ACDELCO
More Information for ACDELCO 18A878
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ACDELCO 18A878  
$65.79
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$65.79
Total
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ACDELCO 18A878 Specifications
Abs Tone Ring IncludedYes
Bolt Circle Diameter (IN)4.75
Bolt Circle Diameter (MM)120.6
Directional or Non-Directional Brake SurfaceNon-Directional
Discard Thickness (IN)0.97
Discard Thickness (MM)24.65
Height (IN)5.75
Hub AttachedYes
Length (IN)11.62
Mounting Bolt Hole Circle Diameter (IN)4.75
Mounting Bolt Hole Circle Diameter (MM)120.65
Mounting Bolt Hole Diameter (IN)0.488
Mounting Bolt Hole Diameter (MM)12.4
Nominal Thickness (IN)1.04
Nominal Thickness (MM)26.4
Outside Diameter (IN)10.5
Outside Diameter (MM)266.7
Overall Height (IN)4.31
Overall Height (MM)109.45
Rotor Outside Diameter (IN)10.5
Rotor Outside Diameter (MM)266.7
Solid Or Vented Type RotorVented
Weight (lb)13.1
Width (IN)11.62
Gold / Professional; Black Hat Rotor & Hub
ACDelco Gold (Professional) Rotors provide reliable vehicle braking power and are an ideal aftermarket replacement for your GM and non-GM vehicle. They feature a thickness variation that is less than 0.0004 to minimize pedal pulsation, noise, and help with brake pad life. These rotors meet the SAE standard for structural integrity with OE matched G3000 qualified material delivering guaranteed performance.

Features & Benefits:
  • Rust-preventative coating, applied to the rotor hat, edges and cooling vanes, provides corrosion protection for superior durability
  • Inspected for balance; helping with smooth brake operation and noise levels
  • Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear testing; resulting in high quality and reliable rotors
  • Follows original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life while also helping to minimize noise and vibration
  • Ready to be installed right out of the box – no machining required
Installation Tips
  • Always replace Brake Pads and inspect Calipers and Brake Hoses when installing new rotors
  • Suspend the caliper from the suspension using a Caliper Hanger to prevent damage to the brake hose
  • After removing the old rotor, clean the hub face with a Wire Brush to remove rust buildup and apply Copper Anti Seize to prevent future buildup. Rust or debris on the hub can cause rotor runout and lead to wheel vibration
  • Apply Brake Lube to caliper pins, clips, the edges of the brake pad mounting tabs, and the back side of the brake pads to ensure noise free braking. DO NOT apply lube to the friction side of the brake pads
  • Use a Caliper Piston Compressor to retract the caliper piston(s) and make room for the new, thicker brake pads
  • Open the master cylinder reservoir during piston compression to prevent pressure buildup. Keep an eye on the Brake Fluid level to ensure it does not overflow
  • After the job is complete, pump the brake pedal several times to push the caliper piston back up against the pads to ensure proper brake function


OEM / Interchange Numbers: 19175076

Warranty Information:
24 Month / Unlimited Mile Warranty
Warranty Details