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):	4.75
Bolt Circle Diameter (mm):	120.7
Bolt Hole Quantity:	5
Brake Surface Finish:	Turned
Center Bore Diameter (in):	2.81in
Center Bore Diameter (mm):	71.5mm
Center Hole Diameter:	2.813
Center Hole Diameter:	71.45
Depth:	2.44
Depth:	62
Directional or Non-Directional Brake Surface:	Non-Directional
Discard Thickness (in):	11.06
Discard Thickness (mm):	280.9
Grade Type:	Regular
Height (in):	4.2
Length (in):	11.06
Material:	Cast Iron
Maximum Brake Diameter (Discard):	280.92
Mount Hole Diameter (in):	0.453in
Mount Hole Diameter (mm):	11.506mm
Nominal Drum Diameter:	0.435
Nominal Drum Diameter:	11.05
Outer Cooling Fins:	No
Outside Diameter:	12.37
Outside Diameter:	314.2
Overall Height:	3.031
Overall Height:	77
Programming Required:	No
Stud/Lug Hole Diameter:	0.445
Stud/Lug Hole Diameter:	11.3
Stud/Lug Hole Quantity:	5
Weight:	15
Width (in):	13

• 1953-1958 Chevrolet Bel Air | Position: Front
• 1953-1970 Chevrolet Bel Air | Position: Rear
• 1953-1962 Chevrolet Corvette | Position: Front
• 1953-1965 Chevrolet Corvette | Position: Rear
• 1958 Chevrolet Biscayne | Position: Front
• 1958-1970 Chevrolet Biscayne | Position: Rear
• 1958 Chevrolet Sedan Delivery | Position: Front
• 1958 Chevrolet Sedan Delivery | Position: Rear
• 1959-1970 Chevrolet Impala | Position: Rear
• 1959-1960 Chevrolet Kingswood | Position: Rear
• 1959-1961 Chevrolet Parkwood | Position: Rear
• 1961-1964 Chevrolet Corvair Truck | Position: Front
• 1961-1964 Chevrolet Corvair Truck | Position: Rear
• 1964-1965 Chevrolet Chevelle | Position: Front
• 1964-1969 Chevrolet Chevelle | Position: Rear
• 1964-1965 Chevrolet El Camino | Position: Front
• 1964-1969 Chevrolet El Camino | Position: Rear
• 1964-1965 Chevrolet Malibu | Position: Front
• 1964-1967 Chevrolet Malibu | Position: Rear
• 1966-1970 Chevrolet Caprice | Position: Rear
• 1969-1970 Chevrolet Kingswood | Position: Rear
• 1969-1970 Chevrolet Estate | Position: Rear
• 1969 Chevrolet Townsman | Position: Rear
• 1971 Chevrolet G10 Van | Position: Front
• 1971 Chevrolet G10 Van | Position: Rear
• 1971 GMC G15/G1500 Van | Position: Front
• 1971 GMC G15/G1500 Van | Position: Rear