ACDelco 18FR2079 | Rear Left Disc Brake Caliper

Part Number
Rear Driver Side Brake Caliper

Fits: 02-09 Chevrolet Trailblazer, 02-06 Chevrolet Trailblazer EXT, 02-09 GMC Envoy, 02-06 GMC Envoy XL, 02-04 Oldsmobile Bravada, 03-06 Chevrolet SSR, 03-08 Isuzu Ascender, 04-07 Buick Rainier, 04-05 GMC Envoy XUV, 05-09 Saab 9-7x

Special Price $118.79 Regular Price $131.99
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Estimated Ship Date: 1 Business Day or Less
ACDelco Professional Remanufactured Friction Ready Disc Brake Calipers use both aluminum and iron castings, making them a high quality replacement for many vehicles on the road today. These loaded calipers contain Ethylene Propylene (EPDM) rubber components to provide superior resistance to heat, corrosion, and leakage. Remanufacturing disc brake calipers is an automotive industry practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Professional Remanufactured Friction Ready Disc Brake Calipers are developed without attached brake pads, allowing customization for the application at hand. Bleeder screws, copper sealing washers, hardware, and mounting brackets are all included for easy installation. These friction ready disc brake calipers will provide the same performance, durability, and service life you expect from ACDelco. ? WARNING: Cancer and Reproductive Harm -



  • Buick;Chevrolet;GMC;Isuzu;Oldsmobile;Saab
  • Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
  • Developed without attached brake pads for customization
  • Pressure tested to ensure safe and confident braking


Bleeder Thread DiameterM10x1
Caliper ColorNatural
Caliper Slides IncludedYes
Caliper TypeFloating
Casting MaterialAluminum
FAQ - Answer 1No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
FAQ - Answer 2Yes, ACDelco also offers GM OE disc brake calipers.
FAQ - Answer 3No, but it is a good idea to inspect them at every tire rotation.
FAQ - Question 1Do I have to replace all my brake parts when replacing my disc brake calipers?
FAQ - Question 2Does ACDelco offer other grades of disc brake calipers?
FAQ - Question 3Do I have to replace my disc brake calipers after a certain amount of time?
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 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).
Good Maintenance Practices - Section 1 - Bullet 4Check the thickness of your brake pads.
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems:
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 - Bullet 3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4Parking brake adjustments (as needed).
Good Maintenance Practices - Section 2 - HeaderThe following should be conducted by a qualified technician:
Grade TypePerformance
Height (in)6.7
Inlet Fitting TypeFemale
Length (in)9.5
Mounting Bracket IncludedYes
Mounting Hardware IncludedYes
Pad Wear Sensor IncludedNo
Pads IncludedNo
Piston 1 Diameter (in)1.9
Piston 1 Diameter (mm)48.3
Piston 2 Diameter (mm)55.88
Piston Quantity1
Programming RequiredNo
Signs of Wear & Troubleshooting - Section 1 - Bullet 4Vehicle pulls to the left or right when brakes are applied.
Signs of Wear & Troubleshooting - Section 1 - Bullet 5Brake pedal pulsation (not to be confused with normal ABS operation).
Weight (lb)6.11
Width (in)6.7



  • 2003-2008 Isuzu Ascender - Position: Rear Left
  • 2002-2009 Chevrolet Trailblazer - Position: Rear Left
  • 2005-2009 Saab 9-7x - Position: Rear Left
  • 2002-2009 GMC Envoy - Position: Rear Left
  • 2004-2007 Buick Rainier - Position: Rear Left
  • 2003-2006 Chevrolet SSR - Position: Rear Left
  • 2002-2006 GMC Envoy XL - Position: Rear Left
  • 2002-2004 Oldsmobile Bravada - Position: Rear Left
  • 2002-2006 Chevrolet Trailblazer EXT - Position: Rear Left
  • 2004-2005 GMC Envoy XUV - Position: Rear Left
Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
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