---
product_id: 431282610
title: "GM Genuine Parts 12135037 Multi-Function Diode"
brand: "gm genuine parts"
price: "€ 15.44"
currency: EUR
in_stock: true
category: "Gm Genuine Parts"
url: https://www.desertcart.pt/products/431282610-gm-genuine-parts-12135037-multi-function-diode
store_origin: PT
region: Portugal
---

# Vehicle-specific installation Precision-engineered fit Tested to GM OE standards GM Genuine Parts 12135037 Multi-Function Diode

**Brand:** gm genuine parts
**Price:** € 15.44
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your GM running like new—because genuine matters.

## Quick Answers

- **What is this?** GM Genuine Parts 12135037 Multi-Function Diode by gm genuine parts
- **How much does it cost?** € 15.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/431282610-gm-genuine-parts-12135037-multi-function-diode)

## Best For

- gm genuine parts enthusiasts

## Why This Product

- Trusted gm genuine parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Lightweight and machined to perfection, this diode packs performance into a sleek 1.3 x 1.1 x 0.3 inch frame.
- • **Trusted by Thousands:** Rated 4.6 stars by over 330 customers—join the community of savvy vehicle maintainers.
- • **Effortless Installation:** Precision fit ensures quick, hassle-free replacement—get back on the road faster.
- • **Seamless OEM Compatibility:** Designed exclusively for Chevrolet, Buick, GMC, and Cadillac for flawless integration.
- • **Uncompromising Quality Assurance:** Tested and warranted by GM to meet original equipment standards for lasting reliability.

## Overview

The GM Genuine Parts 12135037 Multi-Function Diode is a precision-engineered, vehicle-specific component designed to meet GM Original Equipment standards. Lightweight and compact, it ensures seamless installation and reliable performance for Chevrolet, Buick, GMC, and Cadillac vehicles, backed by a strong customer satisfaction rating.

## Description

Maintain your Chevrolet, Buick, GMC, or Cadillac vehicle with a Genuine GM Parts Multi Purpose Inline Diode. Only Genuine GM Parts are tested to meet GM Original Equipment standards and are designed specifically to fit your vehicle. WARNING: Cancer and Reproductive Harm

## Features

- Designed, engineered, tested, and warranted for GM vehicles.Fit Type: Vehicle Specific
- Precise fit for ease of installation
- For proper installation, locate your nearest GM dealer, independent service center, or body shop

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08WHLPQR3 |
| Best Sellers Rank | #85,767 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Alternator Diodes |
| Brand | GM GENUINE PARTS |
| Customer Reviews | 4.6 4.6 out of 5 stars (334) |
| Date First Available | February 12, 2021 |
| Exterior | Machined |
| Item Weight | 0.352 ounces |
| Item model number | 12135037 |
| Manufacturer | GM Genuine Parts |
| Manufacturer Part Number | 12135037 |
| Model | GM Original Equipment |
| Product Dimensions | 1.3 x 1.1 x 0.3 inches |

## Images

![GM Genuine Parts 12135037 Multi-Function Diode - Image 1](https://m.media-amazon.com/images/I/41SeXKpp+iL.jpg)

## Questions & Answers

**Q: When do spark plug wires need to be replaced?**
A: The lifespan of spark plug wires varies based on factors including the climate and driving habits, but they generally last about 60,000-100,00 miles. Periodic replacement helps maintain the engine’s performance.

**Q: What are signs spark plug wires should be replaced?**
A: Common signs of wear can include a rough-running engine, possible misfires and even hard starting. Acceleration can be affected and fuel economy can decline. Visually, cracks or fraying of the wires are signs replacement is needed.

**Q: Are all spark plug wires the same?**
A: No. Material composition and design can vary widely, resulting in varying levels of conductivity, durability and electrical interference suppression. GM Genuine Parts and ACDelco Gold Spark Plug Wires meet GM factory specifications.

**Q: Do battery cables need to be replaced often?**
A: Generally, battery cables don't need periodic replacement, but they are subject to corrosion and other forces of wear that can affect their performance. This is especially true in climates of high humidity, where the roads are salted in the winter.

**Q: What are signs of the battery cables need to be replaced?**
A: If loose connections are ruled out, hard starting, a failure to start and other intermittent electrical issues are common signs the battery cables should be checked for corrosion and other signs of wear.

## Frequently Bought Together

- GM Genuine Parts 12135037 Multi-Function Diode
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- MUYI 6 Pack Inline Fuse Holder - 14AWG Gauge Wire Pigtail Mini Blade Fuse Holder with 15A Mini Blade Fuses ATM

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-02*