Genuine Mazda Rear Lower Suspension Arm Ball Joint Dust Boot • F151-28-4A3

Genuine Mazda F151-28-4A3 Rear Lower Suspension Arm Ball Joint Dust Boot

Replacement Genuine Mazda rear lower suspension-arm ball-joint dust boot for Mazda MX-5 Mk3, Mk3.5 and Mk3.75 / NC models with 1.8L and 2.0L petrol engines from 2005/2006 to 2015, together with the supported Mazda RX-8 applications listed in the compatibility table.

The flexible rubber boot fits over the ball joint within the rear lower suspension-arm assembly. It retains the joint lubricant and helps protect the internal ball-and-socket surfaces from water, road grit, dirt and other abrasive contamination.

Maintaining an intact and securely seated boot is important for protecting the joint. A split or detached boot can allow grease to escape and contamination to enter, accelerating internal corrosion and wear.

This listing supplies one Genuine Mazda dust boot. Mazda specifies two per vehicle, with one used at each applicable rear lower suspension-arm position.

Replacement may be suitable where the original boot has split, punctured, hardened, distorted or become detached, provided the underlying joint remains smooth, secure and free from excessive play. A loose, seized, corroded or worn ball joint requires replacement of the relevant suspension component rather than the boot alone.

• Part type: Rear lower suspension-arm ball-joint dust boot
• Mazda catalogue description: Boot, dust
• Primary use: Retains lubricant and protects the joint from contamination
• System: Rear suspension
• Catalogue location: Rear lower arms and subframe
• Position: Rear left or rear right, according to suspension-arm assembly
• MX-5 application: Mazda MX-5 Mk3, Mk3.5 and Mk3.75 / NC
• MX-5 engine applications: 1.8L L8-DE and 2.0L LF-VE
• Additional application: Mazda RX-8 / SE3P
• Quantity per applicable joint: One
• Quantity per vehicle: Two
• Quantity supplied: One dust boot
• Brand: Genuine Mazda
• Part No.: F151-28-4A3
• Also referenced as: F151284A3

Fitment advice: This component is catalogued within the rear lower suspension-arm and subframe assembly. Compare the boot profile, seating diameters, mounting position and retaining arrangement with the removed component before installation. Check the underlying joint for looseness, rough movement, corrosion or damage before fitting the replacement boot.

Other items to consider: When changing this part, you may also want to consider purchasing the associated rear suspension arm, joint retaining hardware, suspension-arm bushes, alignment bolts and any fasteners showing corrosion, damaged threads or excessive wear.

Useful tools / consumables: Ball-joint separator, socket set, spanners, retaining-ring tools where required, rubber-safe joint grease, non-damaging installation sleeve, cleaning solvent, lint-free cloths and a calibrated torque wrench.

Difficulty guide: DIY Difficulty: Moderate. The applicable suspension joint normally needs to be separated, and care is required to remove and install the boot without damaging its sealing lips or allowing contamination into the joint.

Why Genuine Mazda? Genuine Mazda suspension-joint boots are manufactured to the intended profile, rubber specification, sealing diameters and articulation range. Using the correct OE boot helps provide secure seating and suitable movement while protecting the original suspension joint.

What’s in the box: One Genuine Mazda rear lower suspension-arm ball-joint dust boot, part number F151-28-4A3. The suspension arm, ball joint, retaining rings, nuts and other installation hardware are not included unless specifically shown or stated separately.

Installation notes: Clean the joint and surrounding area before removing the original boot. Prevent dirt from entering the exposed joint and inspect it for free play, roughness or corrosion. Replenish only with an appropriate lubricant where required. Seat the replacement boot evenly without puncturing, stretching or twisting it, install the correct retainer and tighten all disturbed suspension fasteners to the applicable Mazda specification.