7-blade and 4-flat trailer connector, replacement reference 40975

7-blade and 4-flat trailer connector, replacement reference 40975

This vehicle-side trailer connector puts a 7-blade outlet and a 4-flat connection in one black housing. It is an unbranded replacement listed against reference 40975, with an ABS body and brass contacts. Use it to replace a matching rear towing connector after checking the vehicle harness and mounting opening.

Check the connection behind the socket

The trailer plug shape is only one part of the match. Compare the rear harness connection, locking features, housing shape and mounting position with the old socket. The listed 40975 reference does not establish fit on every vehicle with a 7-way trailer outlet. No vehicle-year fit list or rear connector dimensions are supplied for this item.

The 7-blade and 4-flat connections provide different trailer interfaces. Available lighting, brake-control and auxiliary functions depend on the vehicle's wiring and equipment. Replacing the socket alone does not add a brake controller or activate circuits that are absent from the harness.

Socket supply and mounting pieces

The first image shows one dual-outlet connector with covers. A separate mounting bracket, loose installation hardware, wiring harness or relays are not shown. If the existing bracket or harness also needs replacement, confirm the required pieces separately before starting the repair.

Connector type

Vehicle-side 7-blade and 4-flat trailer connection

Listed reference

40975; check the original socket and rear harness connection

Listed materials

ABS housing and brass contacts

Shown supply

One black dual-outlet connector with covers

Installation position

Rear towing connector location with a matching harness and mount

Measurements to verify

Rear connector layout, locking features, mounting opening and clearance

Test each required trailer function

Inspect the existing harness terminals and mounting area before fitting the connector. After installation, test the connections with suitable test equipment and the vehicle's wiring information, including every function the trailer requires. Check that the harness locks securely and that the covers close when the outlets are unused. A damaged wire or missing circuit needs attention beyond replacing the socket.