Description
Land Rover Discovery 3 front upper arm ball joint
Enhance your Land Rover Discovery 3’s front suspension with this ball joint for the upper arm, a key component ensuring precise steering and stability across 2004-2009 L319 models. It resolves common issues like clunking over bumps on uneven Kenyan terrain, promoting up to 100,000 km service life with proper greasing. The durable steel design with sealed rubber boot blocks debris, offering OEM-equivalent performance for daily or light off-road use. Fits arms RBJ500222 (right) and RBJ500232 (left) without modifications; supplied with hardware for bolt-on replacement. Verify fit via VIN for engine variants (e.g., TDV6, V8), and torque correctly to avoid premature wear—pair with bushing checks for comprehensive maintenance.
Detailed Key Features
- Stud and Socket Design: 19-20 mm steel ball stud in socket for full articulation, supporting vertical and lateral movements in independent suspension.
- Sealing Mechanism: Rubber boot with grease fitting retains lubricant, excluding water/dust for tropical durability.
- Mounting Compatibility: Threads for M14 x 1.5 nut, fits front upper control arm to knuckle on L319 chassis.
- Load and Durability: Rated for 10,000 N dynamic loads, with zinc plating for salty air exposure.
- Kit Perks: Includes nut and circlip; weighs about 1 kg for easy handling.
Technical Specifications Table
| Specification | Value | Notes/Source |
|---|---|---|
| OEM Part Number | RBK500170 | Front upper for both sides, 2004-2009 Discovery 3 |
| Superseded From | RBK500030 | Earlier variant for upper arm joint |
| Aftermarket Example | Lemforder / TRQ | Repair kit for arms RBJ500222/RBJ500232; greaseable |
| Stud Diameter | 19-20 mm | Steel ball for secure articulation |
| Socket Width | 40-50 mm | Housing for ball movement |
| Nut Thread Size | M14 x 1.5 | Retaining nut compatibility |
| Material | High-carbon steel | With rubber boot and zinc coating for corrosion resistance |
| Load Capacity | Up to 10,000 N | Dynamic radial/axial support for SUV weight |
| Temperature Rating | Up to 120°C | Grease-packed for heat resistance |
| Weight | 1 kg | Per assembly for lightweight installation |
| Torque Spec (Ball Joint Nut) | 70 Nm | Retaining nut installation |
| Torque Spec (Arm to Frame) | 175 Nm | Upper control arm bolts |
| Compatibility | Discovery 3 2004-2009 | Front upper; all engines, AWD; verify VIN |
Checkout: Land Rover
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