Suitable for Isuzu 4HG1/4HG1-T knucke RH 8973496830 8972615491

Suitable for Isuzu 4HG1/4HG1-T knucke RH 8973496830 8972615491

WW80088 Knucke RH 8973496830 8972615491 ISUZU 4HG1/4HG1-T

More Parts:

How the steering knuckle operates

I. Core Structure of the Steering Knuckle (Foundation of Operation)

1.Hub mounting surface: Connected to the wheel hub via bearings; the wheel is directly fixed to the hub, and the steering knuckle drives the hub/wheel to deflect together.

2.Steering arms (knuckle arms): Divided into "upper steering arm" and "lower steering arm," these are critical for receiving steering force and connect to the tie rods via ball joints.

3. Suspension attachment points: The upper end connects to the vehicle body via the shock absorber/spring seat, while the lower end links to the frame via the lower control arm (or strut in MacPherson suspensions). Some models also feature a sway bar attachment point.

4.Brake mounting surface: Secures the brake caliper (disc brakes) or brake drum (drum brakes) and withstands the reaction force during braking.

II. Core Operational Logic (Two Stages: Steering + Load-Bearing & Cushioning)

1. Steering Process: Transmitting Steering Force to Deflect the Wheels

• Step 1: Turning the steering wheel drives the "steering gear" (e.g., rack-and-pinion steering gear) via the steering column.
• Step 2: The steering gear converts rotational motion into linear motion, pushing/pulling the "tie rods" (left and right) forward or backward.
• Step 3: The tie rods connect to the steering knuckle’s "steering arms" via ball joints, transferring thrust/pull to the steering knuckle.
• Step 4: The steering knuckle pivots around the suspension attachment point (e.g., the strut axis in MacPherson suspensions, or the line connecting the upper and lower ball joints in double-wishbone suspensions), driving the hub and wheel to deflect (left/right turn).
• Key detail: The steering knuckle’s deflection angle is determined by the steering gear’s stroke and tie rod length, with a maximum deflection angle typically between 35°–40° to ensure the vehicle’s minimum turning radius.

2. Load-Bearing & Cushioning: Cooperating with the Suspension to Absorb Vibrations and Maintain Wheel Contact

• Load-bearing: The vehicle’s weight is transmitted from the shock absorber/spring to the steering knuckle, then to the wheel via the hub bearing, and finally to the ground.
• Cushioning: When the wheel rolls over a pothole or bump, the road impact pushes the wheel up/down → driving the steering knuckle to swing up/down around the "lower control arm ball joint" (or suspension attachment point).
• Posture maintenance: The steering knuckle’s suspension attachment points (e.g., upper and lower control arms in double-wishbone setups) limit the wheel’s movement trajectory, ensuring the wheel remains perpendicular to the ground (or maintains the preset camber/toe angle) to prevent drift and uneven tire wear.

III. Key Cooperating Components for Steering Knuckle Operation (Indispensable)

1. Tie rods + ball joints: Transmit steering force; ball joints allow the steering knuckle to deflect while moving up/down with the suspension (multi-angle movement).
2. Hub bearings: Reduce friction between the steering knuckle and hub, enabling free wheel rotation while bearing radial (weight) and axial (lateral force) loads.
3. Lower control arm/shock absorber: Provide support points and movement trajectories for the steering knuckle; the shock absorber absorbs vibrations, and the lower control arm transmits lateral forces (e.g., centrifugal force during cornering).

Our advantage
1． Quality stable, price competitive, good after-sale service
All of the products we offer are good quality with reasonable price. We focus on the product quality and after-sales services to ensure the benefit of our customers. To give customers confidence in long-term cooperation with our company.
2． Many of our products have stock, the delivery time is fast.
Our Isuzu products have a large amount of stock inventory, can save time cost for customers. The stock products we can ship within 3 days. if the product need to produce, the delivery time will be depends on the items and the quantity of the order.
3. No MOQ Request, small order acceptable.
Our ISUZU products we do not have MOQ requirements, we accept any quantity of orders from customers. Of course, the order quantity is bigger, the price will be more favorable.
4. One-stop service
We can provide to customers with other products except Isuzu parts, and we can receive goods for customers from other suppliers and make shipment.

Guangzhou DeKai Auto parts Co.LTD Is located in GuangZhou China, the distribution center of Auto parts, we specialized in ISUZU Truck spare parts, Including Engine systems, Exhaust systems, Cooling & Heating system, Pneumatic system, Chassis System, Braking systems, clutch parts, Transmission parts，Electronics Parts, Body parts and etc.
After many years efforts, Our products have got highly recognized among customers all over the world. At the same time, Our Own brand “ MGTEK“ ONUKA” “HALT” have won the favor of the consumer
we always adhere to the “Quality and Honesty ‘in order to survive, customer’s success is our success. We sincerely believe that we will be your faithful partner in China.