4WD; Front Shaft - CV At Transfer Case; 3 Joint Rear Shaft
MOOG 291 Specifications
Bearing Cap Axis 1 Diameter
1.375 in
Bearing Cap Axis 1 Diameter
34.93 MM
Bearing Cap Axis 2 Diameter
1.375 in
Bearing Cap Axis 2 Diameter
34.93 MM
Bearing Cap Type
4 Grooved Round Bearings
Greaseable
No
Length Axis 1
3.579 in
Length Axis 1
90.907 MM
Length Axis 2
3.579 in
Length Axis 2
90.907 MM
Part Description
Universal Joint
Super Strength; Non-Greasable
By constantly introducing design enhancements that extend product life and simplify installation and replacement, MOOG has earned its reputation as the chassis industry's Problem Solver.
Features & Benefits:
Super Strength™ alloy steel crosses for higher torque and horsepower
Eliminates grease passages in the cross for maximum strength in high torque applications
Exclusive MICRO SHIELD coating resists corrosion that may weaken the cross
Needle bearings sourced from OE supplier for size consistency, proper hardness, and strength
Extra strength carboxylated nitrile rubber grease seals use a compressed double lip design for protection from contaminants
Consistent heat treatment achieves good bearing hardness for durable wear and strength
Which Universal Joint Is Right For You?
Drive Conditions
Type
Normal City / Highway
Dirty / Dusty
Extreme Weather
Heavy Towing
Off-Road / Racing
Economy
Standard Replacement
Heavy Duty
Greasable vs. Non-Greasable
While non-greasable universal joints were once considered an upgrade over greasable universal joints, the differences in strength and durability are negligible today. Advancements in technology mean either option is a great choice, but there are some key pros and cons to consider:
NON-GREASABLE
Pros: Non-Greasable U-Joints do not need to be serviced regularly. After installation, these U-Joints require little upkeep and primarily need to be monitored for signs of failure.
Cons: Since these U-Joints cannot be re-greased, the entire U-Joint must be replaced at the first sign of wear / noise as to not risk failure.
GREASABLE
Pros: Greasable U-Joints are serviceable and contaminants can be flushed out easily. Regular maintenance and greasing also means you'll be more in tune with the wear status of the joints.
Cons: These U-Joints need to be checked and greased regularly. If this sounds unfavorable or if you're forgetful, non-greasable may be a better choice.
Preventative Maintenance Tips
The key to maximizing the performance and durability of any universal joint - as well as related parts such as drive shafts - is preventative maintenance. Universal joints are designed to last the life of the vehicle, but can wear down or break if neglected or overloaded. Follow these tips to avoid premature failure of your vehicle's drivetrain:
If a greasable universal joint is installed, periodically check them to ensure they are properly greased (at the very least, at every oil change).
Inspect the yokes that hold your universal joints for cracks, stress marks, or worn or damaged seal mating surfaces, and replace them if any of these are present.
Check your seals for signs of leakage, and replace them if leaks are present.
Periodically check for drive shaft play, which is an indication that a universal joint or seal has failed and needs to be replaced.
Inspect drive shafts for cracks, stress marks, dents, or bends, and replace them if any of these are present.
Which Universal Joint Is Right For You?
Greasable vs. Non-Greasable
Preventative Maintenance Tips