crown forging makes the same joint body for the greacable series neapco and spicer- so its dam near the same - the non greacable Oem is still the best- for instance 5-153x is 1/2 ton joint -the neapco is 1-0153 - brute force 1-1053bf same damn things - but same 1/2 ton joint 5-626x spicer is a whole lot stronger and more durable one main reason is they are so much better on the sealing -nothing gets out nothing gets in- hope this helps- oh yeh the oem spicer is much more money in comparison- Jess
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