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- Rear Drum In-Hat Disc Brake Rotor
Part TypeBrake Rotor
BrandACDELCO
Package Height3.4
Package Width12.9
Package Length12.9
Weight15.3 PG
Part CategoryReplacement Parts
Overall Height2.68 in (68.1 mm)
Number Of Lugs6
Disc ConstructionVented
Max Center Hole Diameter4.18 in (106.172 mm)
Abs Sensor Ring IncludedNo
Discard Thickness0.63 in (16.002 mm)
Pad Contact Surface Width (Mm)39.65
Center Hole Diameter (Mm)106.17
Overall Rotor Diameter (Mm)311.91
Nominal Thickness (Mm)18.034
Center Hole Diameter4.18 in (106.172 mm)
Disc FinishGround
Bolt Hole Quantity6
Overall Rotor Diameter12.28 in (311.9 mm)
Bolt Circle Diameter (Mm)139.7
Pitch Circle Diameter (Mm)139.7
Discard Thickness (Mm)16.002
Overall Height (Mm)68.07
PositionRear
Solid Or Vented Type RotorVented
MaterialCast Iron
Pitch Circle Diameter5.5 in (139.7 mm)
Pad Contact Surface Width1.6
Hat FinishTurned
Thickness (Mm)18.034
Thickness0.71 in (18 mm)
Bolt Circle Diameter5.5 in (139.7 mm)
Rust Resistant CoatingYes
Outside Diameter (Mm)311.91
Includes Abs Sensor RingNo
SlottedNo
Max Bolt Hole Diameter (Mm)106.17
Surface TypeSmooth
Part FitmentDirect Fit
Outside Diameter12.28 in (311.9 mm)
Nominal Thickness0.71 in (18 mm)
Grade TypeRegular
Vendor Part Number18A1227
Package Qty1
Package TypeEA
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