PPE Diesel DEF Fill Cap Billet Aluminum

2007–2025 Dodge Ram, 2014–2022 Jeep Grand Cherokee, 2020–2023 Jeep Wrangler, 2021–2023 Jeep Gladiator Diesel Models

Part #: 273005000

Overview

The PPE Diesel DEF Fill Cap is a precision-engineered replacement designed to protect the Diesel Exhaust Fluid (DEF) system on a wide range of diesel-powered Dodge Ram and Jeep vehicles. Crafted for models from 2007 through 2025, this billet aluminum fill cap provides a secure, contaminant-resistant seal that helps maintain the integrity of your DEF system. It is an essential upgrade for diesel truck and SUV owners who prioritize durability, reliability, and optimal emissions control.

Whether you drive daily, tackle off-road trails, or operate professionally, the PPE Diesel DEF Fill Cap offers peace of mind by preventing dust, dirt, moisture, and other contaminants from entering the DEF tank during refueling. This helps ensure your vehicle’s emissions system functions efficiently and your diesel engine performs at its best.

Key Features

Engineered for strength, durability, and ease of use, the PPE Diesel DEF Fill Cap delivers several important benefits:

• Precision CNC-machined from billet aluminum for superior strength and corrosion resistance
• High-quality Viton O-ring seal provides an airtight, leak-proof fit to keep contaminants out
• Integrated neodymium magnet on the bottom for convenient attachment to body panels during refueling
• Direct-fit design for Dodge Ram (2007–2025), Jeep Wrangler (2020–2023), Jeep Gladiator (2021–2023), and Jeep Grand Cherokee (2014–2022)
• Durable finish resists wear and environmental damage for long-lasting use
• Simple, tool-free installation and removal for hassle-free maintenance
• Meets or exceeds OEM specifications for fit and function

Construction & Design

The PPE Diesel DEF Fill Cap is crafted from premium billet aluminum, chosen for its exceptional strength-to-weight ratio and excellent corrosion resistance. The CNC machining process ensures precise dimensions and a perfect fit, eliminating the risk of leaks or loose sealing. The Viton O-ring seal is specifically engineered to withstand exposure to DEF fluid and harsh environmental conditions, maintaining a reliable airtight barrier over time.

Additionally, the integrated neodymium magnet offers a practical solution for holding the cap securely on the vehicle’s body during refueling, preventing loss or damage. The cap’s durable finish protects against wear, UV exposure, and environmental damage, ensuring long-lasting performance in demanding conditions.

Installation & Fitment

Installing the PPE Diesel DEF Fill Cap is straightforward and requires no special tools or modifications. Simply remove the factory DEF fill cap and replace it with this billet aluminum cap. Its direct-fit design guarantees compatibility with the DEF filler necks of the following diesel models:

• 2007–2010 Dodge Ram 6.7L Diesel
• 2011–2018 Ram 2500 and 3500 6.7L Diesel
• 2014–2018 Jeep Grand Cherokee 3.0L EcoDiesel
• 2014–2018 Ram 1500 3.0L EcoDiesel
• 2019–2025 Ram 2500 and 3500 6.7L Diesel
• 2020–2023 Jeep Wrangler 3.0L EcoDiesel
• 2020–2023 Ram 1500 3.0L EcoDiesel
• 2021–2023 Jeep Gladiator 3.0L EcoDiesel

The secure Viton O-ring seal ensures a tight fit that prevents leaks and contamination, maintaining the cleanliness and efficiency of your DEF system.

What's Included

• One PPE billet aluminum Diesel DEF Fill Cap with Viton O-ring seal
• Integrated neodymium magnet for convenient cap storage during refueling
• Installation instructions

Ideal For

This Diesel DEF Fill Cap is ideal for diesel truck and SUV owners who want to maintain the cleanliness and efficiency of their DEF system. It is especially suited for those who frequently refuel in dusty or harsh environments, off-road enthusiasts, fleet operators, and anyone seeking a durable, long-lasting upgrade over the factory DEF fill cap. By protecting your DEF system from contaminants, this cap helps ensure your vehicle’s emissions control system operates at peak performance.

Pacific Performance Engineering (PPE) develops heavy-duty and performance upgrades for trucks and diesel platforms, including differential covers, transmission pans, oiling and cooling components, and other durability-minded parts. PPE products are built to handle heat, load, and power—ideal for tow rigs and performance builds that need stronger hardware and better fluid control.