📌 What “Lower (Big)” Refers To
In automotive parts listings (like Tata Sumo Gold catalogs and tender/garage parts lists), terms like “lower (big)” usually describe the lower suspension or chassis component that is larger compared to a matching upper or smaller part. For Tata Sumo/Sumo Gold, “Lower (Big)” typically refers to the lower part of a suspension joint or linkage in the front suspension system, such as:
Lower Ball Joint (often listed as lower big or “big lower ball joint”)
Larger suspension mountings or bushes related to the control arm or steering knuckle
🛞 Example – Lower Ball Joint
A lower ball joint for Tata Sumo/Sumo Gold is a front suspension component that connects the lower control arm to the steering knuckle, allowing the wheel hub to pivot while supporting vertical movement. It’s often referred to in parts catalogs as “lower big” when it’s the larger of the suspension ball joints. Lower and upper ball joints work together to give controlled steering and stability to the front wheels.
Lower Ball Joint (Big): Supports the front wheel assembly’s lower connection point, handling vertical loads from the suspension and transmitting steering forces.
Often paired with an Upper Ball Joint (smaller), both working on the MacPherson or double‑wishbone front suspension.
🧰 Where It Fits
Located on the front suspension assembly of Tata Sumo Gold (which uses a double‑wishbone/coil or similar front suspension setup).
The lower (big) component is the larger lower ball joint that connects the lower control arm to the steering knuckle/hub assembly.