1939–1948 Chevrolet Passenger Car & 1941–1946 Chevrolet Truck NOS Upper Mast Jacket Bearing Assembly #264887

Available for sale is a genuine General Motors New Old Stock (NOS) Upper Mast Jacket Bearing Assembly, GM part number 264887, for select 1939–1948 Chevrolet passenger cars and 1941–1946 Chevrolet trucks. This original GM service replacement component is a rare and highly desirable part for restorers seeking factory-correct steering column components for their classic Chevrolet restoration projects.

The steering column is one of the most important control systems in any vehicle, and the upper mast jacket bearing assembly plays a critical role in supporting and guiding the steering shaft within the steering column. Positioned near the upper section of the mast jacket, this bearing helps maintain proper steering shaft alignment while allowing smooth and controlled steering wheel movement.

As vehicles age, steering column components are subjected to decades of vibration, road shock, environmental exposure, and continuous use. Original bearings can become worn, dry, damaged, or loose over time, resulting in excessive steering wheel play, vibration, noise, or reduced steering precision. Replacing worn steering column components is an important part of maintaining both vehicle safety and driving comfort.

This bearing assembly is a true New Old Stock (NOS) GM service replacement part. Manufactured by General Motors during the original production era and never installed on a vehicle, it offers the quality, fitment, and engineering specifications intended by Chevrolet. Unlike many modern reproductions, genuine NOS components retain the original materials and manufacturing standards that restorers value.

The years covered by this application represent a significant period in Chevrolet history. Chevrolet passenger cars produced between 1939 and 1948 included many of the brand’s most recognizable pre-war and post-war models. Likewise, Chevrolet trucks built from 1941 through 1946 earned a reputation for durability, reliability, and hardworking performance that continues to attract collectors and enthusiasts today.

When restoring a vintage Chevrolet, steering system components deserve careful attention. While exterior trim and mechanical systems often receive the spotlight, steering column hardware contributes significantly to vehicle operation and authenticity. Properly functioning steering components help preserve the original driving characteristics engineered by Chevrolet.

This NOS upper mast jacket bearing assembly is ideal for replacing a worn, damaged, or missing original component during a steering column rebuild or complete vehicle restoration. Because steering column service parts were often replaced during a vehicle’s working life, finding an unused original GM component today has become increasingly difficult.

Collectors and restoration professionals understand the value of genuine GM service parts. Using authentic components helps ensure proper fit, reliable performance, and factory-correct appearance while maintaining the historical integrity of the vehicle. For show-quality restorations, original GM hardware is often preferred over reproduction alternatives.

As supplies of original Chevrolet service parts continue to diminish, NOS steering components have become increasingly sought after. Genuine GM parts not only support proper operation but also contribute to the long-term value and authenticity of a restoration project.

Whether you’re restoring a pre-war Chevrolet passenger car, rebuilding a post-war sedan, or bringing a vintage Chevrolet truck back to life, this Upper Mast Jacket Bearing Assembly offers an excellent opportunity to install a genuine factory replacement part designed specifically for these applications.

Product Features

• Genuine General Motors New Old Stock (NOS) part
• GM Part Number: 264887
• Upper Mast Jacket Bearing Assembly
• Original GM service replacement component
• Factory-correct fit and function
• Supports steering shaft alignment
• Helps reduce steering wheel play and vibration
• Improves steering column operation
• Never installed on a vehicle
• Ideal for restoration and steering system rebuild projects

Vehicle Compatibility

Chevrolet Passenger Cars

• 1939 Chevrolet Passenger Car
• 1940 Chevrolet Passenger Car
• 1941 Chevrolet Passenger Car
• 1942 Chevrolet Passenger Car
• 1946 Chevrolet Passenger Car
• 1947 Chevrolet Passenger Car
• 1948 Chevrolet Passenger Car

Chevrolet Trucks

• 1941 Chevrolet Truck
• 1942 Chevrolet Truck
• 1946 Chevrolet Truck

Compatibility may vary based on steering column configuration and production specifications. Buyers should verify fitment before purchase.

Condition

This component is offered in New Old Stock (NOS) condition. It has never been installed and remains an original GM service replacement part. Due to long-term storage, minor shelf wear, packaging marks, surface aging, or handling imperfections may be present.

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

For collectors and restoration enthusiasts seeking authentic factory steering components, this 1939–1948 Chevrolet Passenger Car & 1941–1946 Chevrolet Truck NOS Upper Mast Jacket Bearing Assembly #264887 represents an excellent opportunity to acquire a genuine GM service part that helps preserve the originality, functionality, and value of your classic Chevrolet restoration.