Parts for your 2018 Mitsubishi Outlander-Harmonic balancers

2018 Mitsubishi Outlander harmonic balancer — what it does and when to replace it

Yes, the 2018 Mitsubishi Outlander is fitted with a harmonic balancer. Mitsubishi’s factory service information and the official ASA parts catalogue list a crankshaft pulley that incorporates a torsional vibration damper (often called a harmonic balancer) across the 2018 Outlander petrol range — including the 2.0L petrol in the PHEV, the 2.4L MIVEC four-cylinder, and the 3.0L V6. Major aftermarket catalogues (e.g., Gates and Dayco) also list a vibration damper/crank pulley for these engines, confirming fitment.

On a 2018 Outlander, the harmonic balancer sits on the nose of the crankshaft and doubles as the crank pulley for the auxiliary belt. Its job is to absorb and cancel the crank’s torsional vibrations, protecting the crankshaft, timing components and accessory drive from fatigue. The balancer uses a rubber-bonded inertia ring to damp those pulses, when the rubber ages, hardens or delaminates, vibrations rise and the pulley can wobble or separate. Left unchecked, that can throw the belt, affect charging and cooling, and in worst cases damage the crank nose.

It’s not a scheduled replacement item, but it should be inspected during routine servicing. Under the bonnet, look for perished or cracked rubber between the hub and outer ring, any signs of the ring “walking” or wobbling, belt misalignment, dark rubber dust, or oil contamination around the pulley. Listen for a chirp, squeal or rhythmic knock at idle that changes with revs, and note any new buzz felt through the cabin. Oil leaks from the front crank seal or from above will accelerate rubber deterioration, so sort any leaks promptly.

If replacement’s needed, use a proper puller and installer — never lever on the outer ring or belt ribs. Align the keyway carefully, follow Mitsubishi’s workshop torque specs for the crank bolt, and fit a new bolt/washer if the manual specifies one. It’s a good time to renew the auxiliary belt and check the tensioner and idlers. On V6 models, the balancer is removed during timing belt service, so consider replacing it preventatively if the rubber shows age. On the 2.0/2.4 chain-driven engines, replacement is typically condition-based. Choose quality OEM or reputable aftermarket dampers to maintain correct mass and damping rate.

Bottom line: a healthy harmonic balancer keeps the Outlander smooth, protects the engine, and prevents annoying belt dramas. A quick check at each service can save a roadside headache.

Do all 2018 Outlander models have a harmonic balancer?

They do. Mitsubishi’s service manual and ASA parts listings show a torsional vibration damper built into the crankshaft pulley on the 2.0L (PHEV), 2.4L four-cylinder and 3.0L V6 engines used in 2018 models.

What are the signs the harmonic balancer needs replacing?

Look and listen for cracked or separated rubber, pulley wobble, belt misalignment, a chirp/squeal at idle that tracks engine speed, new vibration through the cabin, or dark rubber dust around the pulley. Oil-soaked dampers are also suspect.

Is it safe to drive with a failing harmonic balancer?

Best not. A deteriorating balancer can shed its outer ring or throw the auxiliary belt, leading to loss of charging and potential overheating. Continued driving also risks damage to the crankshaft nose and keyway.