Allison External Spin On Filter

The ACDelco GM Original Equipment Trailer Tow Relay functions as an electro-mechanical switch containing a coil and set of connection points, and is a GM-recommended replacement for your vehicle's original components. This trailer tow relay provides a variety of control functions for a vehicle's trailer brake system, and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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GM Genuine Parts 20904439 Trailer Brake Continue Relay Assembly;