A Comprehensive Guide to Universal Joints for the 1977-1988 Dodge W150
Don't let a bad U-joint sideline your classic Dodge truck; here's how to choose the right replacement part.
- You must measure your old U-joints before ordering; W150s use both 7260 and 7290 sizes.
- Dana/Spicer is widely considered the best brand, as they were the original supplier and are known for strength.
- Symptoms like clunking or vibration should be addressed immediately to prevent driveshaft failure and further damage.
- A 4x4 W150 can have up to seven U-joints, so inspect all of them when you notice a problem.
Is Your W150's U-Joint Failing?
A failing U-joint isn't just a noisy annoyance; it's a serious safety risk. If a U-joint breaks completely, the driveshaft can fall, causing a loss of power and potentially damaging other parts of your truck. Listen and feel for these common symptoms of a bad U-joint.
🎬 Watch: 7 common signs your universal joint is failing.Choosing the Right Aftermarket U-Joint
For a classic truck like the 1977-1988 W150, new OEM parts are generally unavailable. Aftermarket parts are your go-to solution, and the quality is often as good or even better than the original. Brands have different reputations for quality and durability, so choosing the right one depends on your budget and how you use your truck.
Brand Quality Tiers for Your Dodge W150
- Premium / Heavy-Duty (Best): Dana Spicer and Yukon Gear are top-tier choices. Spicer was often the original equipment manufacturer (OEM) for these trucks, and their parts are known for durability and perfect fitment. Many truck owners will only use Spicer parts. Yukon Gear offers high-strength options, like their chromoly steel joints, which are excellent for off-roading or heavy-duty use.
- Quality Aftermarket (Better): Moog and SKF are well-regarded aftermarket brands. Moog is known for problem-solving designs, like placing grease fittings in the bearing cap for easier maintenance. However, some users report a decline in Moog's quality in recent years, so it's important to inspect the part. SKF is a trusted name in bearings and offers reliable U-joints that are a solid choice for daily driving.
- Standard / Economy (Good): GMB is a popular choice for those on a budget. They offer a reliable product that meets standard specifications and is a good value for a truck that sees light to normal use.
Pro Tip: Measure Before You Buy!
Older Dodge trucks like the W150 can have different U-joint sizes, most commonly the "small" 7260 series and the "large" 7290 series. It's not uncommon to find a mix of sizes on the same truck. Before ordering, use calipers to measure the width of the yoke (where the U-joint sits) and the diameter of the bearing caps on your old U-joint to guarantee you get the right part. 🎬 See this DIY walkthrough for replacing U-joints on classic Rams. The 7260 yoke has an inner span of 2.125 inches, while the 7290 is 2.625 inches.
Aftermarket Universal Joint Cost for 1977-1988 Dodge W150
| Brand Tier | Price Range (Per Joint) |
|---|---|
| Premium (Dana Spicer, Yukon Gear) | $30 - $110 |
| Quality Aftermarket (Moog, SKF) | $20 - $50 |
| Standard (GMB) | $17 - $30 |
Note: Your W150 has multiple U-joints. A full replacement could involve 5 to 7 joints depending on your driveshaft configuration.
Frequently Asked Questions
Should I choose a greasable or non-greasable U-joint?
This is a topic of debate. Non-greasable (sealed) joints, like many from Spicer, are often considered stronger because the cross is solid steel. They are filled with high-quality grease at the factory and can last over 100,000 miles with no maintenance. Greasable joints allow you to flush out water and contaminants with new grease, which is beneficial for off-roading or harsh conditions. However, they require regular maintenance, and if you forget to grease them, they can fail prematurely.
How many U-joints does my 1977-1988 W150 have?
Your 4x4 W150 has U-joints in several locations. You will have one at each end of the rear driveshaft (2 total). The front driveshaft typically has three, including two in the CV (Constant Velocity) joint at the transfer case and one at the front axle. Additionally, there is a U-joint in each front axle shaft behind the wheels for steering (2 total). This brings the typical total to seven U-joints.
What are the Chrysler 7260 and 7290 series U-joints?
These are the two most common U-joint sizes used on classic Mopar trucks. The 7260 is the "small" joint and the 7290 is the "large" joint. They are not interchangeable, as they have different cap diameters and overall widths. It is critical to measure your existing yokes and joints to confirm which size you need before ordering. Combination joints are available if you have a driveshaft with a 7260 yoke and an axle with a 7290 yoke, or vice-versa.
Were there any recalls for W150 U-joints?
Searches of the National Highway Traffic Safety Administration (NHTSA) database did not show any specific recalls for universal joints on the 1977-1988 Dodge W150. A recall from 2001 (NHTSA ID: 01V008000) mentioned rear axle U-bolts losing clamp load, but this was related to the suspension spring plate, not the U-joint itself. Other recalls found were for much newer model years or different components.
Helpful Videos
Technical Specifications
The most important specifications are the U-joint series (e.g., 7260 or 7290) and the corresponding measurements. The 7260 series has a yoke span of 2.125" and a cap diameter of 1.078". The 7290 series has a yoke span of 2.625" and a cap diameter of 1.125". Part numbers vary significantly by brand and specific location on the truck.
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.