Inner Components for 2021 GMC Sierra 3500 HD
No.
Part # / Description / Price
Price
1
Outer Rail 
GM
GM Positions: Left
Notes: PARTS: Part included with radiator support with fender structure.
MSRP $555.98 CAD
$426.56 CAD
MSRP $555.98 CAD
$426.56 CAD
1
Outer Rail GM
GM Positions: Right
Notes: PARTS: Part included with radiator support with fender structure.
MSRP $555.98 CAD
$426.56 CAD
MSRP $555.98 CAD
$426.56 CAD
2
MSRP $178.11 CAD
$124.60 CAD
3
MSRP $98.19 CAD
$69.24 CAD
3
MSRP $98.27 CAD
$69.30 CAD
4
Outer Rail Bracket GM
GM Positions: Left
Notes: PARTS: Part included with outer rail.
Description: Support strut.
MSRP $26.15 CAD
$23.01 CAD
MSRP $26.15 CAD
$23.01 CAD
4
Outer Rail Bracket GM
GM Positions: Right
Notes: PARTS: Part included with outer rail.
Description: Support strut.
MSRP $26.11 CAD
$23.01 CAD
MSRP $26.11 CAD
$23.01 CAD
5
MSRP $110.63 CAD
$78.04 CAD
5
MSRP $110.63 CAD
$78.04 CAD
6
Rail Extension GM
GM Positions: Left
Notes: PARTS: Part included with radiator support with fender structure.
MSRP $693.96 CAD
$532.43 CAD
MSRP $693.96 CAD
$532.43 CAD
6
Rail Extension GM
GM Positions: Right
Notes: PARTS: Part included with radiator support with fender structure.
MSRP $675.71 CAD
$518.46 CAD
MSRP $675.71 CAD
$518.46 CAD
7
Rail Extension Bracket GM
GM Positions: Left
Notes: PARTS: Part included with rail extension.
Description: Lh only.
MSRP $23.68 CAD
$23.13 CAD
MSRP $23.68 CAD
$23.13 CAD
9
Inner Rail Bracket GM
GM Positions: Right
Description: Rh only. Right side only.
MSRP $23.81 CAD
$23.13 CAD
MSRP $23.81 CAD
$23.13 CAD
11
MSRP $30.71 CAD
$25.34 CAD
12
Frame Side Member Reinforcement GM
GM Positions: Left
Description: Inner rail #1.
MSRP $23.22 CAD
$22.58 CAD
MSRP $23.22 CAD
$22.58 CAD
12
Frame Side Member Reinforcement GM
GM Positions: Right
Description: Inner rail #1.
MSRP $23.11 CAD
$22.58 CAD
MSRP $23.11 CAD
$22.58 CAD
13
Frame Side Member Reinforcement GM
GM Positions: Left
Description: Inner rail #2.
MSRP $23.11 CAD
$22.58 CAD
MSRP $23.11 CAD
$22.58 CAD
13
Frame Side Member Reinforcement GM
GM Positions: Right
Description: Inner rail #2.
MSRP $23.11 CAD
$22.58 CAD
MSRP $23.11 CAD
$22.58 CAD
14
Frame Side Member Reinforcement GM
GM Positions: Left
Description: Inner rail #3.
MSRP $23.11 CAD
$22.58 CAD
MSRP $23.11 CAD
$22.58 CAD
14
Frame Side Member Reinforcement GM
GM Positions: Right
Description: Inner rail #3.
MSRP $23.14 CAD
$22.58 CAD
MSRP $23.14 CAD
$22.58 CAD
15
Frame Side Member Reinforcement GM
GM Positions: Right
Description: Inner rail #4.
MSRP $23.15 CAD
$22.58 CAD
MSRP $23.15 CAD
$22.58 CAD
16
MSRP $5.95 CAD
$5.81 CAD
16
MSRP $23.78 CAD
$23.13 CAD
No.
Part # / Description / Price
Price
6
Rail Extension GM
GM Positions: Left
Notes: PARTS: Part included with radiator support with fender structure
MSRP $693.96 CAD
$532.43 CAD
MSRP $693.96 CAD
$532.43 CAD