Parts for your 2017 Mitsubishi Asx-Harmonic balancers

2017 Mitsubishi ASX Harmonic Balancer

Technical documentation confirms the 2017 Mitsubishi ASX is fitted with a harmonic balancer (also called a crankshaft damper). Mitsubishi Motors’ ASX/RVR workshop manual for the GA/GM platform (Section 11 – Engine, 4B1/4N1) identifies the crankshaft pulley as an elastomer-bonded torsional damper, and the Mitsubishi ASA electronic parts catalogue for 2017 ASX (GA2W/GM2W) lists a “Damper, crankshaft” for both the 2.0L petrol (4B11) and diesel engines. Major aftermarket catalogues for this model year also specify replacement harmonic balancers, reinforcing its use on the vehicle.

On the 2017 ASX, the harmonic balancer’s job is to soak up the crankshaft’s torsional vibrations so everything runs smoother and lasts longer. It’s essentially a two-piece crank pulley with a rubber layer in between, tuned to the engine’s firing pulses. That rubber ring quietens vibration, protects the crank, and keeps the accessory drive happy, so the alternator, A/C, and water pump don’t cop extra punishment.

There’s no fixed replacement interval, but it’s smart to treat the balancer as an inspect-and-replace-on-condition item during routine servicing. Any time the drive belt is off—say at 60,000–100,000 kilometres or when swapping an alternator—give the balancer a close look. If the rubber is cracked, perished, bulging, oil-soaked, or starting to separate, it’s time to replace it. A wobbling pulley, chirping belt at idle, new vibrations through the cabin, or intermittent charging/A/C performance are all classic signs the damper is on the way out.

When replacing, stick with a quality damper designed for the ASX’s engine—avoid solid or lightweight underdrive pulleys, as they delete the damping the crank relies on. Follow the workshop manual procedure: use the correct holding tool, don’t lever against the casing, and fit a new centre bolt if specified. Correct torque and angle tightening matter here, as does a fresh belt if the old one is contaminated or glazed. If there’s oil weeping from the front crank seal or a tired engine mount, sort those at the same time—they can quickly undo a new balancer.

Owners who keep the balancer in good nick tend to notice a calmer idle, fewer belt dramas, and less wear on accessories. It’s a small part with a big say in how refined and reliable an ASX feels under the bonnet.

• Inspect at each drive-belt service or if new vibrations appear.
• Replace if rubber shows cracking, swelling, separation, or oil damage.
• Use proper tools and specs, choose OEM or reputable aftermarket.

Popular questions about 2017 Mitsubishi ASX harmonic balancers

Does the 2017 ASX definitely have a harmonic balancer?
Yes. Mitsubishi’s ASX/RVR workshop manual (Engine Section 11 for 4B1/4N1) describes the crankshaft pulley as an elastomer damper, and the Mitsubishi ASA parts catalogue lists a crankshaft damper for 2017 ASX engines. Reputable aftermarket catalogues also supply a dedicated harmonic balancer for this model.

What are the warning signs the harmonic balancer needs replacement?
Look for a wobbling pulley, belt squeal or chirp at idle, fresh vibrations through the cabin, flickering charge light, or visible cracking, swelling, or separation in the rubber layer. Oil contamination on the pulley or rubber is another red flag—address the leak and replace the damper.

Is it safe to keep driving if the balancer is failing?
Not recommended. A deteriorating damper can shed the belt, upset charging and cooling, or in extreme cases damage the crankshaft nose. If symptoms show up, park it and book a replacement before it escalates.