---
product_id: 358647691
title: "Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5"
brand: "thebigdeals"
price: "฿5426"
currency: THB
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.th/products/358647691-distributor-cap-rotor-for-mercruiser-4-3l-v6-thunderbolt-iv
store_origin: TH
region: Thailand
---

# Low resistance brass OE standard fit Easy installation Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5

**Brand:** thebigdeals
**Price:** ฿5426
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your Ride with Precision!

## Quick Answers

- **What is this?** Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5 by thebigdeals
- **How much does it cost?** ฿5426 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/358647691-distributor-cap-rotor-for-mercruiser-4-3l-v6-thunderbolt-iv)

## Best For

- thebigdeals enthusiasts

## Why This Product

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

## Key Features

- • **Quality Assurance:** Manufactured to OE standards for reliability and performance.
- • **Superior Material:** Crafted from robust PBT and PET plastic for ultimate insulation.
- • **Effortless Installation:** Designed for direct installation, no modifications needed.
- • **Unmatched Compatibility:** Seamlessly fits MerCruiser 4.3L V6 engines from the 1980s to early 2000s.
- • **Optimal Voltage Transfer:** Low resistance brass ensures maximum voltage efficiency.

## Overview

The Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV and V HEI Ignition Systems is engineered for optimal performance and compatibility. Constructed from high-quality PBT and PET plastic, it ensures durability and insulation while featuring low resistance brass for superior voltage transfer. Designed for easy, direct installation, this cap rotor meets OE standards, making it the perfect choice for enthusiasts and professionals alike.

## Description

Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5

## Features

- Material: The distributor is constructed with strong PBT and PET plastic and it is totally insulated. And low resistance brass is used for maximum voltage transfer.
- Easy Installation:Direct Installation: This discribution cap set is designed and manufactured with OE standard. All specifications matches with your vehicle. It can be replacd directly.
- Compatibility: This distributor cap is compatible with MerCruiser 4.3L V6 Engines with Thunderbolt IV and V HEI ignitions, 1980s to early 2000s. You can check the fitment bar above for more detailed info.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | THEBIGDEALS |
| Brand | THEBIGDEALS |
| Package Dimensions | 20.29 x 15.7 x 12.7 cm; 399 g |
| Manufacturer reference | T3121ID |
| Manufacturer part number | T3121ID |
| Item Weight | 399 g |

## Images

![Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5 - Image 1](https://m.media-amazon.com/images/I/51B5NcpT6JL.jpg)
![Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5 - Image 2](https://m.media-amazon.com/images/I/61dr-p5R65L.jpg)
![Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5 - Image 3](https://m.media-amazon.com/images/I/61Avd8wLneL.jpg)
![Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5 - Image 4](https://m.media-amazon.com/images/I/61oj5VLNWBL.jpg)
![Distributor Cap Rotor for MerCruiser 4.3L V6 Thunderbolt IV V HEI Ignition Systems 18-5274 815407Q5 - Image 5](https://m.media-amazon.com/images/I/61JcpdpZVqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Works great
  

*by W***. on Reviewed in the United States on 21 July 2022*

Good quality,,, thanks

### ⭐⭐⭐⭐⭐ 







  
  
    Perfect fit
  

*by A***R on Reviewed in the United States on 16 June 2021*

Cap and rotor worked perfect on my 4.3 with thunderbolt ignition

### ⭐⭐⭐⭐⭐ 







  
  
    Fit Perfect
  

*by M***N on Reviewed in the United States on 30 December 2021*

I put it in my boat 2007 Tahoe 190 with a 4.4L Mercruiser engine. It matched perfectly and worked perfectly.  I would buy again.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/358647691-distributor-cap-rotor-for-mercruiser-4-3l-v6-thunderbolt-iv](https://www.desertcart.co.th/products/358647691-distributor-cap-rotor-for-mercruiser-4-3l-v6-thunderbolt-iv)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-24*