Genuine Mazda Front Lower Suspension Arm / Wishbone – RH • NE51-34-300D

Genuine Mazda NE51-34-300D Right-Hand Front Lower Suspension Arm / Wishbone

Replacement Genuine Mazda right-hand front lower suspension arm for Mazda MX-5 Mk3, Mk3.5 and Mk3.75 NC models, including fabric soft-top and Power Retractable Hard Top vehicles.

The lower suspension arm connects the lower section of the right-hand front steering knuckle to the front subframe. It locates the wheel accurately while allowing controlled vertical suspension movement and steering articulation.

The inner suspension bushes allow the arm to pivot as the suspension moves, while the integrated lower ball joint connects the outer end of the arm to the steering knuckle.

Together, these components help maintain the intended wheel position, castor, camber and toe geometry. Wear or distortion can affect steering precision, braking stability, tyre wear and the vehicle’s ability to retain correct wheel alignment.

This is a complete right-hand lower arm assembly supplied with its suspension bushes and lower ball joint installed. One right-hand arm is fitted per vehicle. Mounting bolts, nuts and wheel-alignment work are not included.

• Part type: Front lower suspension arm assembly
• Common names: Lower wishbone / lower control arm
• Mazda catalogue description: Arm (R), Lower
• Position: Right-hand front
• UK position: Offside front
• Handed component: Yes
• Suspension bushes included: Yes
• Lower ball joint included: Yes
• Mounting bolts and nuts included: No
• Quantity fitted in this position: 1
• Quantity supplied: 1 complete arm assembly
• Body-style compatibility: Fabric soft top and PRHT
• Brand: Genuine Mazda
• Part No.: NE51-34-300D
• Earlier Mazda references: NE51-34-300B / NE51-34-300C
• MX-5 fitment: Mk3, Mk3.5 and Mk3.75 NC models

Possible signs of a worn or damaged lower arm:

• Knocking or clunking from the right-hand front suspension
• Movement or play in the lower ball joint
• Split, separated or deteriorated suspension bushes
• Uneven or accelerated front tyre wear
• Vague steering or reduced directional stability
• Vehicle pulling under braking
• Wheel alignment moving outside specification
• Arm bent following kerb, pothole or accident damage
• Corrosion or damage around the bush or ball-joint housings

Fitment advice: This listing is for the right-hand front lower arm. Confirm the required side before ordering. The vehicle should retain the original Mazda NC front subframe, steering knuckle and suspension arrangement.

Other items to consider: Inspect the left-hand lower arm, both upper suspension arms, ball joints, suspension bushes, shock absorbers, springs, anti-roll bar links and all associated mounting and alignment hardware. Replace any bolt or nut with stretched, damaged or heavily corroded threads.

Useful tools / consumables: Suitable socket and spanner set, breaker bar, ball-joint separator, calibrated torque wrench, penetrating fluid, suspension support equipment and suitable marking tools for recording the original alignment-bolt positions.

Difficulty guide: DIY Difficulty: Advanced. The steering knuckle and suspension must be supported correctly during removal. Alignment hardware may be seized, and fasteners passing through bonded rubber bushes should receive final tightening at the specified normal ride-height position.

Why Genuine Mazda? Genuine Mazda suspension arms are manufactured to match the original arm geometry, bush positions, ball-joint taper and alignment mounting dimensions. Correct geometry is essential for maintaining the intended steering response, wheel location and suspension operation.

What’s in the box: One Genuine Mazda right-hand front lower suspension arm assembly, part number NE51-34-300D, complete with suspension bushes and lower ball joint.

Installation notes: Raise and support the vehicle safely, then support the steering knuckle before disconnecting the lower ball joint and inner arm mountings. Record the original alignment-bolt positions before removal. Inspect the mounting bolts, eccentric washers, subframe brackets and steering-knuckle taper before fitting the replacement arm. Start all hardware by hand and tighten the ball-joint fastening to the applicable Mazda specification. Final-tighten fasteners passing through bonded rubber bushes with the suspension positioned at the specified normal ride height. Carry out a complete four-wheel alignment after installation.