World American 513367 Differential Ring & Pinion, For RS404/RS405/RA-RD344 Gear Ratio 4.11, Rear Axle, 9 Pinion & 37 Ring Tooth - Fits Freightliner Kenworth Peterbilt Volvo Mack Replaces Spicer 211486

Short Summary: The World American 112 513367 differential ring and pinion set is built for heavy-duty rear axle applications. Designed with a 4.11 gear ratio and hypoid gear style, it fits RS404, RS405, RA/RD344, and other compatible axles. This gear set delivers reliable performance for commercial and vocational trucks.Key FeaturesAxle Compatibility: RS404, RS405, RA/RD344, RSP/RDP40, 17/19/21/22060S/D, 404, 405, 41, 454Gear Ratio: 4.11Gear Style: HypoidPinion Gear Tooth Count: 9Ring Gear Tooth Count: 37Ring Gear Outer Diameter: 15.4 InchesAxle Position: Rear-RearConstruction: High-strength steel for heavy-duty performanceProp 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.govVehicle CompatibilityCompatible with various heavy-duty commercial trucks using RS404, RS405, RA/RD344, and related axle configurations. Common applications include:FreightlinerKenworthPeterbiltVolvoMackOther Class 8 Truck Platforms with listed axlesReplaces OEM & Aftermarket Part NumbersGeneral Motors: 12388244Spicer: 211452, 211486, 211486-15, 25-513367, ETN211486, ETN513367Eaton: EAR211486Euroricambi: 24171162, 24171448Meritor: M12211486, M12513367, 513367MTORPaccar Parts: 513367ETNGenuine Newstar: EAR-211486, S-A983, SA983Warranty & Quality AssuranceCovered by a 1-Year or 100,000-Mile Warranty, World American differential ring and pinion sets are trusted in the heavy-duty industry for their durability and performance. Built to handle the most demanding commercial fleet conditions.

• Engineered for RS404, RS405, RA/RD344, and compatible axles – optimized for Class 8 heavy-duty rear applications with 4.11 gear ratio performance.
• Features 9 pinion teeth and 37 ring teeth, delivering dependable torque transfer; 15.4" ring gear OD; built for high-load trucking environments.
• Hypoid design ensures smoother gear engagement and increased strength, while precision-machined teeth reduce noise and enhance longevity.
• Includes ring and pinion gear only (not a full kit); designed for rear-rear axle positions on multiple commercial vehicle models.
• Cross-references Spicer 211486, Eaton EAR211486, Meritor M12513367, and others – backed by a 1-year or 100,000-mile warranty from World American.