Eff 34066b Bushing 400 Extension Housing 1.995 Inches Od 1 Inch Long 1964 and Up

Product Description

The EFF 34066b is a replacement bushing designed for the 400 extension housing, compatible with applications from 1964 and up. This bushing measures 1.995 inches in outer diameter and 1 inch in length, making it a precise fit for the extension housing bore on Turbo-Hydramatic 400 automatic transmissions. Extension housing bushings play a critical role in drivetrain performance. They support the driveshaft yoke where it enters the rear of the transmission, keeping the yoke centered and reducing radial play. A worn or damaged bushing in this location can cause driveshaft vibration, transmission fluid leaks at the rear seal, and premature wear on the output shaft and rear seal itself. Replacing a worn extension housing bushing is a standard part of any thorough automatic transmission rebuild or overhaul. Transmission rebuilders, drivetrain specialists, and professional mechanics rely on correctly sized replacement bushings to restore proper clearances and extend the service life of the transmission. The EFF 34066b is made to match the original equipment dimensions, ensuring a correct press fit into the extension housing bore. Its 1.995 inch outer diameter seats securely in the housing, while its 1 inch length provides adequate surface area to support the driveshaft yoke under normal operating loads. This part is suitable for use in passenger cars, trucks, and performance builds that utilize the Turbo-Hydramatic 400 transmission platform. Whether performing a full transmission rebuild or addressing a specific leak or vibration issue at the tail shaft, the EFF 34066b delivers a reliable, dimensionally accurate solution for extension housing bushing replacement.

• Replacement extension housing bushing for Turbo-Hydramatic 400 transmissions, 1964 and up
• Outer diameter of 1.995 inches and length of 1 inch for precise press fit in the housing bore
• Supports driveshaft yoke alignment, reduces radial play, and helps prevent rear seal leaks

Product Highlights

The EFF 34066b provides a dimensionally accurate replacement bushing for the 400 extension housing, restoring proper yoke support and drivetrain stability in 1964 and later applications.

Product Information

Standard Information

• Brand: EFF
• Manufacturer Part Number: 34066b

Technical Specifications

• Component Type: Extension Housing Bushing
• Application: 400 Transmission Extension Housing
• Outer Diameter: 1.995 inches
• Length: 1 inch
• Compatibility: 1964 and up