The difference is the rebuilt axle is made in Mexico by Cardone, the new one is made in China by ???? The significance to be is just because one see'* the same name brand for the same part- in this case they are different manufacturers. Cardone claims they are a engineering firm and make improvements in the products they rebuild over OE. I chose the rebuilt in Mexico by Cardone over the new made in China with the expectation the rebuilt may be over better quality.
BTW- Oreilly wants 89.99+ 75 for the core for the rebuilt, the same exact one at Rock Auto is 53 + 10 for the core. I guess Oreilly is making a market hoping customers do not return cores. I my casde I brought the core with me when I purchased the replacement.
2001 Bonneville SSEi, 219,000 miles.
Whats in my driveway:
1998 Chevy S10 4x4 ZR2, 1999 Olds Bravada, 2001 Pontiac Bonneville SSEi, 2007 Ford F-350 regular cab 2WD, 2008 BMW 335i coupe (Wife'* replacement for her Bonneville). The Bonneville is my favorite of all the cars in the driveway.