MOOG 479 Greaseable Premium Universal Joint for Ram 2500 — Heavy-Duty, Serviceable U-Joint

MOOG 479 is a greaseable heavy-duty replacement universal joint designed to restore drivetrain reliability for Ram 2500 and compatible Ram/Dodge trucks.

This premium universal joint combines rugged materials, precise manufacturing and service-friendly features so fleet vehicles, off-highway rigs and work trucks get a durable, maintainable driveline solution. MOOG engineers built the 479 with cold-formed bearing cups, nitrile seals and a greaseable design that helps extend component life under heavy loads and harsh conditions.

Will this U-joint fit my Ram 2500 or other Ram/Dodge models?

Compatibility covers a range of model years for Ram 2500, Ram 3500, Ram 4500 and select Dodge Ram trucks — always verify fitment before ordering. Use your vehicle year, make, model, engine and trim and check any additional notes shown in seller fitment tools to confirm exact match.

• Fits many Ram 2500 models from 2010–2018 and additional Ram 3500/4500 applications listed by MOOG.
• Check the "Amazon Confirmed Fit" or seller fitment guide for special notes on specific trims or drivetrain variants.
• If the fitment indicator shows an "i" icon, hover or read notes for additional installation or compatibility details.

How does the greaseable design help maintenance?

The MOOG 479 includes drilled and tapped grease fitting holes plus large internal grease reservoirs with radial channels to encourage full lubrication of the cross trunnions. Grease access and distribution reduce the chance of dry starts and make routine servicing fast and effective.

• Drilled and tapped holes accept standard grease fittings for easy servicing during inspections.
• Radial grease channels distribute lubricant evenly to bearing surfaces and trunnions.
• Internal valve in the thrust washer moderates lubrication flow to avoid overpressurizing seals.

What construction features improve durability and contaminant protection?

MOOG uses cold-formed, case-hardened and precision-ground bearing cups and grinds cross trunnions to a smooth 15–25 RMS finish to reduce microscopic surface defects that accelerate wear. Nitrile seals keep dirt and road debris out while retaining grease where it matters most.

• Cold-formed, case-hardened bearing cups for strength under heavy loads and frequent use.
• 15–25 RMS cross trunnion finish minimizes surface defects that lead to premature wear.
• Nitrile seals provide superior grease retention and protection from underbody contaminants.

What testing and engineering back this MOOG universal joint?

MOOG subjects components like the 479 to comprehensive development and quality checks to ensure consistent performance in demanding service. The combination of material selection, precision machining and functional testing aims to deliver dependable replacement parts for commercial and recreational vehicles.

• Design and durability testing performed during development to validate real-world performance.
• Manufacturing controls ensure consistent dimensions and fit for straightforward installation.
• Service-focused features such as grease fittings and internal valves come from MOOG problem-solving design work.

Who is this for? The MOOG 479 greaseable universal joint is intended for technicians, fleet managers and owners of Ram 2500/3500/4500 and compatible Dodge Ram trucks who need a rugged, serviceable replacement U-joint. It’s especially suited to vehicles used in heavy-duty towing, commercial work, off-road or seasonal service where frequent maintenance and long component life matter most.