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GM 8.5" Rear - 30 Spline - 10 bolt cover with 8.5 ring gear. Ring gear has 10 bolts and pinion has 30 spline. C clip rear could have 28 or 30 spline axles. Sometimes referred to as the GM 10-bolt . GM 8.5" Rear - 30 Spline
10 bolt cover with 8.5" ring gear. Ring gear has 10 bolts and pinion has 30 spline. C/clip rear could have 28 or 30 spline axles. Sometimes referred to as the "GM 10-bolt".

•  Ring Gear Diameter:  8.500
•  Cover Bolts:  10
•  Ring Gear Bolts:  10
•  Spline Count:  30
•  Dropout:  False
•  Pinion Support:  False
•  Carrier Breaks:  2.56 / 2.73
•  Rear Suspension:  Solid
•  Pinion Nut Size:  1-1/4

Compatible with Models:

Blazer:  1988 - 1994  (Rear)
C15/ C1500 1/2 Ton (2WD):  1988 - 1999  (Rear)
C1500 1/2 Ton (2WD):  1988 - 1999  (Rear)
C25/ C2500 3/4 Ton (2WD):  1997 - 2000  (Rear)
C2500 3/4 Ton (2WD):  1989 - 2000  (Rear)
Caprice:  1989 - 1996  (Rear)
Catalina:  1977 - 1981  (Rear)
Escalade:  1999 - 2000  (Rear)
Escalade:  1999 - 2000  (Rear)
Escalade:  1999 - 2000  (Rear)
Express Van 1500 1/2 Ton:  1996 - 2003  (Rear)
G10 1/2 Ton:  1988 - 1995  (Rear)
G15/ G1500 1/2 Ton:  1988 - 1995  (Rear)
G20 3/4 Ton:  1988 - 1995  (Rear)
G25/ G2500 3/4 Ton:  1988 - 1995  (Rear)
Impala:  1988 - 1996  (Rear)
K10/ K1500 1/2 Ton (4WD):  1988 - 1999  (Rear)
K15/ K1500 1/2 Ton (4WD):  1988 - 1999  (Rear)
K5 Blazer (4WD):  1979 - 1991  (Rear)
S10 Blazer / Pickup:  1994 - 2000  (Rear)
S10 Blazer / Pickup:  1994 - 2000  (Rear)
S15 Jimmy / Pickup:  1994 - 2000  (Rear)
Savana 1500 1/2 Ton:  1996 - 2003  (Rear)
Savana 2500 3/4 Ton:  1996 - 1998  (Rear)
Sonoma:  1994 - 1998  (Rear)
Suburban 1/2 Ton:  1988 - 2000  (Rear)
Suburban 1/2 Ton:  1988 - 2000  (Rear)
Suburban 1/2 Ton:  1988 - 2000  (Rear)
Suburban 1/2 Ton:  1988 - 2000  (Rear)
Tahoe 1500 1/2 Ton:  1995 - 1998  (Rear)
Tahoe 1500 1/2 Ton:  1995 - 1998  (Rear)
Typhoon:  1992 - 1993  (Rear)
Yukon 1500 1/2 Ton:  1992 - 2000  (Rear)