2015-2023 Chrysler 300 Rear Spoiler: Fitment, Installation & Upgrade Guide

Symptoms of a Failing Rear Spoiler

Since a rear spoiler is a static body part, "failure" relates to its physical condition and security, not mechanical or electrical function. Here are the most common issues owners encounter:

• Physical Damage: Cracks, chips, and deep scratches are common, often resulting from minor impacts or debris. Damage is most likely to occur on the leading edge and corners.
• Paint and Clear Coat Failure: Over time, exposure to sun and weather can cause the paint to fade and the clear coat to peel or delaminate. This is a cosmetic issue but can lead to the underlying material degrading.
• Loose Spoiler or Rattling Noises: The mounting hardware can loosen over time, causing the spoiler to rattle or feel loose to the touch. This is a warning sign that the spoiler could detach.
• Water Leaks into Trunk: If the gaskets or sealant around the mounting bolts fail, water can seep into the trunk lid and potentially into the trunk itself. This can cause rust and damage to the trunk's interior lining.

Known Issues, TSBs, and Recalls

As of this writing, there are no specific recalls or Technical Service Bulletins (TSBs) for the rear spoiler on the 2015-2023 Chrysler 300. However, other FCA vehicles, like the Dodge Durango, have had recalls for spoilers detaching from the vehicle. A loose spoiler should be addressed immediately, as it can become a serious road hazard if it separates from the vehicle while driving.

Buying a Used Rear Spoiler: A Step-by-Step Guide

A used OEM spoiler is often a better choice than a cheap aftermarket one due to superior fit, material quality, and durability. Here’s what to check before you buy.

1. Physical Inspection Checklist

• Check for Cracks: Carefully inspect the entire surface, paying close attention to the mounting points. Stress cracks can form around the bolt holes. Avoid any spoiler with visible cracks in the main body.
• Examine Mounting Points: Ensure all mounting studs and bolt holes are intact and not stripped, broken, or cracked. Repairing these is difficult and often not worth the effort.
• Look for Warping: Lay the spoiler on a flat surface to check for any twisting or warping. A warped spoiler will not sit flush on the trunk lid and will be difficult to seal properly.
• Assess the Finish: Expect a used spoiler to have some cosmetic wear. Minor scratches can be fixed during repainting, but deep gouges that penetrate the plastic may require more extensive bodywork.

2. Verifying Fitment

Spoilers for the 2015-2023 Chrysler 300 are specific to this generation. While some spoilers from 2011-2014 models may look similar, their mounting points or curvature might differ. Always confirm the part is from a 2015-2023 model. Also, be aware that different trim levels (e.g., 300S vs. 300C) may have different spoiler styles and mounting hole patterns.

Cost Comparison

Installation Guide Overview

Installing a rear spoiler is a manageable DIY project, but the difficulty varies significantly depending on whether your trunk lid is pre-drilled.

• Difficulty: 2/5 (for a direct swap); 4/5 (if drilling is required)
• Estimated Time: 1 hour (swap); 2-3 hours (drilling)

For a Direct Swap (Replacing an existing spoiler):

1. Open the trunk and remove the inner trunk lid liner by pulling out the plastic retaining clips.
2. Locate the nuts holding the old spoiler. They are typically 10mm or T20 Torx bolts.
3. Have a helper hold the spoiler while you remove the nuts.
4. Carefully lift the old spoiler off. Clean the surface thoroughly, removing any old gasket material or adhesive residue.
5. Install the new spoiler using new gaskets or a thin bead of automotive-grade silicone sealant around the bolt holes to prevent leaks.
6. Tighten the nuts, being careful not to overtighten and crack the spoiler. Reinstall the trunk liner.

For a New Installation (Drilling Required):

Many aftermarket and OEM spoilers come with templates or guide tools to help you mark the drill locations.

1. Thoroughly clean the trunk lid surface.
2. Using the provided template or by carefully measuring, mark the exact locations for the holes. Many DIY installers use masking tape to protect the paint and provide a surface to mark on.
3. Double and triple-check your measurements. Measure from the edges of the trunk lid to ensure the spoiler will be perfectly centered.
4. Use a center punch to create a small indent at each mark to prevent the drill bit from wandering.
5. Start with a small pilot drill bit and then step up to the final required size.
6. Apply touch-up paint or a clear coat to the bare metal of the drilled holes to prevent rust.
7. Proceed with the installation as described in the swap section, ensuring a watertight seal.

Frequently Asked Questions