BMI R521 is a set of drum brake shoes
type: Unknown Type
Vendor: CorvairFarmer
Description:
🔧 Part Overview
-
Part Number: R521
-
Type: Drum Brake Shoes
-
Material: Organic friction compound on steel backing
-
Formulation: Non-asbestos
-
Includes: Shoes for both wheels (axle set)
-
Application: Rear drum brake systems
-
Country of Origin: USA (based on supplier data)
🚗 Fitment Compatibility
This part is commonly used in the rear drum brakes of the following GM vehicles:
| Make | Models | Years |
|---|---|---|
| Chevrolet | C10–C30 Pickup, Suburban, G10–G30 Van, P10–P30 Series | ~1973–1982 |
| GMC | C1500–C3500 Pickup, Suburban, G1500–G3500 Van, P1500–P3500 Series | ~1973–1982 |
Fitment depends on drum diameter (typically 11" or 12") and shoe width. Always confirm with VIN or OE specs.
🔁 Cross-Reference Numbers
| Brand | Equivalent Part Numbers |
|---|---|
| Bendix | R521, R521R |
| Raybestos | 521PG, 521P |
| Wagner | Z521 |
| NAPA | TS521 |
| Centric | 111.05210 |
| Duralast | 521 |
| GM OEM | 18018364, 18018365 |
These references help locate compatible replacements across catalogs and suppliers.
🛠️ Installation Tips
-
Clean drum surface before installation
-
Match shoe arc and width to drum diameter
-
Replace return springs and adjusters if worn
-
Adjust shoes after installation for proper contact
-
Test brakes thoroughly before driving
