2007-2009 Acura RDX Radiator Support: A Collision Repair and Fitment Guide

Symptoms of a Damaged Radiator Support

A radiator support doesn't have moving parts, so it doesn't 'fail' from wear and tear. Failure is almost always caused by physical damage from a front-end collision or, less commonly, severe rust. The symptoms are usually visible if you know where to look.

1. Visible Cracks, Bends, or Rust

The most obvious sign is physical damage. After any front-end impact, even a minor one, inspect the support thoroughly. Look for bent metal, cracked plastic, or broken welds. On steel supports like the one in the RDX, check for significant rust, especially around weld seams and mounting points, as this can compromise its structural strength.

2. Poor Body Panel Alignment

This is a classic sign of a tweaked core support. If the support is even slightly bent, it will throw off the alignment of everything attached to it. Look for:

• Uneven Gaps: Check the spacing between the hood and the fenders, or between the bumper cover and the headlights. If the gaps are wider on one side than the other, the support may be pushed out of square.
• Hood Latch Problems: A hood that is difficult to close or that won't latch securely is a major red flag. This indicates the hood latch, which bolts to the support, is no longer in the correct position.
• Misaligned Headlights: If your headlights seem to point in different directions or are no longer sitting flush with the surrounding panels, the support they mount to could be damaged.

3. Cooling System Problems or Noises

A bent support can push the radiator or A/C condenser backward into the cooling fans. This can cause a rattling or grinding noise when the engine is running. In severe cases, it can damage the fan blades or puncture the radiator itself, leading to coolant leaks and engine overheating.

Buying a Used 2007-2009 RDX Radiator Support

For a structural part like this, a high-quality, undamaged used OEM part is often a better choice than a cheap new aftermarket one. Aftermarket supports are notorious for fitment issues, such as misaligned mounting holes that require drilling or bending to install, adding hours to the repair job. A used OEM part was built by Acura to fit perfectly.

What to Inspect Before You Buy:

• Check for Straightness: Lay the support on a flat floor. It should sit level without rocking. Look down the main upper and lower beams to spot any subtle bends or warps.
• Inspect All Mounting Points: Carefully check every single tab, bracket, and bolt hole. Look for elongated holes, stress cracks in the plastic or metal, and any signs of previous repairs like sloppy welds or body filler. All these points are critical for aligning the headlights, bumper, and radiator.
• Look for Hidden Damage: Pay close attention to the corners and lower sections, which are most likely to be damaged in a collision. Minor surface rust on a steel support can be sanded and painted, but walk away if you see heavy, flaking rust that compromises the metal's thickness.
• Confirm the Part Number: The correct OEM part number for the 2007-2009 RDX is 60400-STK-A00ZZ. While a visual match is good, confirming the part number is the best way to guarantee you have the right piece.

Known Issues & Mechanic Tips

While the radiator support itself is a robust part with no common factory defects, there is a well-known issue with the radiator used in the 2007-2009 RDX that you should be aware of during this repair.

Installation & Replacement Cost

Replacing the radiator support is a complex and labor-intensive job. It is not recommended for beginners.

• Difficulty: 5 out of 5.
• Process: The entire front end of the vehicle must be disassembled. This includes removing the front bumper cover, 🎬 Watch: How to remove the front bumper cover impact bar, headlights, hood latch, radiator, A/C condenser, and cooling fans.
• Special Requirements: The A/C system must be professionally evacuated before disconnecting the condenser and recharged after reassembly. The cooling system must be drained and properly refilled and bled.

Cost Breakdown

Prices can vary based on your location and the supplier. The main value of buying a used OEM part is saving money over a new dealer part while ensuring a perfect fit that aftermarket parts often lack.

Frequently Asked Questions (FAQ)