3R03-402 – Transmission Yokes – 3R Series – 31/32 X 1.391 Splines – 1.886″ Hub Dia

3R03-402 is a Transmission Yoke that plays a crucial role in connecting your driveshaft to GM manual and automatic transmissions, particularly those with 32-spline output shafts like the Turbo 400 and transfer cases such as the 208/241. If you’re experiencing vibrations or driveline noise, a worn or damaged yoke can be the culprit. Symptoms like clunking during shifts or excessive play in the driveshaft often point to a failing yoke.

This 3R Series yoke features a full spline design with a 31/32 X 1.391 spline count, ensuring a secure fit to the transmission. The hub diameter measures 1.886 inches, which is critical for proper alignment and engagement with the mating components. The center U joint to end distance of 7.187 inches is also essential for maintaining the correct driveshaft length and angle, preventing premature wear on other driveline parts.

• Check spline engagement depth during installation.
• Verify phasing with the opposite yoke to avoid vibrations.
• Ensure the yoke fits securely to the transmission output shaft.
• Inspect for signs of wear or damage before installation.

Replacing a worn yoke with the 3R03-402 restores optimal function and reliability to your driveline system. Don’t overlook this critical component; proper installation and maintenance can prevent costly repairs down the line.