---
id: faq-0122
title: "Are aftermarket parts and modifications covered under warranty?"
category: faq
subtopic: warranty-and-protection
page_type: faq
source_url: "https://www.castlevwdownersgrove.com"
tags: ["warranty", "modifications", "aftermarket"]
questions:
  - "Does warranty cover parts I add myself?"
  - "Will my warranty be void if I modify my VW?"
  - "What about custom parts and accessories?"
related: [genuine-parts, warranty-coverage-details]
dealer: Castle Volkswagen of Downers Grove
---

Aftermarket or custom modifications you add to your Volkswagen can affect your warranty coverage-it depends on what you install and how. Generally, the factory warranty covers the original VW parts and systems, but modifications or non-genuine parts may not be included, and they could affect coverage of related components.

That said, genuine Volkswagen accessories and parts from Castle Volkswagen of Downers Grove are designed to work seamlessly with your warranty. If you're thinking about upgrades or customization, our parts and service teams can advise you on what keeps your warranty intact. Call (630) 598-9986 to discuss your ideas-we'll make sure you stay protected.