Replacing engine mounts is not a quick weekend fix for most casual DIYers, but it is a manageable repair for a capable enthusiast or a professional shop. Expect several hours of work, and more if access is tight or multiple mounts are involved. Engine mounts dampen vibration and keep the engine in place, so worn mounts can cause clunks, rough idle, and noticeable engine movement.
What engine mounts do and why replacement matters
Engine mounts secure the engine to the chassis and absorb vibration to protect the powertrain and surrounding components. When mounts wear or crack, you may notice increased vibration, noises during acceleration or shifts, and occasional movement of the engine in the bay. Replacing worn mounts helps restore smoothness, prevent collateral wear to transmission and exhaust components, and can improve overall drivability.
Before you dive into the replacement, it helps to understand the key factors that influence how hard the job will be and what it will cost.
- Vehicle layout and engine orientation (transverse/front-wheel drive vs. longitudinal/RWD) affect access paths and which mounts are involved.
- Number and type of mounts to replace (engine mount, transmission mount, torque strut, dogbone, or multiple mounts) determine scope and sequence.
- Accessibility and required disassembly (availability of space, whether subframes, exhaust components, or other parts must be moved) impacting time and complexity.
- Engine size and torque output; higher-torce setups can place greater loads on mounts and may require careful re-torquing and run-in checks.
- Need to support the engine during removal; some cars require a dedicated engine support tool or hoist and a precise procedure to avoid engine movement.
- Corrosion and bolt conditions; seized fasteners or damaged mounting studs can extend the job and require extra steps or special tools.
- Availability of replacement mounts and OEM vs aftermarket options; some vehicles have multiple supported part numbers or non-serviceable mounts.
In practice, the job is straightforward on many modern cars but can become lengthy and more specialized on SUVs, trucks, or performance models with tighter engine bays or more mounts.
What to expect during replacement
The following steps represent a typical replacement process. Exact procedures vary by model, but this sequence covers common practices used by shops and experienced DIYers.
- Diagnose and confirm which mounts need replacement and inspect surrounding components for wear or damage.
- Safely lift and support the vehicle on ramps or stands, using proper jack points and stands.
- Remove obstacles that block access to the mounts (covers, shields, exhaust components, air intake, or nearby accessories).
- Support the engine or transaxle with a suitable engine support tool or jack to prevent movement during mount removal.
- Unbolt and remove the worn mounts; inspect mating surfaces and hardware; replace any damaged fasteners as needed.
- Install the new mounts and tighten to the manufacturer’s torque specs, usually following a specific sequence to avoid misalignment.
- Reassemble any components removed and verify proper clearance and alignment.
- Lower the vehicle, start the engine, and perform a cautious test drive to listen for abnormal noises or vibrations; address any issues as needed.
- Recheck torque and system condition after a short run-in period and document any warranty or service requirements.
Because some vehicles require subframe work, engine-support adjustments, or exhaust/system disassembly, the exact process can vary and may extend the time and complexity of the job.
Time, cost and practical considerations
Budgeting for engine mount replacement depends on whether you DIY or hire a pro, and on the vehicle’s specifics. Here is a rough guide to typical costs and time.
- Parts: Engine mounts generally range from about $50 to $300 per mount; most cars with three mounts fall in the $150–$900 total for parts, depending on brand and whether you choose OEM or aftermarket options.
- Labor: In a shop, expect roughly 2–6 hours per mount; many jobs involving multiple mounts or difficult access can total 4–8 hours or more. Hourly rates commonly run from about $75 to $150+ depending on location and shop tier.
- Total estimate: Parts plus labor commonly fall between $300 and $1,500, with dealer labor and OEM parts on the higher end.
- Warranties: Most parts come with a warranty (often 1–3 years), while labor warranties vary by shop and region.
When planning, also consider ancillary checks—misalignment or a worn related mount can cause vibration even after replacement. Request a written estimate that outlines included checks, replacement parts, labor, and warranty coverage.
Summary
Engine mount replacement is a routine, but sometimes time-consuming, repair. For many cars it’s well within the capability of a skilled DIYer or a professional technician; for others with confined engine bays or multiple mounts, the job can be more involved. If you notice noticeable vibration, clunks, or engine movement, have a trained technician inspect the mounts and provide a detailed quote. Proper replacement protects the engine and drivetrain and helps maintain smooth operation and long-term reliability.