
Part TypeBrake Rotor
BrandACDELCO
Center Bore Diameter (Mm)0mm
Rotor Outside Diameter12.5
Center Bore Diameter (In)0in
Good Maintenance Practices - Section 1 - Bullet 1Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Good Maintenance Practices - Section 1 - Bullet 4Check the thickness of your brake pads.
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 FinishTurned
Product DescriptionACDelco Specialty Performance Disc Brake Rotor and Hub Assemblies provide reliable vehicle braking power. With this assembly the rotor is conveniently pre-fitted to the wheel hub as one combined piece. The rotor features a thickness variation that helps to minimize pedal pulsation, noise, and help to extend brake pad life. It meets the SAE standard for structural integrity with OE matched material, delivering guaranteed performance. ACDelco Specialty Performance Disc Brake Rotor and Hub Assemblies are ready to be installed right out of the box - no machining required. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Bolt Circle Diameter (Mm)165.1
ConstructionFull Cast
Pad Contact Surface Width53.35
Hat FinishTurned
Hub AttachedYes
Outside Diameter (Mm)317.5
Outside Diameter (In)12.5
Abs Tone Ring IncludedYes
Surface TypeSmooth
Bolt Circle Diameter (In)6.5
Overall Height5.177
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
Discard Thickness1.201
Good Maintenance Practices - Section 2 - Bullet 1Inspection of the brake hoses for brittleness or cracking.
Good Maintenance Practices - Section 2 - Bullet 2Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - Section 2 - HeaderThe following should be conducted by a qualified technician:
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 1Visible ridges on rotor surface.
Signs Of Wear &#38; Troubleshooting - Section 1 - HeaderBrake rotor signs of wear include:
Faq - Answer 2No, but it is a good idea to inspect your brake rotors at each tire rotation.
Faq - Answer 1No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
Features &#38; Benefits - Bullet 2Inspected for balance, resulting in smooth brake operation and noise reduction
Bolt Hole Quantity8
Meets Or Exceeds Original Equipment Manufacture SpecificationsYes
Features &#38; Benefits - Bullet 3Damped iron metallurgy reduces noise and dissipates heat
Features &#38; Benefits - Bullet 4Balance validated to ensure smooth braking
Height (Mm)131.8
Features &#38; Benefits - Bullet 1Match OE vane configuration for reduced brake wear and optimal cooling
Solid Or Vented Type RotorVented
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems:
MaterialCast Iron
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 6Vehicle pulls to the left or right when brakes are applied.
Height (In)5.2
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
SlottedYes
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).
Stud Quantity8
Nominal Thickness1.287
Faq - Question 2Do I have to replace my brake rotors after a certain amount of time?
Faq - Question 1Do I have to replace all my brake parts when replacing my brake rotors?
Vendor Part Number18A658SD
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations