ACDelco 18B479 Gold Professional Rear Brake Drum - G3000 Cast Iron, 10 In.

The ACDelco 18B479 is a Gold Professional rear brake drum constructed from G3000 SAE qualified cast iron for structural integrity and long service life. Ready to install straight out of the box, this drum meets or exceeds OE design standards — no machining required.

Key Features:

• Constructed with G3000 SAE qualified cast iron for maximum durability and service life
• Inspected for balance, resulting in smooth brake operation and reduced noise
• Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear testing for reliable, high-quality performance
• Follows original manufacturers' designs for heat dispersion, helping to prolong pad life while reducing noise and vibration
• Validated to ISO/TS 16949 quality system standards
• Rust-preventative coating for corrosion protection and superior durability
• Turned brake surface finish — no machining required
• 5-bolt mounting pattern; ABS sensor ring not included

Specifications:

• Nominal Drum Diameter: 10.0 in (254 mm)
• Outside Diameter: 11.64 in (295.7 mm)
• Maximum (Discard) Diameter: 10.06 in (255.5 mm)
• Center Bore Diameter: 2.43 in (61.7 mm)
• Bolt Circle Diameter: 4.5 in (114.3 mm)
• Bolt Hole Quantity: 5
• Mount Hole Diameter: 0.621 in (15.773 mm)
• Overall Height: 4.88 in
• Material: Cast Iron
• OE Part Number: 19171750
• Alternate MPN: 018B479

The ACDelco 18B479 is a premium aftermarket replacement brake drum engineered to deliver consistent, trouble-free stopping performance as a direct OE-equivalent replacement.