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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: hdaniels on March 02, 2023, 10:21:04 AM

Title: Spicer P621 universal joint current part #?
Post by: hdaniels on March 02, 2023, 10:21:04 AM

Hi,

I am replacing the u-joints on the front axle of my 1973 Blazer 4x4. One of the universal joints seems to be different and on the end caps reads Spicer P621. Does anyone know a current part # for this part? I am unable to find any references to that part # on this site or any good leads on the internet.

Thank!

Title: Re: Spicer P621 universal joint current part #?
Post by: Shifty on March 02, 2023, 02:16:08 PM

I can tell you that the current Spicer p/n # is 5-760x, if that will help at all...

Title: Re: Spicer P621 universal joint current part #?
Post by: hdaniels on March 04, 2023, 08:57:08 PM

I purchased MOOG parts.

The replacement part for Spicer P621 is MOOG #377. I needed 2 Moog #377 for front inner axle u-joints and 5 Moog #369 for the rear axle, Moog #607 for the center yoke.

Hopefully that helps.