A Guide to Universal Joints for the 2003-2009 Lexus GX470
Understanding the common clunks, vibrations, and solutions for your GX470's driveshaft.
- A common 'clunk' or 'thump' when stopping is a known issue, often related to the driveshaft and U-joints.
- Listen for squeaking at low speeds or vibrations at high speeds as early warnings of U-joint failure.
- Regularly greasing the zerk fittings on serviceable U-joints and the driveshaft slip yoke is critical maintenance for the GX470.
- High-quality aftermarket brands like Dana Spicer, Moog, and SKF are excellent alternatives to OEM parts.
Is Your GX470 Making a Clunking Noise?
One of the most well-known issues with the 2003-2009 Lexus GX470 is a distinct "clunk" or the feeling of being bumped from behind when coming to a stop or accelerating from a standstill. This is often caused by the driveshaft's slip yoke binding, a problem that can be made worse by worn U-joints or lack of lubrication. 🎬 Watch: How to clean and grease your driveshaft to stop clunking. While regular greasing of the U-joint and slip yoke fittings can help, worn U-joints will continue to cause problems until replaced.
Symptoms of a Failing Universal Joint
Pay attention to your vehicle's sounds and feelings. A bad U-joint will give you warning signs before it fails completely.
- Vibrations: A vibration felt through the floor or seats, especially at highway speeds, is a common symptom. This happens when worn bearings allow the driveshaft to wobble.
- Clunking Noises: A loud clunk or ringing sound when you shift from drive to reverse (or vice-versa) points to excessive play in a worn U-joint.
- Squeaking or Chirping: A repetitive squeak that changes with your speed, often heard at lower speeds (under 10 mph), usually means a U-joint is dry and failing from lack of grease.
A Note on Drivetrain Binding
The notorious "driveshaft clunk" on the GX470 is so common that Lexus issued a Technical Service Bulletin (TSB) for it (L-SB-0116-08). The TSB acknowledges a clunk or "bump-from-behind" sensation and recommends a newly designed propeller shaft assembly to fix it. While this often relates to the slip yoke, worn U-joints contribute to the problem and should be inspected carefully.
🎬 See this video for a deep dive into fixing the clunk.Choosing the Right Aftermarket U-Joint
When replacing your U-joints, you have several good aftermarket options. The original factory U-joints are high-quality, but many owners find that top-tier aftermarket brands offer comparable or even superior performance, often with the benefit of being greaseable. Greaseable joints have fittings (zerks) that allow you to add fresh grease, flushing out old grease and contaminants, which can extend their life with regular maintenance.
Brand Quality Tiers
- Top Tier (OEM Quality or Better): Brands like Dana Spicer and Matsuba are highly regarded. Spicer is a well-known OEM supplier, and their non-greaseable joints are considered extremely durable. Matsuba is a high-quality Japanese manufacturer often recommended by Land Cruiser and GX enthusiasts.
- Professional Grade: Moog and SKF are trusted brands that offer reliable, greaseable U-joints. They are a popular choice for both DIY and professional repairs, known for problem-solving designs and durability.
- Standard/Economy: Brands like GMB offer a cost-effective solution. While they can be a good value, they may not have the same long-term durability as the top-tier options.
Pro Tip: Many experienced owners and mechanics recommend using non-greaseable U-joints, like those from Spicer, arguing they are stronger due to their solid-body design. However, greaseable joints from a quality brand like Moog or SKF can last a very long time if you are diligent about regular maintenance.
How Much Does a U-Joint Replacement Cost for a GX470?
The cost can vary depending on whether you do the work yourself or hire a shop. The parts themselves are relatively inexpensive.
| Item | Estimated Cost |
|---|---|
| New Aftermarket U-Joints (Each) | $21.13 - $65.69 |
| Shop Labor | $134 - $399 |
| Total Professional Replacement (One Joint) | $278 - $408 |
Note: It is often recommended to replace all U-joints on a driveshaft at the same time. Prices are estimates and can vary by location and specific part choice.
Frequently Asked Questions
Do I need to replace the whole driveshaft?
Not usually. In most cases, you only need to replace the individual U-joints. However, if you are experiencing the severe "driveshaft clunk" described in the Lexus TSB, some owners opt to replace the entire rear driveshaft assembly with the updated Lexus part (37110-60A40) to permanently solve the slip yoke binding issue.
Should I get greaseable or non-greaseable U-joints?
This is a matter of preference. Non-greaseable (sealed) joints are stronger and require no maintenance, just like the original parts. Greaseable joints can last longer if maintained properly, as you can periodically flush out contaminants. If you don't plan on greasing your joints every oil change, choose a high-quality sealed joint like a Spicer.
How many U-joints does my GX470 have?
The Lexus GX470 has a front and a rear driveshaft. Each shaft typically has two U-joints. When ordering, be sure to confirm the position (front shaft, rear shaft) as they may use different part numbers.
🎬 Watch this step-by-step walkthrough for replacing a front driveshaft U-joint.Was there a recall for the GX470 U-joints?
No, there have been no specific recalls issued by the NHTSA for the universal joints on the 2003-2009 Lexus GX470. The most relevant document is a Technical Service Bulletin (TSB) for a clunking noise related to the rear driveshaft assembly.
Helpful Videos
Technical Specifications
OEM Part Numbers: 04371-60070 04371-35050 04371-35031 04371-35051
The GX470 uses U-joints on both the front and rear driveshafts. There are typically two U-joints per shaft. Some aftermarket options are greaseable via zerk fittings, while OEM and some aftermarket parts are sealed (non-greaseable).
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.
- Lexus GX470: