Ball Joint 43340-39325
This component (OE 43340-39325 / 43340-39465 / 43340-39355 / 43340-39356) is a front lower ball joint. It is a critical pivot point between the lower control arm and the steering knuckle. On high-mileage Toyota vehicles, this ball joint can wear out, causing play in the suspension, clunking noises, and poor handling. Replacing this ball joint restores precise steering and suspension geometry..
Key Features
- Heavy-Offroad Endurance Design: Specifically tailored for body-on-frame SUVs and pickup trucks, with a ball stud diameter enlarged by 18% compared to passenger-car derivatives to handle severe off-road articulation and payload stresses.
- Greaseable with Purge Port: Features both a zerk fitting and a relief valve, allowing old grease to be flushed out during servicing, ensuring the bearing cavity remains clean and free of accumulated contaminants.
- Forged Shoulder Housing: The housing includes an integral shoulder that positively locates the ball joint within the lower control arm, eliminating the need for shims or spacers during installation.
- Triple-Lip Seal System: Employs three independent sealing lips-a primary dust lip, a secondary moisture barrier, and a tertiary grease-retention lip-providing multi-stage protection against mud, water, and silt intrusion.
- Toyota-Specific Taper Match: The stud taper is ground to JIS (Japanese Industrial Standard) specification D 4301, ensuring exact seating within the Toyota knuckle bore with zero gap fitment.
Technical Specifications
|
Specification |
Details |
|
OE Numbers |
43340-39325, 43340-39465, 43340-39355, 43340-39356 |
|
Product Type |
Ball Joint |
|
Position |
Front Axle, Lower, Left or Right |
|
Function |
Connects lower control arm to steering knuckle |
|
Fits Models |
Toyota Tundra, Land Cruiser Prado |
Structural Composition
- Arm Body: Constructed from high-strength steel, designed as a direct OEM replacement.
- Bushings: Pre-installed rubber bushings that absorb road shocks and provide controlled compliance for optimal ride comfort and noise isolation.
- Ball Joint: Integrated ball joint assembly, pre-greased and sealed with a protective boot to ensure long-term reliability and smooth articulation.
- Mounting Interface: Precision-engineered mounting points for exact fitment to the subframe and steering knuckle.
Compatible Vehicle Models
|
Make |
Model |
Years |
|
Toyota |
Tundra |
2000-2003 |
|
Toyota |
Land Cruiser Prado (J9) |
Various |
Installation and Usage Notes
Before installation, apply a generous quantity of NLGI #2 moly-fortified chassis grease through the fitting until it exits the relief valve, confirming the entire cavity is purged of air.
Ensure the control arm bore is clean and free of nicks. Use a wire wheel to remove any rust or old sealant from the mounting face.
Insert the ball joint into the lower arm from underneath, ensuring the shoulder seats fully against the arm's bottom surface-no gap should be visible.
Tighten the retaining bolts in a cross-pattern sequence to 85–95 N·m to evenly compress the mounting flange.
After the vehicle is back on the ground and at ride height, perform a final grease purge by injecting fresh grease until the old material exits the relief valve, confirming full lubrication of the bearing.
FAQ
Q: My Tundra makes a popping noise at full suspension droop. Is this ball joint the cause?
A: Likely yes. A popping sound during full droop indicates axial play exceeding the 0.3 mm service limit, caused by internal wear. The greaseable design can sometimes reduce this noise temporarily, but replacement is the only permanent fix.
Q: I see two different part numbers listed for this ball joint-are they interchangeable?
A: Yes. 43340-39325, 39465, 39355, and 39356 are supersessions or regional variants of the same ball joint geometry. All share identical taper dimensions and mounting hole patterns.
Q: How often should I grease this joint in off-road use?
A: For vehicles used in mud, sand, or water crossings, greasing every 5,000 km or after each off-road event is recommended. For highway-only use, the standard 15,000 km interval is sufficient.
Q: Can I install this with the vehicle on jack stands, or do I need a hoist?
A: Jack stands are sufficient, but ensure the lower control arm is fully unsupported (suspension at droop) to allow the spring to extend fully. Attempting installation with the suspension loaded will make the stud impossible to insert into the knuckle.
Packaging and Shipping Module
Product Packaging
Each control arm is carefully packaged to ensure its arrival intact:
Protective Packaging: The control arm is first wrapped in a moisture-proof bag to prevent corrosion during storage and transportation. This protects the metal surface from moisture and humidity.
Foam Lining: This foam acts as a shock absorber, cushioning the control arm from impacts and vibrations during transportation.
Sturdy Carton: The control arm is placed in a high-quality corrugated carton, with foam padding filling the gaps to ensure a tight fit and prevent movement within the packaging.
Carton Labeling: Each carton is labeled with the product's original manufacturer's number, barcode, and basic product information for easy identification.
Shipping Information
International Shipping: We ship worldwide through experienced and reliable freight companies specializing in automotive parts. International shipping times vary depending on the destination and the chosen mode of transport.
Bulk Orders: For wholesale or bulk orders, we offer pallet shipping options. We can calculate the approximate number of control arms that a standard 20ft, 40ft container, or 40ft high cube (40HQ) container can accommodate, thus optimizing shipping costs.
Shipping Insurance: We recommend purchasing shipping insurance for all orders to protect goods from loss or damage during transit.
Receiving and Inspecting Goods: Please inspect the package immediately upon receipt. If there is any damage to the outer packaging, please take photos before opening and contact us immediately.
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