Rear Floor & Rails for 2025 Cadillac XT4
No.
Part # / Description / Price
Price
1
MSRP $559.50
$360.64
3
Passenger Side Rear Compartment Floor Panel Rail 
GM
GM Positions: Right
Description: Rails & components, rear compartment panel, rear. Helps strengthen and support your vehicle's underbody
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $38.03
$32.07
MSRP $38.03
$32.07
3
Driver Side Rear Compartment Floor Panel Rail GM
GM Positions: Left
Description: Rails & components, rear compartment panel, rear. Helps strengthen and support your vehicle's underbody
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $38.03
$32.07
MSRP $38.03
$32.07
4
Rail Support Bracket GM
GM Positions: Right
Description: 2021-25, rails & components.
MSRP $44.04
$37.14
MSRP $44.04
$37.14
8
Inner Wheelhouse Brace GM
GM Positions: Right
Description: 2021-25, rails & components.
MSRP $24.98
$21.07
MSRP $24.98
$21.07
8
Driver Side Rear Compartment Panel Brace GM
GM Positions: Left
Description: Rails & components. Helps strengthen and support trunk floor panels
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $53.30
$38.53
MSRP $53.30
$38.53
9
Driver Side Floor Panel Number 6 Cross Bar Extension GM
GM Positions: Left
Description: Rails & components, upper. Lower. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $23.90
$20.16
MSRP $23.90
$20.16
9
Passenger Side Number 6 Floor Panel Cross Bar Extension GM
GM Positions: Right
Description: Rails & components, upper. Lower. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $25.70
$21.67
MSRP $25.70
$21.67
10
Extension GM
GM Positions: Right
Description: 2021-25, rails & components, lower. 2021-25, rails & components, upper.
MSRP $86.20
$62.32
MSRP $86.20
$62.32
10
Driver Side Floor Panel Number 6 Cross Bar Extension GM
GM Positions: Left
Description: Rails & components, lower. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $40.69
$34.31
MSRP $40.69
$34.31
11
Extension Reinforcement GM
GM Positions: Right
Description: 2021-25, rails & components.
MSRP $46.76
$39.44
MSRP $46.76
$39.44
11
Driver Side Underbody Rear Side Rail Rear Reinforcement GM
GM Positions: Left
Description: Rails & components. Helps secure and support your vehicle's underbody rail
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $49.05
$41.37
MSRP $49.05
$41.37
12
Spring Seat GM
GM Positions: Left
Description: Sportback, 5-link suspension. Tourx. 2021-25, rails & components.
MSRP $40.60
$34.24
MSRP $40.60
$34.24
12
Spring Seat GM
GM Positions: Right
Description: Sportback, 5-link suspension. Tourx. 2021-25, rails & components.
MSRP $41.87
$35.31
MSRP $41.87
$35.31
14
Lower Rail Extension GM
GM Positions: Right
Description: 2021-25, rails & components, inner.
MSRP $51.84
$37.48
MSRP $51.84
$37.48
15
Driver Side Underbody Rear Side Rail Extension GM
GM Positions: Left
Description: Rails & components, outer. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $37.60
$31.71
MSRP $37.60
$31.71
15
Lower Rail Extension GM
GM Positions: Right
Description: 2021-25, rails & components, outer.
MSRP $37.60
$31.71
MSRP $37.60
$31.71
16
Driver Side Underbody Rear Side Rail Rear Reinforcement GM
GM Positions: Left
Description: Rails & components. Helps secure and support your vehicle's underbody rail
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $15.52
$13.09
MSRP $15.52
$13.09
17
Driver Side Underbody Rear Side Rail Extension GM
GM Positions: Left
Description: Rails & components. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $77.90
$56.32
MSRP $77.90
$56.32
18
MSRP $55.59
$40.02
No.
Part # / Description / Price
Price
2
Spare Wheel Carrier Bracket GM
GM Notes: PARTS: Part included with rear floor pan.
Description: Floor & components. Helps align and secure your vehicle's spare wheel
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $20.90
$17.63
MSRP $20.90
$17.63
4
MSRP $95.33
$68.92
5
Passenger Side Floor Panel Number 5 Cross Bar GM
GM Description: Floor & components, upper. Helps support and strengthen your vehicle's floor panel
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
.
Collision parts are designed to help promote proper and safe repair
MSRP $117.58
$81.45
MSRP $117.58
$81.45
6
Driver Side Floor Panel Number 5 Cross Bar Extension GM
GM Positions: Left
Notes: PARTS: Part included with center cross member, upper.
Description: Floor & components, front. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $19.72
$16.63
MSRP $19.72
$16.63
6
Extension GM
GM Positions: Right
Notes: PARTS: Part included with center cross member, upper.
Description: 2021-25, floor & components, front.
MSRP $21.50
$18.13
MSRP $21.50
$18.13
7
Extension GM
GM Positions: Left
Notes: PARTS: Part included with center cross member, upper.
Description: Floor & components, center.
MSRP $19.55
$16.49
MSRP $19.55
$16.49
7
Extension GM
GM Positions: Right
Notes: PARTS: Part included with center cross member, upper.
Description: Floor & components, center.
MSRP $51.46
$37.20
MSRP $51.46
$37.20
8
Driver Side Floor Panel Number 5 Cross Bar Extension GM
GM Positions: Left
Notes: PARTS: Part included with center cross member, upper.
Description: Floor & components, rear. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $22.51
$18.98
MSRP $22.51
$18.98
8
Extension GM
GM Positions: Right
Notes: PARTS: Part included with center cross member, upper.
Description: 2021-25, floor & components, rear.
MSRP $72.41
$52.34
MSRP $72.41
$52.34
9
Driver Side Floor Panel Number 5 Cross Bar Reinforcement GM
GM Positions: Left
Notes: PARTS: Part included with center cross member, upper.
Description: Floor & components. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $44.06
$37.16
MSRP $44.06
$37.16
9
Extension Reinforcement GM
GM Positions: Right
Notes: PARTS: Part included with center cross member, upper.
Description: 2021-25, floor & components.
MSRP $48.02
$40.50
MSRP $48.02
$40.50