How to remove and install the radius arm tension strut on BMW 428i?

Raise the car and remove the wheel, then remove the lower engine cover; working at the left or right front bumper corner, unfasten and fold down the splash shield to access the Radius Arm bolt; for AWD, remove the front axle from the steering knuckle for clearance to remove the Radius Arm from the steering knuckle; remove the Radius Arm fasteners and lightly tap the Radius Arm mounting bolt out of the front subframe, then remove the Radius Arm nut, using a Torx socket (T40) if necessary to prevent the joint from turning; separate the ball joint from the steering knuckle and remove the Radius Arm. Caution, take care not to damage the ball joint threads if reusing the Radius Arm; reinstall in reverse order: ensure thread bores, bolts, nuts and mating surfaces are clean; install the bushing end of the Radius Arm to the subframe using new fasteners but do not tighten the nut at this time; install the Radius Arm ball joint to the steering knuckle using a new self-locking nut and tighten fully; install the wheel and lower the car; tighten the bushing end of the Radius Arm to the subframe with the car on the ground and loaded, bouncing the suspension a few times before final tightening; check vehicle alignment.

Genuine BMW 428i Radius Arm

Front Suspension Radius Arm

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3 Radius Arms found

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BMW 428i Right Wishbone
Part Number: 31126852992
$167.94 MSRP: $245.79
You Save: $77.85 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Wishbone, Right; Lower Control Arm, Rear Arm, Rear Control Arm
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2014-2016 BMW 428i | Convertible N20 Engine(F33), Convertible N26 Engine(F33), Convertible(F33), Coupe N20 Engine(F32), Coupe N26 Engine(F32)
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BMW 428i Left Wishbone
Part Number: 31126852991
$167.94 MSRP: $245.79
You Save: $77.85 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Wishbone, Left; Lower Control Arm, Rear Arm, Rear Control Arm
- Position: Driver Side
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2014-2016 BMW 428i | Convertible N20 Engine(F33), Convertible N26 Engine(F33), Convertible(F33), Coupe N20 Engine(F32), Coupe N26 Engine(F32)
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BMW 428i Push Rod
Part Number: 33326792554
$34.42 MSRP: $48.72
You Save: $14.30 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Front Bracket, Suspension Crossmember Rod
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2014-2015 BMW 428i | Convertible N20 Engine(F33)

BMW 428i Radius Arm

The BMW 428i Radius Arm functions as the key suspension component for BMW 428i models because of its dependable nature and remarkable performance abilities. The essential part links the axle to the vehicle structure and controls wheel dynamics for improved stability during safe operations. Extensive wheel motion gets controlled by the BMW 428i Radius Arm thus enabling precise handling and steering capabilities that have established it as a leading market feature. Different versions of the 428i coupe convertible and gran coupe can benefit from its safety features and improved operational efficiency through the usage of this Radius Arm design. Designed with stamped steel or aluminum materials the BMW 428i Radius Arm achieves weight minimization along with functional reliability which improves vehicle performance. Vehicle requirements determine performance through the selection of transverse and longitudinal radius arm designs available in the market. The BMW 428i showcases excellent driving performance as a member of the first-generation 4 Series because the Radius Arm supports stability control. As a fuel-efficient car with exceptional acceleration the BMW car achieves reliable performance levels through its installation of a high-quality Radius Arm which appeals to enthusiasts. As an essential component of the automaker model's framework the Radius Arm enhances the vehicle's performance by combining safe travel with thrilling control and gas mileage excellence.

If you are looking for OEM BMW 428i Radius Arm, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW 428i Radius Arm that come backed by the manufacturer's warranty.

BMW 428i Radius Arm Parts Questions & Experts Answers

Left Wishbone
31126852991
Q: How to remove and install the radius arm tension strut on BMW 428i?
A:
Raise the car and remove the wheel, then remove the lower engine cover; working at the left or right front bumper corner, unfasten and fold down the splash shield to access the Radius Arm bolt; for AWD, remove the front axle from the Steering Knuckle for clearance to remove the Radius Arm from the steering knuckle; remove the Radius Arm fasteners and lightly tap the Radius Arm mounting bolt out of the front subframe, then remove the Radius Arm nut, using a Torx socket (T40) if necessary to prevent the joint from turning; separate the ball joint from the steering knuckle and remove the Radius Arm. Caution, take care not to damage the ball joint threads if reusing the Radius Arm; reinstall in reverse order: ensure thread bores, bolts, nuts and mating surfaces are clean; install the bushing end of the Radius Arm to the subframe using new fasteners but do not tighten the nut at this time; install the Radius Arm ball joint to the steering knuckle using a new self-locking nut and tighten fully; install the wheel and lower the car; tighten the bushing end of the Radius Arm to the subframe with the car on the ground and loaded, bouncing the suspension a few times before final tightening; check vehicle alignment.