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- Rear Drum In-Hat Disc Brake Rotor
Part TypeBrake Rotor
BrandACDELCO
Package Height2.2
Package Width11.5
Package Length12.2
Weight12.0 PG
Weight11.2
Part CategoryReplacement Parts
Overall Height50.7
Number Of Lugs5
Programming RequiredNo
Disc ConstructionSolid
Discard Thickness8.9
Center Bore Diameter (Mm)70.7mm
Max Center Hole Diameter2.78 in (70.612 mm)
Abs Sensor Ring IncludedNo
Overall Rotor Diameter (Mm)277.88mm
Center Bore Diameter (In)2.8in
Center Hole Diameter70.7
Pad Contact Surface Width (Mm)38.25
Center Hole Diameter (Mm)70.61
Directional Or Non-Directional Brake SurfaceNon-Directional
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
Nominal Thickness (Mm)10.998
Features & Benefits - Bullet 2Black coating on hat and vanes
Disc FinishTurned
Bolt Hole Quantity5
Features & Benefits - Bullet 3Quality validated for proper metallurgy and correct brake plate thickness
Overall Rotor Diameter10.94 in (277.9 mm)
Features & Benefits - Bullet 4Tighter tolerances similar to GM OE specifications
Features & Benefits - Bullet 5Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Pitch Circle Diameter (Mm)115
Discard Thickness (Mm)8.991
Stud/Lug Hole Quantity5
Overall Height (Mm)50.55
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
Height (Mm)50.3
PositionRear
Bolt Circle Diameter (Mm)115
Features &#38; Benefits - Bullet 1Cross drilled for quick brake response and heat dissipation
Mounting Bolt Hole Diameter14.15
Pitch Circle Diameter4.52 in (114.8 mm)
ConstructionFull Cast
Solid Or Vented Type RotorSolid
Thickness (Mm)10.998
Width (In)11.5
MaterialCast Iron
Thickness0.433 in (11 mm)
Bolt Circle Diameter4.5
Pad Contact Surface Width38.25
Hat FinishTurned
Outside Diameter (Mm)277.9
Includes Abs Sensor RingNo
Mounting Bolt Hole Circle Diameter4.53
Height (In)2
Max Bolt Hole Diameter (Mm)70.61
Rust Resistant CoatingYes
SlottedNo
Length (In)12.2
Conventional Or Drum-In-Hat Type RotorConventional
Abs Tone Ring IncludedNo
Grade TypePerformance
Surface TypeSmooth
Bolt Circle Diameter (In)4.5
Part FitmentDirect Fit
Outside Diameter10.945
Nominal Thickness10.9
Vendor Part Number18A2321
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
