2025-10-13

Cast Rear Under Body (1-Piece)

Correction code: 10102101202 NOTE: Unless explicitly stated in the procedure, the above correction code includes all Collision Repair work required to perform this procedure, including the linked Collision Repair procedures. Do not stack Collision Repair correction codes unless explicitly told to do so. Add any associated mechanical procedures needed to perform this procedure.

Repair Information

Review all collision repair general practices and safety documentation and wear the appropriate PPE (Personal Protective Equipment) before beginning this procedure.
Depending on the damage to this component, it may be possible to repair this component. Refer to Cast Rear Under Body (1–Piece) Repair Guidelines for more information.
Properly mount the vehicle on a frame bench when performing this procedure.

Parts List


Quantity	Description	Image / Notes
1	CAST RUB-SP E-COATED (Rear Under Body 1–Piece)
1	ASSEMBLY - EXTENSION REAR WHEEL HOUSE - LEFT HAND SERVICE E-COATED (Wheelhouse Extension – Front – LH)
1	ASSEMBLY - EXTENSION REAR WHEELHOUSE - RIGHT HAND SERVICE E-COATED (Wheelhouse Extension – Front – RH)
21	High Strength Structural Rivet, 6.5 mm
12	Rivet, 4.8 mm
12	Bolt , BOLT&WSHR[FL],M8-1.25x32	Tesla part number 1119448-00-A.
2	NUT AND WASHER[FL] - HF - M8-1.25 - [10] - ZINC NICKEL	Tesla part number 1118837-00-A.
2	SEMS,[FL],HX,M8x23.5,[109],G1009,PTC	Tesla part number 1063260-00-C.

When ordering parts, refer to the Parts Catalog and enter the VIN of the vehicle being repaired to find the correct parts (and the part numbers) for the vehicle. Alternatively, use the search function in the Parts Catalog to find a specific part for the vehicle.

Repair Procedure

Remove the LH and RH Rear Panel Side Assembly (for 1-Piece Cast Under Body).
Remove the LH and RH Wing Bracket (Lower).
Create an access window in the Wheelhouse Extension (Front).
- A = 50 mm.
- B = 130 mm.
- C = 75 mm.
- D = 21 mm.
Cut the new Wheelhouse Extension components to create LH and RH access window covers.
The finished cover should be approximately 32 mm. wider and 10 mm. taller than the access window. Black dashed lines indicate the the access window.
Note
When positioned poperly, the cover overlaps the top, bottom, and inboard edges of the access window by 5 mm . The cover also overlaps the outboard edge of the access window by 27 mm.
- E = 82 mm.
- F = 140 mm.
Remove the Rivnut from the new component.
Rivnut
Remove the original component.

or Factory Spot Welds

or Factory SPRs

Rivnut

or Bolts
Prepare for installation.
- or Bolts
- Nut
Install the nut (Tesla part number 1118837-00-A) though the B Pillar hole where the seat belt retractor is located (indicated in red).
Prepare for installation.
Note
A red X indicates a location where a factory-installed fastener is not being replaced.
or Rivets, 4.8 mm
- G = 79 mm.
- H = 24 mm.
- I = 28 mm.
- J = 26 mm.
or High Strength Structural Rivets, 6.5 mm
- K = 17 mm.
or Bolts
Note
The bolt in circled in red is replaced only if it was present on the original component.
Apply structural adhesive to the mating surfaces on the vehicle and the new component or components.
Install the new component or components.
Torque bolts as follows:
- SEMS,[FL],HX,M8x23.5,[109],G1009,PTC bolt and washer (Tesla part number 1063260-00-C) installed horizontally in the Sill: 31 Nm.
- Bolts vertically installed in the Sill: 35 Nm.
- Bolts horizontally installed in the Sill: 31 Nm.
Install the LH and RH Rear Rail End Plate (For 1–Piece Cast Under Body).
Install the LH and RH Wing Bracket (Lower).
Prepare to install the Access Window Covers.

or Rivets, 4.8 mm

Note
When positioned poperly, the cover overlaps the top, bottom, and inboard edges of the access window by 5 mm . The cover also overlaps the outboard edge of the access window by 27 mm.
Apply structural adhesive to the mating surfaces on the vehicle and the Access Window Covers.
Install the Access Window Covers.
Install the Rear Panel Side Assembly (for 1-Piece Cast Under Body).
Perform any necessary post-repair operations.