ACDelco 18A951XS Gold Enhanced Performance Heavy Duty Rear Disc Brake Rotor

The ACDelco 18A951XS is an ACDelco Gold Enhanced Performance Heavy Duty rear disc brake rotor engineered as a high-quality alternative to Original Equipment (OE) parts. Designed to meet the rigorous demands of heavy-duty applications, this rotor delivers reliable stopping power, reduced noise, and long-lasting durability.

Key Features:

• Enhanced Performance Heavy Duty classification — built to handle demanding braking cycles beyond standard daily driving
• Vented, 1-piece full cast iron construction follows original manufacturer designs for optimal heat dissipation, helping to prolong pad and rotor life
• Turned and ground finish on the rotor surface minimizes thickness variation for consistent, fade-resistant braking
• 5-lug, rear-position fitment with a 12-inch (304.8mm) outside diameter
• Inspected for balance to ensure smooth brake operation and noise reduction
• Independently tested including Noise/Vibration/Harshness (NVH) and durability/wear testing for high-quality, reliable performance
• OEM Part Number cross-reference: 19175119
• Sold individually (1 rotor per pack)

Specifications:

• Outside Diameter: 12.0 in (304.8mm)
• Nominal Thickness: 1.025 in (26.035mm)
• Minimum (Discard) Thickness: 0.970 in (24.638mm)
• Center Bore Diameter: 2.8 in (71.12mm)
• Bolt Circle Diameter: 4.646 in (118.008mm)
• Lug Hole Quantity: 5
• Rotor Height: 2.4 in (60.96mm)
• Rotor Style: Plain (non-slotted, non-drilled)
• Rotor Type: Vented
• Construction: 1-Piece Cast Iron

The ACDelco 18A951XS Gold Enhanced Performance rotor is validated through an extensive testing regimen for quality, performance, and dependability — making it an ideal upgrade for drivers who demand more from their brake system.