MOOG Greaseable Universal Joint 447 for Combination 331 x 534G — Forged, Greasable U-Joint with Nitrile Seals

MOOG 447 is a greaseable premium universal joint engineered to restore driveline movement and extend service life for applications requiring Combination 331 x 534G fitment.

Built from hardened, forged components and advanced sealing, this MOOG universal joint is designed to replace worn or failing U-joints with a long-lasting, serviceable option. Its greasable design lets technicians and vehicle owners introduce fresh lubricant to displace contaminants, while nitrile rubber seals keep dirt and moisture away from bearing surfaces. MOOG validates fitment across a wide range of domestic and foreign vehicles and subjects each design to extensive testing during development.

How does this U-joint improve driveline reliability?

The MOOG 447 uses cold-forged, case-hardened bearing cups and a carburized, heat-processed steel cross to resist wear and handle torque loads. Grease access allows periodic lubrication, reducing friction and prolonging service intervals compared with sealed, non-serviceable units.

• Cold-forged bearing cups for uniform strength
• Carburized heat-treated cross for fatigue resistance
• Serviceable grease fitting to replenish lubricant
• Double-lip nitrile seals to block contaminants

Will this part fit my vehicle and how do I confirm compatibility?

This MOOG U-joint is specified to fit Combination 331 x 534G applications, but actual fit requires matching your vehicle’s year, make, model, engine and trim. Always verify fitment using the vehicle confirmation tool provided by your seller and review any published qualifier notes for special fit conditions.

• Designed for Combination 331 x 534G flange patterns
• Check the seller’s vehicle compatibility bar before ordering
• Review any information-icon notes for additional fit details
• Available for a range of foreign and domestic nameplates

How does the greasable design benefit maintenance and longevity?

Greasable U-joints let mechanics flush out debris and renew lubricant periodically, reducing the chance of premature wear. Fresh grease helps maintain smooth rotation and can reveal seal integrity during service intervals, making it easier to catch issues before failure.

• Grease fitting enables routine lubrication and flushing
• Helps move contaminants out of bearing interfaces
• Makes preventive maintenance straightforward for shops and DIYers
• Preserves joint smoothness under heavy or intermittent loads

What quality controls and materials back this MOOG product?

MOOG subjects the 447 universal joint to design and development testing to meet durability expectations. Components are precision ground where required and assembled with sealing features engineered to keep dirt and moisture away from moving surfaces.

• Engineered and tested during development by MOOG engineers
• Precision-ground surfaces to ensure proper fit and rotation
• Nitrile rubber double-lip seals for contaminant exclusion
• Manufactured to withstand common automotive driveline loads

Who is this for: The MOOG 447 greaseable premium universal joint is aimed at professional mechanics, fleet maintenance teams and hands-on vehicle owners who need a serviceable, heavy-duty replacement for Combination 331 x 534G driveline applications. Choose this part when you require a durable, maintainable U-joint backed by engineering validation and broad vehicle coverage.