increasingly difficult to locate, NORS transmission parts continue to be sought after by restorers and transmission specialists.

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Product Features

• New Old Replacement Stock (NORS) transmission components
• Part Numbers: 8623113 / 8623849
• Automatic transmission clutch plates
• Designed for TH375, TH400, and M40 transmissions
• Supports proper clutch engagement and gear operation
• Helps restore transmission performance and shift quality
• Ideal for transmission rebuilds and restorations
• Unused vintage service replacement parts
• Suitable for various Chevrolet applications
• Rare period-correct transmission service components

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Vehicle Compatibility

Fits various Chevrolet applications equipped with:

• Turbo-Hydramatic TH375 Automatic Transmission
• Turbo-Hydramatic TH400 Automatic Transmission
• Chevrolet M40 Automatic Transmission

May be found in select:

• Chevrolet Impala
• Chevrolet Caprice
• Chevrolet Bel Air
• Chevrolet Biscayne
• Chevrolet Chevelle
• Chevrolet El Camino
• Chevrolet Monte Carlo
• Chevrolet Camaro
• Chevrolet Corvette
• Chevrolet Pickup Trucks
• Other GM applications using TH375/TH400 units

Compatibility varies by transmission model, production year, and internal configuration. Buyers should verify fitment using transmission specifications and part numbers before purchase.

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Condition

This item is offered in New Old Replacement Stock (NORS) condition. The clutch plates have never been installed and remain unused vintage service components. Due to long-term storage, minor shelf wear, surface discoloration, preservative coating residue, or packaging imperfections may be present.

Please review all available photographs carefully to determine the exact condition of the item being offered.

For restorers, transmission builders, and classic Chevrolet enthusiasts, these 1965–1972 Chevrolet NORS TH375 / TH400 / M40 Clutch Plates #8623113 / 8623849 represent an excellent opportunity to obtain hard-to-find vintage transmission components for a correct and reliable rebuild.