National 11590 Steering Knuckle Bearing - Front

National 11590 Steering Knuckle Bearing

National 11590 is a taper bearing cone for steering knuckle applications that demand precise load support and consistent rotation. Built with premium-grade steel and crowned raceways and rollers, it is engineered to distribute load evenly across the bearing surface.

• Taper bearing cone for steering knuckle service
• Premium-grade steel construction
• Crowned raceways and rollers for even load distribution
• Cone bore: 0.6250 in. (15.8750 mm)
• Cone length: 0.5625 in. (14.2880 mm)
• Cone radius: 0.0620 in. (1.5750 mm)
• Part number: 11590

Application Details

Use National 11590 when servicing front steering knuckle bearing assemblies on vehicles that call for this taper bearing cone. This part cross-references SKF BR11590 for the same application. It is listed for a wide range of front axle and steering knuckle setups, including Land Rover Discovery, Range Rover, Defender 90, and Defender 110 applications, as well as select Chevrolet, GMC, Ford, and Jeep models.

• Fits 1994-2004 Land Rover Discovery, front, with 8.589 in ring gear and Salisbury 8HS axle
• Fits 1987-2002 Land Rover Range Rover, front, with 8.589 in ring gear and Salisbury 8HS axle
• Fits 1970-1974 Land Rover Range Rover, front, with 8.589 in ring gear and Salisbury 8HS axle
• Fits 1997 Land Rover Defender 90, front, with 8.589 in ring gear and Salisbury 8HS axle
• Fits 1994-1995 Land Rover Defender 90, front, with 8.589 in ring gear and Salisbury 8HS axle
• Fits 1993 Land Rover Defender 110, front, with 8.589 in ring gear and Salisbury 8HS axle
• Fits 1975-1977 Chevrolet K10, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1967-1977 Chevrolet K10 Suburban, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1975-1977 Chevrolet K20, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1967-1977 Chevrolet K20 Suburban, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1975-1977 Chevrolet K5 Blazer, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1975-1976 GMC Jimmy, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1970-1972 GMC Jimmy, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1974-1975 Ford F-250, front, steering knuckle race compatible with 8.5-inch ring gear and Spicer 44-6EF axle
• Fits 1974-1975 Ford F-350, front, steering knuckle race compatible with 8.5-inch ring gear and Spicer 44-6EF axle
• Fits 1969-1974 Chevrolet Blazer, front, compatible with Spicer 44-5F axle and differential pinion repair sleeve for 8.5 inch ring gear drive axle shaft seal
• Fits 1972-1973 Jeep CJ5, front, compatible with vehicles featuring a 7.2 inch ring gear and Spicer 27-F axle
• Fits 1972-1973 Jeep Wagoneer, front, compatible with vehicles featuring a 7.2 inch ring gear and Spicer 27-F axle
• Fits 1971-1972 Ford Bronco, front, compatible with vehicles equipped with 8.5 inch ring gear and Spicer 44-1F axle
• Fits 1966-1972 Ford F-100, front, with 8.5 in ring gear and Spicer 44-7F axle
• Fits 1964-1972 Ford F-250, front, fits steering knuckle with 8.5 inch ring gear and Spicer 44-6F axle
• Fits 1964-1972 Ford F-250, front, fits vehicles with 8.5 inch ring gear and Spicer 44-6CF axle
• Fits 1964-1972 Ford F-350, front, fits vehicles with 8.5 inch ring gear and Spicer 44-6CF axle
• Fits 1964-1972 Ford F-350, front, fits steering knuckle with 8.5 inch ring gear and Spicer 44-6F axle
• Fits 1959-1972 Jeep CJ5, front, 7.75 inch ring gear compatible with Spicer 25-F axle for differential pinion repair sleeve
• Fits 1966-1971 Ford Bronco, front, with 7.125 in ring gear and Spicer 30-AF axle
• Fits 1964-1971 Ford F-250, front, fits vehicles with 8.5 inch ring gear and Spicer 44-6FHD axle
• Fits 1964-1971 Ford F-350, front, fits vehicles with 8.5 inch ring gear and Spicer 44-6FHD axle
• Fits 1970-1971 Jeep CJ5, front, compatible with 7.2 inch ring gear differential pinion repair sleeve for Spicer 27-AF axle equipped vehicles
• Fits 1970-1971 Jeep Wagoneer, front, compatible with 7.2 inch ring gear differential pinion repair sleeve for Spicer 27-AF axle equipped vehicles
• Fits 1963-1969 Jeep Wagoneer, front, 7.75 inch ring gear compatible with Spicer 25-F axle for differential pinion repair sleeve
• Fits 1959-1965 Ford F-100, front, fits vehicles with 8.5 inch ring gear and Spicer 44-F axle
• Fits 1959-1965 Ford F-250, front, fits vehicles with 8.5 inch ring gear and Spicer 44-F axle
• Fits 1959-1965 Ford F-350, front, fits vehicles with 8.5 inch ring gear and Spicer 44-F axle

Common Service Uses

• Replacing a worn steering knuckle bearing cone
• Addressing looseness or roughness in the front knuckle assembly
• Restoring proper bearing preload and rotation in axle service
• Repairing front-end components during axle or knuckle rebuilds
• Supporting service on Land Rover, Ford, Chevrolet, GMC, and Jeep front axle applications

Installation Notes

Verify cone bore, cone length, and cone radius against the original bearing before installation. Confirm axle, ring gear, and steering knuckle configuration for the exact vehicle application, especially on Land Rover Discovery, Range Rover, and Ford F-250/F-350 front axle setups. Clean and inspect the mating surfaces, and replace any damaged races or related wear components during service.

Quality Assurance

National manufactures this taper bearing cone with premium-grade steel and crowned raceways and rollers to promote even load distribution across the bearing surface. Part number 11590 is built for steering knuckle bearing service where dimensional accuracy and consistent load handling matter.