Moog 427 Universal Joint - At Rear Axle or At Transmission

MOOG 427 Universal Joint for Drive Shaft Service

MOOG 427 is a premium universal joint for driveline and axle service, built for dependable operation in the drive shaft assembly. It features 4 grooved round bearings, a greaseable design, and a regular lube fitting in the cross for service-friendly maintenance.

Key Features

• Part number: 427
• Universal joint for drive shaft applications
• 4 grooved round bearings
• Greaseable and lubricateable design
• Regular lube fitting in the cross
• Bearing cap diameter: 1.188 in. / 30.2 mm
• Length A and Length B: 3.125 in. / 79.3 mm
• OE series reference: Cleveland O55

Detailed Description

MOOG 427 is engineered for driveline service where precise fit and consistent joint movement matter. The 3.125-inch span and 1.188-inch bearing cap diameter align with the listed OE-style dimensions, while the grooved round bearing design supports secure seating in the yoke. This universal joint is a direct-fit service part for vehicles including 1979-1990 GMC P3500 at transmission, 1987-1988 Chevrolet R30 at transmission, and 1987-1988 GMC R3500 at transmission. If you are sourcing a MOOG 427 universal joint for a GMC P3500 or Chevrolet R30 driveline repair, the fitment data points to the transmission position and a 3-1/8-inch outside diameter yoke span.

This part cross-references AP Exhaust 20066 for the same application.

What It Helps Address

• Driveline vibration caused by worn joint bearings
• Clunking or looseness in the drive shaft connection
• Binding or rough movement at the transmission-side joint
• Grease retention and service access concerns on maintenance intervals
• Replacement needs for OE series Cleveland O55 applications

Installation Notes and Tips

Confirm the yoke span, bearing cap diameter, and groove style before installation. This MOOG 427 universal joint uses 4 grooved round bearings and a regular lube fitting in the cross, so the grease point should remain accessible after assembly. For best results, verify the transmission position fitment against the vehicle listing before pressing the joint into place.

Quality Assurance

MOOG backs this premium universal joint with materials selection and testing focused on reliable driveline performance. The brand’s problem-solving design approach is intended to support straightforward installation and consistent service life in the listed applications.