Are you one of the proud owners of the legendary Dodge Challenger? Then you probably know what we are talking about. The trunk strut – a seemingly minor component – can seriously complicate the everyday use of your vehicle. Let's go through everything you need to know!
What exactly is a trunk strut and why is it important?
A trunk strut (also called a gas strut or trunk lid damper) is a component that ensures the trunk lid remains open in the correct position without the need to hold it up by hand. It is a hydraulic-gas component that operates on the principle of compressed gas enclosed inside the strut body.
Without a functioning strut, the trunk lid closes on its own, which can cause:
- ✋ Unpleasant injuries – the lid can fall on your head or back while loading luggage
- 📦 Complications when loading – the need to hold the lid with one hand
- 🔧 Damage to the paint and bodywork – repeated impacts of the lid can damage surrounding parts
Why do trunk struts on the Dodge Challenger fail so often?
The Dodge Challenger – whether the LC (2008–2014) or LA (2015–2024) version – is a vehicle with a relatively heavy trunk lid. This places increased demands on the struts and is one of the main reasons why their replacement is among the most common repairs on this model.
The main causes of premature wear include:
1. 🌡️ Temperature fluctuations
The gas filling inside the strut is very sensitive to temperature changes. Alternating freezing winters and hot summers – typical of the Central European climate – gradually reduces the gas pressure inside the strut.
2. ⏳ Natural aging of the seals
The rubber seals that keep the gas inside the strut harden, crack and stop performing their function over time. In vehicles older than 5–7 years, this is a completely natural process.
3. 🏋️ Weight of the trunk lid
The Challenger's trunk lid is significantly heavier than those of ordinary passenger cars due to the vehicle's robust construction. The struts are therefore constantly subjected to greater pressure and have a shorter service life.
4. 🌧️ Moisture and corrosion
The struts are located in an exposed position and are subjected to rain, snow and road salt. Corrosion of the outer casing can accelerate the degradation of the entire component.
How do I know when it's time to replace the trunk struts?
Replacing the struts should not be postponed. You can easily recognize the need for replacement by these symptoms:
🔴 The trunk lid closes on its own – the most typical symptom
🟠 The lid stays open only at a certain angle – the strut still works but is losing strength
🟡 The lid opens slowly or with resistance – the strut is stiff or damaged
🟡 Visible corrosion or damage to the strut body
🟢 Preventive replacement – we recommend replacement after 8–10 years of use or when purchasing a used vehicle
The correct replacement strut for your Dodge Challenger
For both generations of the Dodge Challenger – LC (2008–2014) and LA (2015–2024) – the same replacement strut is specified under the original part number:
| Parameter | Detail |
|---|---|
| OEM part number | 04589645AB |
| Component type | Trunk lid strut (gas) |
| Compatible models | Dodge Challenger LC (2008–2014) |
| Compatible models | Dodge Challenger LA (2015–2024) |
| Installation | Left and right side (set of 2 pcs) |
| Manufacturer | Original Mopar / Stellantis part |
💡 Tip: Struts should always be replaced in pairs – even if only one is damaged, the other is usually in the same condition and will soon fail as well. Replacing both at the same time will save you time and money on repeated work.
How is the trunk strut replaced?
Good news! Replacing the trunk strut on a Dodge Challenger is a relatively simple operation that even a capable DIY enthusiast can handle. You do not need any special tools or a lift.
You will need:
- 🔧 A flat-head screwdriver or plastic pry tool
- 🧤 Work gloves
- 👤 An assistant (recommended for holding the lid)
Replacement procedure:
1. Open the trunk lid and secure it in the open position (e.g. with a rod or with the help of another person).
2. Locate the struts – they are located on both sides of the trunk lid and attached with joint pins.
3. Disconnect the lower mounting – using a flat-head screwdriver or plastic pry tool, carefully slide out the retaining ring and remove the strut from the lower pin.
4. Disconnect the upper mounting – release the strut from the upper pin on the trunk lid in the same way.
5. Install the new strut – in reverse order. Make sure the retaining rings are seated correctly.
6. Check functionality – open and close the trunk lid several times to verify that the new struts are functioning correctly.
⏱️ Total installation time: approximately 15–30 minutes
Why buy from us?
In our e-shop, you will find the Dodge Challenger (OEM: 04589645AB) trunk strut in stock with fast shipping. We offer:
- ✅ Original Mopar parts – guaranteed compatibility and quality
- ✅ Fast delivery – usually within 2–3 business days
- ✅ Expert advice – not sure? Write to us or give us a call!
- ✅ Easy returns – customer service always at hand
Do you need a part that is directly connected to the trunk strut?
Contact us about any part, we will help you.