Dorman 523-057 left radiator mount bracket for the 1999-2006 Chevrolet Silverado 1500 V6 4.3L, V8 4.8L or 5.3L, the 2003-2006 Silverado 1500 V8 6.0L and other vehicles holds the radiator in its mounting position. This Dorman radiator mount bracket is a direct replacement for the original on these vehicles.
- Steel construction with an electrostatic coating finish to resist rust and corrosion
- Replaces just the failed radiator mount bracket instead of the whole radiator assembly
- Helps stop rattles and metallic noises in the radiator area that are commonly linked to a failed mount bracket
- Helps protect the radiator from damage caused by a loose or failed bracket
- Dorman OE Solutions product line
Quick facts
- Part: Dorman 523-057 radiator mount bracket
- Fits: the 1999-2006 Chevrolet Silverado 1500 V6 4.3L, V8 4.8L or 5.3L, the 2003-2006 Silverado 1500 V8 6.0L and other vehicles
- Position: Left
- Material: Steel
- Condition: New
A failed bracket can show up as a rattle or metallic knock near the radiator. Before replacing it, look over the bracket and its welds with the engine off and cool, since other parts can make similar noises. This listing is one left-side bracket; the right side is a separate part, and both are normally replaced together.
Fits
It is listed for a wide range of Chevrolet, GMC and Cadillac models, including the 1999-2006 GMC Sierra 1500 V6 4.3L, V8 4.8L or 5.3L and the 2001-2006 Sierra 1500 V8 6.0L. The 2000-2006 Chevrolet Tahoe V8 4.8L or 5.3L is another, and it takes one on the left side.
Specifications
Fit and size
- Position: Left
- Quantity per vehicle: 1
- Length: 5.65 in
- Width: 1.91 in
- Thickness: 0.12 in
- Mounting holes: 1
Build and materials
- Material: Steel
- Finish: electrostatic coating
- Mounting method: weld
- Condition: New
- Country of origin: China
In the box
One radiator mount bracket. An insulator is not included.
Interchange: 28515RMB · 12477747
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Will Dorman 523-057 fit the 1999-2006 GMC Sierra 1500 V6 4.3L, V8 4.8L or 5.3L?
Yes, Dorman 523-057 is a left radiator mount bracket listed for the 1999-2006 GMC Sierra 1500 V6 4.3L, V8 4.8L or 5.3L and the 2001-2006 Sierra 1500 V8 6.0L. If your vehicle is not named here, look it up in the "Vehicles it fits" section.
Does the left radiator mount bracket come with an insulator?
No. Dorman 523-057 is supplied as one radiator mount bracket, and an insulator is not included.
What is this radiator mount bracket made of, and how does it attach?
The bracket is steel with an electrostatic coating finish that resists rust and corrosion. Its mounting method is weld.
Can a loose radiator mount bracket cause a rattle near the radiator?
It can. A failed bracket is commonly linked to rattles and metallic noises in the radiator area, though other parts can sound similar, so a shop can confirm the source.
Does Dorman 523-057 replace part number 12477747?
Yes, 12477747 is listed as an interchange number for Dorman 523-057, along with 28515RMB.
