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ACDelco 18A81778SD - Disc Brake Rotor - 8 Lug Holes, Cast Iron Slotted, Turned, Vented, Front
$32499
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ACDELCO part description
Product Description
Front Brake Rotor
Product Attributes
| Nominal Thickness | 38.08mm (1.499 in.) |
| BOLT CIRCLE | 170.139mm (6.698 in.) |
| Driving Style | Daily Driver, Hauling & Towing, Performance / Racing |
| Lug Holes Quantity | 8 |
| Lug Holes Quantity | 8 |
| Minimum Thickness | 36.401mm (1.433 in.) |
| Minimum Thickness | 36.401mm (1.433 in.) |
| Quantity | 1 Per Pack |
| Quantity | 1 Per Pack |
| Rotor Construction | 1-Piece |
| Rotor Construction | 1-Piece |
| Rotor Design | Rotors Only |
| Rotor Design | Rotors Only |
| Rotor Diameter | 363mm (14.29 in.) |
| Rotor Diameter | 363mm (14.29 in.) |
| Rotor Finish | Turned |
| Rotor Finish | Turned |
| Rotor Height | 61.199mm (2.409 in.) |
| Rotor Height | 61.199mm (2.409 in.) |
| Rotor Material | Cast Iron |
| Rotor Material | Cast Iron |
| Rotor Style | Slotted |
| Rotor Style | Slotted |
| Rotor type | Vented |
| Rotor type | Vented |
| Nominal Thickness | 1.496 IN |
| Bolt Thread Pitch | 0.059 IN |
| Height (in) | 5.921 in |
| Bolt Circle Diameter (in) | 6.693 in |
| Lug Quantity | 8 |
| Outside Diameter | 14.291 IN |
| Discard Thickness | 36.4 MM |
| Nominal Thickness | 38 MM |
| Height (mm) | 150.4 mm |
| Bolt Circle Diameter (mm) | 170 mm |
| Inside Diameter | 230.7 MM |
| Outside Diameter | 363 MM |
| Bolt Thread Pitch | 1.5 MM |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 4 | A low or sinking brake pedal. |
| Product Description | ACDelco Gold (Professional) Performance (Severe Duty) Disc Brake Rotors are a high quality alternative to Original Equipment (OE) parts. These brake rotors provide reliable vehicle braking power. They feature a thickness variation that helps to minimize pedal pulsation, noise, and help to extend brake pad life. These brake rotors meet the SAE standard for structural integrity with OE matched material, delivering guaranteed performance. Black and gray fusion coating provides corrosion protection. These rotors are uniquely designed for off road vehicles, SUVs, trucks, and fleet trucks. ACDelco Gold (Professional) Performance (Severe Duty) Disc Brake Rotors are ready to be installed right out of the box - no machining required. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Disc Finish | Bare |
| Signs of Wear & Troubleshooting - Section 1 - Header | Brake rotor signs of wear include: |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 5 | Braking causes the pedal and/or steering wheel to pulsate/vibrate (not to be confused with normal ABS operation. |
| Good Maintenance Practices - Section 1 - Bullet 2 | Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required. |
| Good Maintenance Practices - Section 1 - Bullet 1 | Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations. |
| Good Maintenance Practices - Section 1 - Bullet 4 | Check the thickness of your brake pads. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 2 | Chirping, grinding, or squeaking noises when braking. |
| Features & Benefits - Bullet 2 | Damped iron metallurgy reduces noise and dissipates heat |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 3 | Difficulty stopping the vehicle. |
| FAQ - Question 1 | Do I have to replace all my brake parts when replacing my brake rotors? |
| FAQ - Question 2 | Do I have to replace my brake rotors after a certain amount of time? |
| Good Maintenance Practices - Section 1 - Bullet 3 | Inspect the brake lines for rust, punctures or visible leaks (You may be able to do this, but consult a qualified technician if necessary). |
| Good Maintenance Practices - Section 2 - Bullet 2 | Inspection of brake lining and pads for wear or contamination by brake fluid or grease. |
| Good Maintenance Practices - Section 2 - Bullet 1 | Inspection of the brake hoses for brittleness or cracking. |
| Good Maintenance Practices - Section 2 - Bullet 3 | Inspection of wheel bearings and grease seals. |
| Features & Benefits - Bullet 7 | Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models |
| Features & Benefits - Bullet 1 | Match OE vane configuration for reduced brake wear and optimal cooling |
| Features & Benefits - Bullet 4 | Mill balanced to reduce vibration |
| Programming Required | No |
| FAQ - Answer 1 | No, but it is a good idea to inspect them for wear-out, cracking, leaking etc. |
| FAQ - Answer 2 | No, but it is a good idea to inspect your brake rotors at each tire rotation. |
| Features & Benefits - Bullet 3 | Non-directional rotation eliminates the need for unique left and right designations |
| Good Maintenance Practices - Section 2 - Bullet 4 | Parking brake adjustments (as needed). |
| Features & Benefits - Bullet 6 | Premium aftermarket replacement part |
| Features & Benefits - Bullet 5 | Some ACDelco Gold parts may have formerly appeared as ACDelco Professional |
| Good Maintenance Practices - Section 1 - Header | The following inspections and maintenance procedures can help prevent potential brake problems: |
| Good Maintenance Practices - Section 2 - Header | The following should be conducted by a qualified technician: |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 6 | Vehicle pulls to the left or right when brakes are applied. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 1 | Visible ridges on rotor surface. |
| Center Hole Diameter | 2.543 IN |
| Center Hole Diameter | 64.6 MM |
| Discard Thickness | 1.433 IN |
| Inside Diameter | 9.083 IN |
| Mounting Bolt Hole Circle Diameter | 6.693 IN |
| Mounting Bolt Hole Circle Diameter | 170 MM |
| Mounting Bolt Hole Diameter | 0.551 IN |
| Mounting Bolt Hole Diameter | 14 MM |
| Mounting Bolt Hole Quantity | 8 |
| Overall Height | 5.921 IN |
| Overall Height | 150.4 MM |
| Solid Or Vented Type Rotor | Vented |
| Stud/Lug Hole Quantity | 8 |
| Conventional Or Drum-In-Hat Type Rotor | Conventional |
| ABS Tone Ring Included | Yes |
Additional Information
| Warranty Special | 24 Months/Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details|36 Months/60,000 Kilometers Limited Warranty (Parts Only). Please see ACDelcocanada.com for more details |
| Harmonized Tariff Code (HTS) | 8708305030 |
| Country of Origin (Primary) | CN |
| Warranty Special UOM | TX |
| UPC | 00808709773719 |
A true OEM auto parts brand for GM and non-GM vehicles, ACDelco® offers a wide portfolio of parts designed to keep vehicles on the road longer. These parts work precisely and fit perfectly because they are designed, engineered, tested, and backed by General Motors. But ACDelco also carries aftermarket components that go through the same 18-step quality approval process as the OE parts. Whether customers choose OE or aftermarket, they’d get the same reliable performance, precise engineering, and superior reliability for years to come. ACDelco’s expansive product portfolio includes alternators, filters, batteries, brakes, belts and hoses, oil and fluids, and suspension parts. These products are made to meet GM and non-GM vehicles’ ever-evolving powertrain, collision, maintenance, and repair needs.
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