MONROE MK393 Strut Mount – Rear Axle

A clunking or knocking noise from the top of the strut tower over bumps usually points to a worn or damaged strut mount. The MONROE MK393 strut mount is a replacement part engineered for the rear axle, restoring the fit, function, and quiet, controlled operation your suspension needs on U.S. roads from coast to coast.

Key Benefits

The MONROE MK393 strut mount is manufactured to OE-matching specifications. Here’s what you get with this replacement part:

• Vibration-isolating rubber construction that keeps road noise and harshness from transferring into the cabin.
• Secure strut-to-body anchoring engineered to OE torque and mounting specifications for a direct-fit installation.
• Integrated bearing and bushing components (where equipped) for smooth steering rotation at the strut top.
• MONROE manufacturing standards, backed by a standard parts warranty against defects in material and workmanship.

Product Specifications

Every MONROE MK393 strut mount is manufactured to tight dimensional tolerances. Full technical details are listed below; always verify fitment against your vehicle’s VIN before ordering.

Monroe has been a leading name in ride control since 1916, with a long-standing reputation for engineering suspension components that meet or exceed OE specifications.

Use Cases and Applications

This rear strut mount is suited for routine suspension maintenance, pre-inspection replacement, and resolving symptoms of a worn strut-top assembly. Typical scenarios where drivers choose this part include:

• Replacing a cracked, torn, or collapsed mount identified during a routine suspension inspection.
• Eliminating a knocking or clunking noise from the top of the strut tower over bumps.
• Pairing with a new strut, shock absorber, or coil spring during a full suspension rebuild.

Because it’s engineered for rear axle applications, this part is intended to be installed as a direct axle-position match — not interchanged with the opposite end of the vehicle.

Quality Assurance and Certifications

Monroe has been a leading name in ride control since 1916, with a long-standing reputation for engineering suspension components that meet or exceed OE specifications. Each MONROE MK393 unit undergoes manufacturer quality control testing for dimensional accuracy and material durability before leaving the factory. Materials and manufacturing processes are designed to meet automotive industry durability benchmarks referenced by organizations such as the National Highway Traffic Safety Administration (NHTSA), which publishes vehicle safety and suspension inspection guidance for U.S. drivers.

Shipping and Delivery

We ship the MONROE MK393 strut mount to all 50 U.S. states with tracked, insured delivery. Most orders leave our warehouse within 1–2 business days and arrive within 3–7 business days depending on destination. Review full details on our shipping policy page, or browse our full suspension and chassis parts shop for related components.

What Customers Are Saying

“I replaced the rear axle strut mount with the MONROE MK393 and the noise was gone immediately — a big improvement over the worn part.” — Sam, Boise, ID

“Fit was exact, no modification needed. Shipping to FL took about five days.” — Nicole, Tampa, FL

Individual results may vary based on vehicle condition, driving style, and installation quality.

Frequently Asked Questions

What vehicles is this strut mount compatible with?

This MONROE MK393 strut mount is manufactured to fit the rear axle of its specified applications. Always cross-reference your vehicle’s VIN or OE part number against our fitment guide, or contact our support team through the contact page before ordering to confirm compatibility.

Is this a direct OE replacement?

Yes. The MONROE MK393 is engineered to match the fitment, mounting geometry, and performance characteristics of the original equipment part, so no additional modification is required for installation.

What does a strut mount do?

It anchors the top of the strut assembly to the vehicle’s body, absorbing vibration while allowing the strut to pivot with steering input. Worn components in this position commonly cause a clunking or knocking noise over bumps, a loose or rattly feeling from the top of the strut tower, or uneven tire wear.

Should I replace the strut assembly and coil spring at the same time?

Yes, this is generally recommended. A strut mount works together with the strut assembly and coil spring as part of the strut-top assembly, and replacing only one part can leave the others working outside their designed range. Browse our shock absorber catalog for a matching axle-position replacement.

How long does shipping take?

Orders ship nationwide to all 50 U.S. states. Standard delivery typically takes 3–7 business days depending on your location; expedited options are available at checkout. Full details are on our shipping policy page.

What is your return policy on this part?

Unused parts in original packaging can be returned within our standard return window. Review the complete terms on our warranty policy page or reach out via our contact page.

Does this strut mount come with a warranty?

Yes, this part is covered by the manufacturer’s standard warranty against defects in material and workmanship. Warranty terms are outlined on our warranty policy page.

How much does professional installation typically cost?

Labor costs vary by shop and region, but strut mount replacement is usually performed alongside other strut-top service and typically takes under an hour per axle for an experienced technician. We recommend having alignment checked after installation.

Can I install this strut mount myself?

Experienced DIY mechanics with the correct tools (including a spring compressor if the strut assembly must be disassembled) can often complete this installation at home. If you are unsure, we recommend having it installed by a certified technician.

Why is this part priced at $21.99?

Pricing reflects the MONROE brand’s manufacturing quality, materials, and engineering tier relative to other options in our catalog, while remaining competitive with comparable OE and aftermarket parts.

Do you ship to my state?

Yes, we ship to all 50 U.S. states with tracked, insured shipping on every order.

Related Parts and Resources

• Browse our full suspension & chassis catalog
• MONROE MK282 Strut Mount – Front Axle
• MONROE MK136 Strut Mount – Front Axle
• Warranty policy
• Shipping policy
• General FAQ
• About CG Auto Parts Shop

Complete Your Suspension Repair

This component is typically serviced alongside a strut assembly and coil spring — most technicians recommend inspecting or replacing related suspension parts at the same time. These shock absorbers from our current catalog are frequently purchased alongside this part:

• MONROE 376098SP Shock Absorber – Rear Axle
• MONROE D8024 Shock Absorber – Front Axle
• MONROE 23950 Shock Absorber – Rear Axle
• MONROE 23990 Shock Absorber – Rear Axle
• MONROE 376015SP Shock Absorber – Rear Axle

For general suspension maintenance guidance, the Wikipedia overview of strut suspension technology and the Federal Motor Carrier Safety Administration both publish helpful reference material on vehicle suspension safety.