If what you are referring to as the c-clip that holds the inner cv joint in the side gears of the carrier, then the answer is yes, they should have one on each side (accessible by r and r-ing the rear diff cover).

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Thanks,
Mark in NC

"Spark plugs?...We don't need no stinking spark plugs!"
1985 300SD "Der Silberne Schlitten" 420,000 mi


Wish these were diesel:
2003 Ford Club Wagon 130,000 mi