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- Rear Disc Brake Rotor
Part TypeBrake Rotor
BrandACDELCO
Package Height4.5
Package Width16.2
Package Length16.4
Weight26.25 PG
Weight24.85
Overall Rotor Diameter (Mm)330.25mm
Center Hole Diameter5
Good Maintenance Practices - Section 1 - Bullet 1Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Number Of Lugs8
Directional Or Non-Directional Brake SurfaceNon-Directional
Disc ConstructionVented
Good Maintenance Practices - Section 1 - Bullet 4Check the thickness of your brake pads.
Max Center Hole Diameter4.84 in (122.936 mm)
Abs Sensor Ring IncludedNo
Good Maintenance Practices - Section 1 - Bullet 2Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - Section 1 - Bullet 3Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
Disc FinishGround
Pad Contact Surface Width (Mm)48
Center Hole Diameter (Mm)122.78
Stud/Lug Hole Quantity8
Product DescriptionGM Genuine Parts Disc Brake Rotors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts OE Brake Rotors are the true OE parts installed during production or validated by General Motors for GM vehicles. GM engineers spent many years developing, testing, and validating brake rotor solutions for each brake corner for every GM vehicle. GM Genuine OE rotors are designed, engineered, tested to rigorous standards and backed by General Motors.GM Genuine Parts are the true OE parts installed duri ng the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Bolt Circle Diameter (Mm)165.1
Nominal Thickness (Mm)29.1
ConstructionFull Cast
Front Brake TypeVarious - Application Specific
Width (In)13.3
Pad Contact Surface Width1.8
Hat FinishCoated
Overall Rotor Diameter13 in (330.2 mm)
Mounting Bolt Hole Circle Diameter165
Lug Quantity8
Pitch Circle Diameter (Mm)165.1
Discard Thickness (Mm)27.5
Length (In)14.1
Abs Tone Ring IncludedNo
Body TypeVarious - Application Specific
Overall Height (Mm)90
Surface TypeSmooth
Bolt Circle Diameter (In)6.5
PositionRear
Outside Diameter12.99
Part CategoryReplacement Parts
Overall Height93
Pitch Circle Diameter6.5 in (165.1 mm)
Good Maintenance Practices - Section 2 - Bullet 3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4Parking brake adjustments (as needed).
Programming RequiredNo
Thickness (Mm)28.9
Discard Thickness1.08
Thickness1.137 in (28.9 mm)
Rear Brake TypeVarious - Application Specific
Stud/Lug Hole Diameter16.43
Good Maintenance Practices - Section 2 - Bullet 1Inspection of the brake hoses for brittleness or cracking.
Bolt Circle Diameter6.50
Features &#38; Benefits - Bullet 10GM regularly updates production and service part designs to integrate new materials and technologies
Good Maintenance Practices - Section 2 - Bullet 2Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Outside Diameter (Mm)330.25
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 1Visible ridges on rotor surface.
Includes Abs Sensor RingNo
Signs Of Wear &#38; Troubleshooting - Section 1 - HeaderBrake rotor signs of wear include:
Brake SystemVarious - Application Specific
Features &#38; Benefits - Bullet 6Designed to meet GM resonant frequency separation requirements to help reduce the risk of brake noise
Features &#38; Benefits - Bullet 7Designed to customer vehicle parameters to resist thermal roughness
Inside Diameter8.12
Max Bolt Hole Diameter (Mm)16.53
Features &#38; Benefits - Bullet 8GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Features &#38; Benefits - Bullet 9GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features &#38; Benefits - Bullet 2OE brake components are specifically designed to work with your GM vehicle safety systems
Bolt Hole Quantity8
Features &#38; Benefits - Bullet 3FNC rotors are hardened and strengthened during an extended manufacutirng process that helps provides an extra defensive barrier against the corrosive threat of water, sale, and even acid rain
Max Center Hole Diameter (Mm)122.88
Features &#38; Benefits - Bullet 4OE brake systems and components are required to meet Federal Motor Vehicle Safety Standards (FMVSS)
Max Bolt Hole Diameter0.65 in (16.51 mm)
Features &#38; Benefits - Bullet 5Carbon ceramic brake rotors are used in high performance vehicles because the carbon fibers provide strength and the ceramic rotors are lighter than standard iron
Height (Mm)88.9
Features &#38; Benefits - Bullet 1Most GM OE brake rotors sold in the U.S are Ferritic Nitro-Carburized, or FNC rotor
Solid Or Vented Type RotorVented
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems.
Good Maintenance Practices - Section 1 - Bullet 9The following should be conducted by a qualified technician:
MaterialCast Iron
Bearings IncludedNo
Stud/Lug Hole Circle Diameter164.53
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 6Vehicle pulls to the left or right when brakes are applied.
Height (In)3.5
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 2Chirping, grinding, or squeaking noises when braking.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 3Difficulty stopping the vehicle.
Rust Resistant CoatingYes
SlottedNo
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 4A low or sinking brake pedal.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 5Braking causes the pedal and/or steering wheel to pulsate/vibrate (not to be confused with normal ABS operation.
Part FitmentDirect Fit
Nominal Thickness29
Grade TypeOE
Vendor Part Number177-861
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
