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- Rear Drum In-Hat Disc Brake Rotor
Part TypeBrake Rotor
BrandACDELCO
Package Height3.4
Package Width12.9
Package Length12.9
Weight15.0 PG
Weight15
Part CategoryReplacement Parts
Overall Height2.669
Number Of Lugs6
Programming RequiredNo
Disc ConstructionSolid
Discard Thickness0.413
Center Bore Diameter (Mm)101mm
Max Center Hole Diameter3.98 in (101.092 mm)
Abs Sensor Ring IncludedNo
Overall Rotor Diameter (Mm)311.91mm
Center Bore Diameter (In)4in
Center Hole Diameter3.976
Pad Contact Surface Width (Mm)41
Center Hole Diameter (Mm)101.09
Features & Benefits - Bullet 6Premium aftermarket replacement part
Features & Benefits - Bullet 7Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
Features & Benefits - Bullet 2Black coating on hat and vanes
Nominal Thickness (Mm)11.988
Disc FinishGround
Bolt Hole Quantity6
Features & Benefits - Bullet 3Quality validated for proper metallurgy and correct brake plate thickness
Features & Benefits - Bullet 4Tighter tolerances similar to GM OE specifications
Overall Rotor Diameter12.28 in (311.9 mm)
Features & Benefits - Bullet 5Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Pitch Circle Diameter (Mm)139.7
Stud/Lug Hole Quantity6
Discard Thickness (Mm)10.49
Product DescriptionACDelco Gold (Professional) Non-Coated Disc Brake Rotor and Hub Assemblies are a high quality alternative to Original Equipment (OE) parts. These rotors are mounted to the wheel hub where the calipers can press the brake pads against the brake surface to help stop the vehicle. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Mounting Bolt Hole Quantity6
Overall Height (Mm)67.82
Height (Mm)67.8
PositionRear
Bolt Circle Diameter (Mm)139.7
Features &#38; Benefits - Bullet 1Cross drilled for quick brake response and heat dissipation
Mounting Bolt Hole Diameter0.543
Pitch Circle Diameter5.5 in (139.7 mm)
ConstructionFull Cast
Solid Or Vented Type RotorSolid
Thickness (Mm)11.988
Width (In)13
MaterialCast Iron
Thickness0.472 in (12 mm)
Bolt Circle Diameter5.5 in (139.7 mm)
Pad Contact Surface Width1.6
Hat FinishTurned
Outside Diameter (Mm)311.91
Includes Abs Sensor RingNo
Mounting Bolt Hole Circle Diameter139.7
Height (In)2.7
Max Bolt Hole Diameter (Mm)101.09
Rust Resistant CoatingYes
SlottedNo
Length (In)13
Conventional Or Drum-In-Hat Type RotorConventional
Abs Tone Ring IncludedNo
Grade TypeRegular
Surface TypeSmooth
Bolt Circle Diameter (In)5.5
Part FitmentDirect Fit
Outside Diameter312
Nominal Thickness12
Vendor Part Number18A1777
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
