HomeBrake > Drums and RotorsMPA Electrical BR55031G Disc Brake Rotor - Rear
Part #: BR55031G

MPA Electrical BR55031G Disc Brake Rotor - Rear

Black Series Coated Rotor, Rear
6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Black Series Coated Rotor, Rear
Fitment: Chevrolet and GMC, P30 and P3500
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Overview of MPA Electrical Black Series Coated Rotor BR55031G

The MPA Electrical Black Series Coated Rotor BR55031G is engineered for reliable braking performance on Chevrolet and GMC P30 and P3500 models. This vented disc brake rotor features a rust-resistant coating designed to extend rotor life and maintain smooth braking under demanding conditions.

  • Compatible with Chevrolet P30 and GMC P3500 vehicles
  • Vented disc brake rotor for improved heat dissipation
  • Coated disc and hat finish for enhanced corrosion resistance
  • Nominal thickness of 1.43 inches (36.2 mm) with discard thickness at 1.37 inches (34.7 mm)
  • Standard replacement grade type with smooth surface finish
  • Mounting bolt hole circle diameter of 184.2 mm and 10 stud/lug holes
  • Center hole diameter of 139.8 mm for precise fitment

Black Series Coated Rotor Product Line Details

The Black Series Coated Rotor line by MPA Electrical focuses on providing rotors with a protective coating on both the disc and hat surfaces. This coating helps resist rust and corrosion, which is particularly beneficial for vehicles like the Chevrolet P30 and GMC P3500 that may be exposed to harsh environments. The vented design supports better heat management during braking, contributing to consistent performance and rotor longevity.

Technical Specifications and Features

This disc brake rotor is designed as a standard replacement part, ensuring compatibility and reliable function for your Chevrolet P30 or GMC P3500. The rotor’s nominal thickness measures 1.43 inches (36.2 mm), with a discard thickness of 1.37 inches (34.7 mm), indicating when the rotor should be replaced to maintain safe braking. The smooth surface finish supports even pad wear and braking efficiency. The rotor includes a mounting bolt hole circle diameter of 184.2 mm and 10 stud/lug holes, matching factory specifications for secure installation.

Applications and Problem Solving

  • Replacement for worn or warped rotors on Chevrolet P30 and GMC P3500
  • Addresses rotor corrosion issues with rust-resistant coated surfaces
  • Improves heat dissipation to reduce brake fade during heavy use
  • Restores smooth braking performance by replacing damaged or uneven rotors
  • Compatible with vehicles requiring vented rotors for enhanced cooling

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 1.37 inches (34.7 mm) before installation. Clean the hub surface and mounting area to prevent uneven rotor seating. Use the correct torque specifications for the 10 mounting bolts to secure the rotor properly. This rotor does not include bearings or an ABS tone ring, so verify compatibility with your vehicle’s braking system before installation.

Quality Assurance

The MPA Electrical Black Series Coated Rotor BR55031G is a new, standard replacement part manufactured to meet OEM specifications. The rust-resistant coating enhances durability and corrosion resistance. While no specific warranty information is provided, the product condition is new and designed for reliable service on Chevrolet P30 and GMC P3500 models.

BrandMPA Electrical
Part NumberBR55031G
PositionBlack Series Coated Rotor, Rear
Discard Thickness1.37
Discard Thickness34.7
Nominal Thickness1.43
Nominal Thickness36.2
Disc FinishCoated
Hat FinishCoated
Rust Resistant CoatingYes
Grade TypeStandard replacement
ABS Tone Ring IncludedNo
Surface TypeSmooth
Solid Or Vented Type RotorVented
Bearings IncludedNo
Center Hole Diameter139.8
Mounting Bolt Hole Circle Diameter184.2
Mounting Bolt Hole Circle Diameter7.250
Mounting Bolt Hole Diameter0.669
Mounting Bolt Hole Diameter17.0
Stud/Lug Hole Quantity10
FinishCoated
Product ConditionNew

This part fits 6 vehicles. Search below:

YearMakeModelPositionNotes
1999ChevroletP30RearBlack Series Coated Rotor
1999GMCP3500RearBlack Series Coated Rotor
1998ChevroletP30RearBlack Series Coated Rotor
1998GMCP3500RearBlack Series Coated Rotor
1997ChevroletP30RearBlack Series Coated Rotor
1997GMCP3500RearBlack Series Coated Rotor

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.