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U-joint size

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Old Apr 23, 2015 | 09:18 AM
  #1  
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U-joint size

How can I determine the size of the U-joint, without crawling under the truck?
By VIN? '99 F-250 SD Extended cab LB Lariat 6.8 V-10.

Looking up the parts at O'reilly, shows me 2 different widths.

I could order from Ford but they don't seem to have greaseable
U-joints and they only show one part number.
 
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Old Apr 26, 2015 | 01:35 PM
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Dana Spicer makes our drivetrain. I use their website to get the part number I need.


OEM Parts | Aftermarket Drivelines, Axles, U-Joints and More - Spicer


Once I get the part number I want, I Google for the best price.
 
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Old Apr 26, 2015 | 07:44 PM
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After discussing greasable VS non greasable u-joints with a driveline shop and
reading the Spicer website, I have decided to go non greasable.

From what I have found, they are stronger and last longer than the greasable type,
contrary to what I've always done and heard. Old habits die hard.
 
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Old Apr 26, 2015 | 09:36 PM
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I never considered that. I just bought new greasable u-joints for my front axles and I'm looking at new u-joints front to back on the driveline. I was going to find greasable ones but now I might just reconsider. I've grown up with "greasable is better" for decades so those words to live by are going to die really, really hard...
 
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Old Apr 27, 2015 | 05:49 AM
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I've seen a lot of discussion about U-joints with grease fittings failing because a crack started at the grease fitting hole.
 
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Old Apr 27, 2015 | 11:39 AM
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From: Land of Taxes
Originally Posted by ligito
How can I determine the size of the U-joint, without crawling under the truck?
By VIN? '99 F-250 SD Extended cab LB Lariat 6.8 V-10.



I could order from Ford but they don't seem to have greaseable
U-joints and they only show one part number.
Yes by the vin. The dealer will have the application via your vin. Get the FoMoCo PN and Spicer will cross ref it.
Solid Ujoints are stronger. If thats not a concern then go grease-able. Use spicer grease.
 
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