Torque Rating for M12 Hardware on Curt C13143 Hitch Installation on 2015 Lexus RX350

Updated 04/14/2025 | Published 04/30/2021

Products Featured in This Question

Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"

(601)

$205.19

ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit

(525)

$187.92

1-7/8" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 2,000 lbs

(2626)

$11.10

2" Hitch Ball - 1" Diameter x 2-1/8" Long Shank - Chrome - 7,500 lbs

(1360)

$11.31

Curt Ball Mount for 2" Hitches - 3/4" Rise, 2" Drop - 10-1/4" Long - 7,500 lbs

(3855)

$32.25

Pin and Clip for 2" and 2-1/2" Hitches - 5/8" Diameter x 3-1/4" Span

(895)

$16.14

Question:

How much torque is required to attach a curt hitch 13143 to a lexus2015 rx 350

asked by: Melroy

Helpful Expert Reply:

Because the torque ratings can change according to the nature of the hardware that Curt sources, we don't publish the torque ratings in case they should change. I've linked to the current installation instructions for the Curt # C13143, the correct torque ratings are listed on page 5, step # 13.

If you'll be towing with the hitch, you'll also need a trailer wiring harness like # 118252 for vehicles with the tow package or # 119250KIT for vehicles without the tow package. You'll also need a # D-4 ball mount and a trailer ball like # 19260 for a 1-7/8 or # 63845 for a 2 inch ball and a Hitch Pin and Clip item # PC3.

I've linked to some installation videos you might find helpful.