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​​13500120 Relay Set of 2-4 Pin 12V SPDT Automotive Relay OEM 15-51279 Compatible for Buick, Chevrolet, Cadillac, GMC Acadia (Fans, Accessories Control)​ | Repair and Installation Guide

$12.99

SKU: C-B0FBSB9FFL Category:

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  • OEM Replacement​​: Direct replacement for GM part #13500120 / 15-51279, ensuring 100% compatibility with Buick, Cadillac, Chevrolet, and GMC vehicles.
  • Precision Fit for GM Models​​: Specifically engineered for Buick Regal/Allure/Cascada, Cadillac XT5, Chevrolet Malibu/Impala/Trax, GMC Acadia (2009-2023).
  • Reliable 12V High-Current Switching​​: Handles up to 20A loads for critical systems like cooling fans, headlights, and accessory circuits.
  • Plug-and-Play Installation​​: 4-pin socket design enables tool-free replacement in under 5 minutes—no wiring modifications needed.
  • Value Pack of 2​​: Includes two relays for backup or multi-component replacement, saving cost vs. single-unit purchases.

Before you order
  • Confirm the part number, position, dimensions, and connector details shown on this page.
  • Compare the listing with the part currently installed on your vehicle.

Description

Review this item in the context of the repair, installation access, nearby parts, and the result the completed job is intended to achieve.

Brand: Casalytics
  • Package Dimensions

    :

    2.75 x 1.57 x 1.57 inches; 0.96 ounces
  • Date First Available

    :

    June 3, 2025
  • Manufacturer

    :

    Casalytics
  • ASIN

    :

    B0FBSB9FFL
  • Best Sellers Rank: #417,367 in Automotive (See Top 100 in Automotive)
    • #792 in Automotive Replacement Accessory Power Relays

OEM-Compatible 13500120 4-Pin Relay Set restores factory performance for GM vehicle electrical systems.

Vehicle Compatibility:
For Buick: Allure (2005-2009), Cascada (2016-2019), Regal (2009-2020)
For Cadillac: XT5 (2017-2023)
For Chevrolet: Impala (2014-2020), Malibu (2016-2023), Trax (2013-2022)
For GMC: Acadia (2017-2023)

Technical Specifications:
OEM Part Numbers: 13500120, 15-51279
Type: SPDT (Single Pole Double Throw)
Voltage: 12VDC
Contact Rating: 20A
Terminal Pins: 4
Color: Gray
Temperature Range: -40°C to 85°C

Primary Applications:
Engine cooling fan control modules
Headlight and fog light circuits
Aftermarket accessory power systems
HVAC blower motor relays

Installation Note: Locate factory relay box in engine bay, match pin orientation, press firmly until seated

Package Contents: 2 x 13500120 Relays

Product facts

Specifications

Canonical product
MP-US-B0FBSB9FFL
Source product ID
B0FBSB9FFL
Category
Replacement Parts / Switches & Relays / Relays / Accessory Power
Available images
5
Referenced part numbers
15-51279

Vehicle information

Available fitment details

Listing compatibility notes

  • Precision Fit for GM Models​​: Specifically engineered for Buick Regal/Allure/Cascada, Cadillac XT5, Chevrolet Malibu/Impala/Trax, GMC Acadia (2009-2023).

Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.

Repair scenarios, installation, companion parts, and use outcomes

Buying guidance

Quick decision

Review this accessory power in the context of the repair and the surrounding components.

Repair scenario

  • Identify the symptom and confirm that this is the component required by the repair.
  • Inspect nearby connectors, fasteners, and mating surfaces before installation.

Installation notes

  • Use the listing instructions when present and follow the vehicle service procedure.
  • Professional installation may be appropriate when the repair requires special tools or calibration.

Companion parts

  • Inspect nearby fasteners, connectors, seals, fluids, and wear items before starting the repair.
  • Use the service procedure and the visible package contents to identify any additional parts or tools required.

Before you buy

  • Verify the referenced part number: 15-51279.
  • Compare the listing title, photos, package contents, and specifications with the part being replaced.
  • Confirm vehicle compatibility and installation requirements before ordering.

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