MOOG Greaseable Universal Joint for Toyota 4Runner — Model 387, Premium Serviceable U-Joint

MOOG 387 is a greaseable premium universal joint engineered to restore smooth drivetrain operation on Toyota 4Runner and select Lexus models while allowing field servicing for longer life.

This U-joint combines heavy-duty metallurgy, precision manufacturing and a serviceable design so you can replace a worn joint with confidence. MOOG builds the 387 to withstand repeated torque cycles and road contaminants; its greasable fitting and advanced seals let you purge debris and replenish lubricant without removing the joint. The result is improved durability and easier maintenance compared with sealed, non-serviceable units.

What vehicles does this U-joint fit?

The MOOG 387 covers a broad range of Toyota and Lexus models across multiple years. Always verify fit with your vehicle’s year, make, model, engine and trim before buying to ensure compatibility.

• Toyota 4Runner models spanning 1984–2016
• Lexus LX and GX coverage including LX450/LX470, GX470, GX460 and LX570 across 1996–2019 model years
• Designed to match OE-style dimensions and mounting points for direct replacement

How does the greasable design benefit maintenance and longevity?

Greaseable U-joints allow fresh lubricant to be injected into the bearing area, flushing out contaminants and re-establishing a protective film on internal surfaces. This reduces wear and extends service intervals compared with one-time sealed joints.

• Zerk fitting for routine greasing without disassembly
• Flushes out moisture and grit when new grease is added
• Helps delay premature failure in harsh driving or off-road conditions

What construction features improve strength and sealing?

MOOG 387 uses proven materials and heat treatments to resist fatigue and maintain concentricity under load. The joint’s bearing cups, cross and seals are manufactured to minimize play and keep abrasive particles out of the bearings.

• Cold-forged, case-hardened and precision-ground bearing cups
• Forged, carburized steel cross for high fatigue resistance
• Nitrile rubber double-lip seals to combat dirt and retain lubricant

How does MOOG validate performance and fit?

MOOG subjects this U-joint to extensive engineering tests during development and production to confirm durability and dimensional accuracy. Quality checks help ensure a consistent fit and function when you install the part.

• Design and development testing overseen by MOOG engineers
• Dimensional controls to match OEM specifications
• Available for both domestic and many foreign nameplates where specified

Who is this for: The MOOG 387 greaseable premium U-joint is suited for DIY mechanics, professional technicians and off-road enthusiasts who want a robust, serviceable replacement for worn universal joints on Toyota 4Runner and compatible Lexus models. Choose this part if you prefer the option to re-grease in the field, need OE-fit reliability and want a joint built with hardened bearing cups, a carburized cross and effective nitrile seals for longer service life.