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Centric 123.66021 Brake Drum - Rear
Overview of Centric C-TEK Standard Brake Drum 123.66021
The Centric C-TEK Standard Brake Drum 123.66021 is engineered for reliable braking performance on Chevrolet and GMC trucks and SUVs. Designed specifically for models like the Blazer, K1500, Tahoe, and Yukon, this brake drum meets precise fitment and durability requirements.
- Compatible with Chevrolet Blazer, K1500, Tahoe and GMC Yukon
- Nominal drum diameter of 10.000 inches (254.000 mm)
- Outside diameter measures 11.930 inches (303.022 mm)
- Equipped with 6 bolt holes and a 5.500 inch (139.700 mm) bolt circle diameter
- Features outer cooling fins for improved heat dissipation
- Floating mounting type with 0.580 inch (14.732 mm) mounting hole diameter
- Friction surface width of 2.740 inches (69.596 mm)
- Weight approximately 20 lbs (9.091 kgs)
About the C-TEK Standard Brake Drums Line
The C-TEK Standard Brake Drums line by Centric offers dependable replacement brake drums designed to meet or exceed OEM specifications. This product line focuses on providing consistent fitment and performance for a range of domestic trucks and SUVs. The 123.66021 brake drum is part of this line, ensuring compatibility and quality for Chevrolet and GMC vehicles requiring a standard brake drum solution.
Detailed Product Description
This brake drum features a nominal diameter of 10 inches, with a maximum discard diameter of 10.090 inches (256.300 mm), allowing for precise wear limits. The outside diameter of 11.930 inches ensures proper clearance and fitment. Six bolt holes arranged on a 5.5-inch bolt circle diameter provide secure mounting. The floating mounting type and 0.580-inch mounting hole diameter facilitate straightforward installation. Outer cooling fins are integrated to enhance heat dissipation during braking, reducing the risk of overheating and brake fade. The friction surface width of 2.74 inches offers ample contact area for brake shoes, contributing to effective stopping power.
Common Applications and Problem Solving
- Replacement for worn or scored brake drums on Chevrolet Blazer and GMC Yukon
- Addressing brake noise or vibration issues caused by uneven drum surfaces
- Restoring proper brake shoe contact and stopping performance on K1500 and Tahoe models
- Resolving brake fade due to insufficient heat dissipation
- Correcting fitment problems with OEM brake drums showing excessive wear
Installation Notes and Tips
- Verify vehicle compatibility with Chevrolet Blazer, K1500, Tahoe, or GMC Yukon before installation
- Inspect brake shoes and hardware for wear and replace as necessary during drum installation
- Ensure mounting surfaces are clean and free of debris to prevent misalignment
- Check drum diameter against maximum discard specifications to confirm usability
- Torque bolts to manufacturer specifications to secure the brake drum properly
Quality Assurance and Warranty
Centric C-TEK Standard Brake Drums are manufactured to meet OEM standards for fit, form, and function. Each brake drum undergoes rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric's official documentation for complete warranty information.
| Brand | Centric |
|---|---|
| Part Number | 123.66021 |
| Position | C-TEK Standard Brake Drums, Rear |
| Bolt Circle Diameter [cntrc] in | 5.500 |
| Bolt Circle Diameter [cntrc] mm | 139.700 |
| Bolt Hole Quantity | 6 |
| Friction Surface Width [cntrc] in | 2.740 |
| Friction Surface Width [cntrc] mm | 69.596 |
| Height [cntrc] in | 3.660 |
| Height [cntrc] mm | 92.964 |
| Hub Hole / Register [cntrc] in | 3.100 |
| Hub Hole / Register [cntrc] mm | 78.740 |
| Maximum Brake Diameter (Discard) | 10.090 |
| Maximum Brake Diameter (Discard) | 256.300 |
| Mounting Hole Diameter | 0.580 |
| Mounting Hole Diameter | 14.732 |
| Mounting Type [cntrc] | Floating |
| Nominal Drum Diameter | 10.000 |
| Nominal Drum Diameter | 254.000 |
| Outer Cooling Fins | Yes |
| Outside Diameter | 11.930 |
| Outside Diameter | 303.022 |
| Weight [cntrc] kgs | 9.091 |
| Weight [cntrc] lbs | 20.000 |
This part fits 50 vehicles. Search below:
| Year | Make | Model | Body Type | # Doors | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1999 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1999 | Chevrolet | Tahoe | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1999 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1998 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1998 | Chevrolet | Tahoe | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1998 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1997 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1997 | Chevrolet | Tahoe | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1997 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1997 | GMC | Yukon | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1996 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1996 | Chevrolet | Tahoe | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1996 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1996 | GMC | Yukon | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1995 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1995 | Chevrolet | Tahoe | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1995 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1995 | GMC | Yukon | 2 Door | 4WD | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |
| 1994 | Chevrolet | Blazer | Rear | Full Size; C-TEK Standard Brake Drums | |||
| 1994 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1994 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1994 | GMC | Yukon | Rear | C-TEK Standard Brake Drums | |||
| 1993 | Chevrolet | Blazer | Rear | Full Size; C-TEK Standard Brake Drums | |||
| 1993 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1993 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1993 | GMC | Yukon | Rear | C-TEK Standard Brake Drums | |||
| 1992 | Chevrolet | Blazer | Rear | Full Size; C-TEK Standard Brake Drums | |||
| 1992 | Chevrolet | K1500 | Rear | 10" Rear Drum; 8 1/2" Rear End; C-TEK Standard Brake Drums | |||
| 1992 | GMC | K1500 | Rear | 10" Rear Drum; C-TEK Standard Brake Drums | |||
| 1992 | GMC | Yukon | Rear | C-TEK Standard Brake Drums | |||
| 1991 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 8 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1991 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1991 | Chevrolet | K1500 | Extended Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1991 | GMC | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1991 | GMC | K1500 | Rear | 10" Rear Drum; Std Ch; C-TEK Standard Brake Drums | |||
| 1990 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1990 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 8 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1990 | Chevrolet | K1500 | Extended Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1990 | GMC | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1990 | GMC | K1500 | Rear | 10" Rear Drum; Std Ch; C-TEK Standard Brake Drums | |||
| 1989 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1989 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 8 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1989 | Chevrolet | K1500 | Extended Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1989 | GMC | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1989 | GMC | K1500 | Rear | 10" Rear Drum; Std Ch; C-TEK Standard Brake Drums | |||
| 1988 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1988 | Chevrolet | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; 8 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1988 | Chevrolet | K1500 | Extended Cab Pickup | Rear | 10" Rear Drum; 9 1/2" Rear End; Std Ch; C-TEK Standard Brake Drums | ||
| 1988 | GMC | K1500 | Standard Cab Pickup | Rear | 10" Rear Drum; Hvy Dty Ch; C-TEK Standard Brake Drums | ||
| 1988 | GMC | K1500 | Rear | 10" Rear Drum; Std Ch; C-TEK Standard Brake Drums |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.