2011-2023 Chrysler 300 Radiator Core Support: Damage, Part Numbers & Replacement
This guide clarifies the critical difference between the upper and lower radiator supports and explains how to inspect a used one after a front-end collision.
- This part is the radiator core support, not the main frame rail. It consists of a separate upper and lower piece that are often confused.
- Damage is almost always from a front-end collision; symptoms include poor panel alignment, hood latch issues, and visible bending.
- Replacement is a major, high-difficulty job that requires welding and should be done by a professional body shop.
- Driving with a significantly damaged radiator support is unsafe as it compromises structural integrity and can lead to other failures.
A Critical Distinction: Frame Rail vs. Radiator Support
Before diagnosing or buying parts, it's important to understand the terminology. The main "frame rails" are the two large, heavy steel beams that run from the front to the back of the car, forming its primary foundation. The part discussed here is the radiator core support, a multi-piece assembly that sits at the very front of the car between the frame rails. This assembly is what's most commonly damaged in a front-end collision.
Compatibility Warning: Buyers often confuse the upper and lower sections of the radiator support. The main upper piece is a large crossmember, often called an upper tie bar, identified by Mopar part number 68142203AC. The lower piece is a separate, smaller crossmember known as the lower tie bar, with part number 5065240AG (which was later superseded by 5065240AH). Always verify which specific part you need before ordering, as they are sold separately.
Symptoms of a Damaged Radiator Support
Since the radiator support is a structural component, it doesn't "fail" from wear and tear. Damage is almost always the result of a front-end collision. Symptoms are often visual or related to the alignment of other parts.
- Poor Panel Alignment: The most common symptom is improper gaps around the hood, fenders, and front bumper. The hood may be difficult to close, pop open unexpectedly, or not line up correctly with the fenders.
- Visible Damage: Obvious cracks, bends, or kinks in the metal or plastic components of the support structure are a clear sign of failure.
- Headlight Aiming Issues: If the headlights cannot be properly aimed, it may be because their mounting points on the support are bent or broken.
- Hood Latch Problems: The hood latch is mounted directly to the upper radiator support. If it doesn't engage or release correctly, the support may be bent.
- Engine Overheating: In severe cases, a bent support can push the radiator or A/C condenser out of position, restricting airflow and causing the engine to overheat. This can also lead to coolant leaks if the radiator itself is damaged.
Buying a Used 2011-2023 Chrysler 300 Radiator Support
A used OEM radiator support can be an excellent value, offering better fit and material quality than many low-cost aftermarket alternatives. However, careful inspection is crucial.
Inspection Checklist for Used Supports:
- Check for Bends and Cracks: Lay the support on a flat surface. Look for any twisting or bowing. Pay close attention to all weld points and corners for hairline cracks.
- Verify All Mounting Points: Inspect every mounting tab and hole for the radiator, headlights, and fenders. Ensure they are intact, not cracked, and not elongated from stress.
- Look for Signs of Previous Repair: Be wary of areas with excessive body filler, mismatched paint, or sloppy-looking welds. Mopar specifies that frame components should only be repaired using "cold straightening" methods, as heat can compromise the metal's integrity.
- Confirm Part Numbers: Double-check that you are buying the correct part—either the upper support (68142203AC and its predecessors) or the lower tie bar (5065240AG/AH).
Known Issues, Recalls, and Technical Service Bulletins (TSBs)
There are no specific recalls or TSBs issued by the NHTSA for defects related to the radiator core support structure itself for the 2011-2023 Chrysler 300. Failures of this component are overwhelmingly caused by external factors like collisions, not manufacturing flaws.
Replacement Cost & Difficulty
Replacing the radiator support is a major job that requires significant disassembly of the vehicle's front end, including the bumper, headlights, and cooling system components. On the Chrysler 300, the support is attached with both bolts and factory spot welds that must be drilled out. Installing the new part typically requires welding, making this a difficult job for the average DIY mechanic.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Upper Support (68142203AC) | $430 - $550 |
| New OEM Lower Support (5065240AG/AH) | $280 - $360 |
| New Aftermarket Upper Support | $230 - $280 |
| New Aftermarket Lower Support | $30 - $60 |
| Used OEM (Upper & Lower Assembly) | $200 - $450+ (Varies by condition and source) |
| Shop Labor for Replacement | $800 - $1500+ (Varies widely based on shop rates and extent of damage) |
Pro Tip: Because replacement involves welding and affects the structural alignment of the entire front end, it is highly recommended to have this work performed by a professional body shop with frame alignment equipment.
Frequently Asked Questions (FAQ)
Is the radiator support the same for a Dodge Charger and Chrysler 300?
Yes, for the 2011-2023 model years, the underlying chassis and many structural components, including the radiator support, are shared between the Chrysler 300, Dodge Charger, and Dodge Challenger. The lower tie bar (5065240AG) is explicitly listed as fitting all three models. However, always verify part numbers for your specific vehicle before purchasing.
Can I replace a radiator support myself?
This is not recommended for beginners. The job requires extensive disassembly of the front end, drilling out spot welds, and welding the new part in place. Improper installation can lead to poor panel fit, alignment issues, and compromised crash safety. This job is best left to experienced technicians or body shops.
Does a damaged radiator support need to be replaced?
Yes. A damaged radiator support compromises the structural integrity of the front of your vehicle, can cause other parts like the radiator to fail, and will likely prevent the vehicle from passing a safety inspection due to misaligned headlights or structural issues. If the frame integrity cannot be returned to its pre-collision state, it must be replaced.
Does the new radiator support need to be painted?
Yes. Most new radiator supports, whether OEM or aftermarket, come coated in a black primer (e-coat) for corrosion protection during shipping. This primer is not a final finish. The support should be properly prepped and painted with automotive-grade paint to prevent rust, especially in areas where welds were made.
Technical Specifications
OEM Part Numbers: 68142203AC 68142203AB 68142203AA 57010299AC 57010299AB 57010299AA 5065240AG 5065240AH
The primary upper support (68142203AC) is a direct replacement for the entire 2011-2023 model year range, fitting all engine types (3.6L, 5.7L, 6.4L). The lower support (5065240AG/AH) also fits the Dodge Charger and Challenger of the same era.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chrysler 300:
- 🛍️ Shop This Part
- A Critical Distinction: Frame Rail vs. Radiator Support
- Symptoms of a Damaged Radiator Support
- Buying a Used 2011-2023 Chrysler 300 Radiator Support
- Inspection Checklist for Used Supports:
- Known Issues, Recalls, and Technical Service Bulletins (TSBs)
- Replacement Cost & Difficulty
- Frequently Asked Questions (FAQ)
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