---
product_id: 136726185
title: "3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap"
brand: "road king truck parts"
price: "€ 79.18"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.hr/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel
store_origin: HR
region: Croatia
---

# 3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap

**Brand:** road king truck parts
**Price:** € 79.18
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap by road king truck parts
- **How much does it cost?** € 79.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel)

## Best For

- road king truck parts enthusiasts

## Why This Product

- Trusted road king truck parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap

## Features

- About this item
- Please measure the diameter of your current fuel cap or fuel tank fill tube prior to ordering     One 3 3/8” diameter, aluminum locking diesel fuel cap, each lock keyed different     Female fitting, Vented, 8 TPI NPSL, for diesel application only     Includes rubber gasket seal, safety chain, and bail. Supplied with 2 matching keys (keys are not available separately)     Approximate dimensions = Across threads cap 3 3/8”, Across threads filler neck 3 7/16”    ›See more product details

## Images

![3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap - Image 1](https://m.media-amazon.com/images/I/71orbQ2+IiL.jpg)
![3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap - Image 2](https://m.media-amazon.com/images/I/816QmOPrnZL.jpg)
![3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap - Image 3](https://m.media-amazon.com/images/I/81bQa++2hxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Perfect Solution to prevent theft
  

*by J***I on Reviewed in the United States on June 6, 2022*

The locks are wonky and don't let the keys out when the lock is in the unlocked position, but for the price, it's a small inconvenience to deal with when the peace of mind knowing your fuel is safe from theives.

### ⭐⭐⭐⭐⭐ 







  
  
    No leaks
  

*by C***  on Reviewed in the United States on June 6, 2022*

Fits just right

### ⭐⭐⭐ 







  
  
    Wrong item received
  

*by G***E on Reviewed in the United States on April 12, 2022*

2 times received wrong size. But its good product if you r lucky to get proper size

---

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**Shop now:** [https://www.desertcart.hr/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel](https://www.desertcart.hr/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-24*