ACDelco Professional Brake Drums are constructed with G3000 SAE qualified material for structural integrity and maximum service life. They are tested to ISO/TS 16949 quality system standards and validated for balance to provide better braking performance. Chamfer angle, vane configuration, and plate thickness all follow the OE design, making them a premium aftermarket replacement for your GM and non-GM vehicle. Also, no machining is required. ACDelco Professional Brake Drums are ready to be installed right out of the box.

• Inspected for balance; resulting in smooth brake operation and noise reduction
• Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear testing; resulting in high quality and reliable products
• Follows original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life while reducing noise and vibration

ABS Tone Ring Included:	No
Bolt Circle Diameter (in):	6.5
Bolt Circle Diameter (mm):	165.1
Bolt Hole Quantity:	8
Brake Surface Finish:	Turned
Center Bore Diameter (in):	4.63in
Center Bore Diameter (mm):	117.5mm
Depth:	3.67
Depth:	93.2
Discard Thickness (in):	13.09
Discard Thickness (mm):	332.5
Grade Type:	Regular
Height (in):	8.25
Length (in):	13.09
Material:	Cast Iron
Maximum Brake Diameter (Discard):	332.49
Mount Hole Diameter (in):	0.629in
Mount Hole Diameter (mm):	15.977mm
Nominal Drum Diameter:	0.515
Nominal Drum Diameter:	13.1
Outer Cooling Fins:	Yes
Outside Diameter:	0.609
Outside Diameter:	15.5
Programming Required:	No
Stud/Lug Hole Diameter:	0.621
Stud/Lug Hole Diameter:	15.75
Stud/Lug Hole Quantity:	8
Weight:	46.8
Width (in):	16.25

• 1983-1986 Chevrolet C20 | Position: Rear
• 1983-1986 Chevrolet C20 Suburban | Position: Rear
• 1983-1996 Chevrolet G30 | Position: Rear
• 1983-1986 Chevrolet K20 | Position: Rear
• 1983-1986 Chevrolet K20 Suburban | Position: Rear
• 1983-1989 Chevrolet P20 | Position: Rear
• 1983-1986 GMC C2500 | Position: Rear
• 1983-1986 GMC C2500 Suburban | Position: Rear
• 1983-1996 GMC G3500 | Position: Rear
• 1983-1986 GMC K2500 | Position: Rear
• 1983-1986 GMC K2500 Suburban | Position: Rear
• 1983-1989 GMC P2500 | Position: Rear
• 1989-2000 GMC C2500 | Position: Rear
• 1989-2000 GMC K2500 | Position: Rear
• 1987-1988 Chevrolet R20 | Position: Rear
• 1987-1988 Chevrolet R20 Suburban | Position: Rear
• 1987 Chevrolet V20 | Position: Rear
• 1987-1988 Chevrolet V20 Suburban | Position: Rear
• 1987-1989 GMC R2500 | Position: Rear
• 1987-1991 GMC R2500 Suburban | Position: Rear
• 1987 GMC V2500 | Position: Rear
• 1987-1991 GMC V2500 Suburban | Position: Rear
• 1988-1989 Chevrolet C3500 | Position: Rear
• 1988-1989 Chevrolet K3500 | Position: Rear
• 1988-1989 GMC C3500 | Position: Rear
• 1988-1989 GMC K3500 | Position: Rear
• 1989-2000 Chevrolet C2500 | Position: Rear
• 1989-2000 Chevrolet K2500 | Position: Rear
• 1989 Chevrolet R2500 | Position: Rear
• 1989-1991 Chevrolet R2500 Suburban | Position: Rear
• 1989-1991 Chevrolet V2500 Suburban | Position: Rear
• 1999 GMC C2500 Suburban | Position: Rear
• 1996-2002 Chevrolet Express 2500 | Position: Rear
• 1996-2002 GMC Savana 2500 | Position: Rear
• 1997-1999 Chevrolet K2500 Suburban | Position: Rear
• 1998-1999 Chevrolet K1500 Suburban | Position: Rear
• 1998-1999 GMC C1500 Suburban | Position: Rear
• 1998-1999 GMC K1500 Suburban | Position: Rear
• 1999 Chevrolet C2500 Suburban | Position: Rear
• 2000 Chevrolet Suburban 1500 | Position: Rear