GM Genuine Parts / ACDelco 13503102 Gray Multi-Purpose Relay

12-Volt, 35-Amp, Four-Terminal OE Replacement Relay

Supplied by Main Street Eshop’s OEM Replacement Parts Program

Restore reliable electrical control with the GM Genuine Parts / ACDelco 13503102 Gray Multi-Purpose Relay. This original-equipment relay is designed to connect or disconnect electrical power to a vehicle accessory when it receives a low-voltage control signal from a switch or control module.

The relay features a 12-volt operating voltage, 35-amp rating, four male blade terminals, and a durable plastic cover. It is designed to meet or exceed original equipment manufacturer specifications for compatible GM applications.

Some GM Genuine Parts may have previously appeared under the ACDelco GM Original Equipment name. This relay is supplied by Main Street Eshop through our OEM Replacement Parts Program, helping professional technicians, repair facilities, fleet operators, and vehicle owners source dependable application-specific replacement parts.

About GM Genuine Parts and ACDelco

GM Genuine Parts are original-equipment components installed during vehicle production or validated by General Motors for compatible GM vehicles. These parts are designed, engineered, and tested to rigorous GM standards.

Some components now labeled GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment products. ACDelco is a long-established General Motors parts brand offering electrical, engine-management, braking, suspension, maintenance, fuel-system, and other replacement components.

Part number 13503102 is designed for specific electrical applications and should be matched by part number and vehicle application rather than appearance alone.

About Main Street Eshop

Main Street Eshop supplies automotive replacement parts, performance components, shop supplies, RV products, electrical parts, and motorsports equipment for professional and DIY customers.

Through our OEM Replacement Parts Program, Main Street Eshop offers vehicle-specific replacement components from established manufacturers such as GM Genuine Parts and ACDelco. The program is designed to help customers locate properly matched parts for maintenance, diagnosis, and repair.

Product Features

✔ GM Genuine Parts / ACDelco multi-purpose wiring relay

✔ Part number 13503102

✔ Gray relay housing

✔ Helps connect or disconnect power to vehicle accessories

✔ Activated by a low-voltage control signal

✔ 12-volt electrical design

✔ 35-amp amperage rating

✔ Four male blade terminals

✔ Plastic cover construction

✔ Designed for bracket mounting

✔ Meets or exceeds original equipment manufacturer specifications

✔ No programming required

✔ Vehicle-specific OE replacement

Features and Benefits

Product Specifications

Brand: GM Genuine Parts / ACDelco GM Original Equipment

Part Number: 13503102

Product Type: Multi-Purpose Wiring Relay

Color: Gray

Voltage: 12 VDC

Amperage Rating: 35 A

Terminal Quantity: 4

Terminal Type: Blade

Terminal Gender: Male

Connector Quantity: 1

Connector Gender: Female

Wire Quantity: 0

Cover Material: Plastic

Mounting Type: Bracket

Mounting Bracket Included: No

Mounting Hardware Included: No

Programming Required: No

Meets or Exceeds OE Specifications: Yes

Length: 3 in

Width: 2 in

Height: 2 in

Weight: 0.1 lb

Common Relay Functions

Depending on the vehicle and installation position, a multi-purpose relay may be used to control various electrical accessories or systems.

The supplied fitment data lists this relay across a very large range of GM passenger cars, trucks, SUVs, vans, commercial chassis, and medium-duty vehicles. However, the specific circuit or position can vary by vehicle.

Possible relay-controlled systems may differ between applications, so buyers should confirm the required part number using the vehicle’s service information, relay-box diagram, or the number printed on the original relay.

Vehicle Fitment Overview

The supplied application catalog includes select models from the following vehicle brands:

Buick

Applications include select years and configurations of:

Cadillac

Applications include select years and configurations of:

Chevrolet

Applications include select years and configurations of:

GMC

Applications include select years and configurations of:

Additional GM-brand applications may also be listed in the complete manufacturer application catalog.

Fitment note: Because this relay is used in multiple electrical positions across many vehicles, year and model alone are not enough to confirm compatibility.

Package Contents

The following items are not included:

Buyer Notes

✔ Confirm part number 13503102 before ordering.

✔ Compare the terminal arrangement, amperage rating, housing shape, and relay number with the original component.

✔ Verify the vehicle year, make, model, trim, engine, electrical circuit, and relay-box position.

✔ This is a multi-purpose relay and may perform different functions depending on the vehicle.

✔ Do not purchase solely by relay color or physical appearance.

✔ Programming is not required according to the supplied specifications.

✔ Disconnect vehicle power and follow the correct service procedure before replacing electrical components.

✔ Professional diagnosis is recommended because a failed fuse, damaged wiring, poor ground, switch, control module, or accessory may produce symptoms similar to a failed relay.

✔ GM Genuine Parts / ACDelco product supplied by Main Street Eshop through our OEM Replacement Parts Program.

California Proposition 65 Warning

⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov