Honda Civic (FN2) Front Anti-Roll Bar Drop Link Replacement

Always fit drop links as a matched pair rather than singly; a car that has had only one side changed in the past will show mismatched hardware (for example a 14 mm nut on one link and a 17 mm nut on the other), which upsets balance. The night before the job, spray a penetrating fluid onto the nuts and studs at both ends of each link. A dedicated dismantling fluid such as PlusGas works far better on rusted threads than a water-dispersing product like WD-40. Give it as long as possible to creep into the threads before you start.

The easiest approach is to lift the whole front end and set both sides on axle stands, then remove both front wheels. With the full axle in the air the anti-roll bar is unloaded, so the links carry no tension and come out and go back in with little fuss; it also keeps everything aligned. If your garage only lets you reach one side at a time you can jack a single corner instead, but you will then need to unload the bar manually later. Never work beneath a car supported only by the jack.

Wire-brush the rust off the hub face and the exposed drop link fittings so tools seat cleanly and the alloy wheel is not seized to the hub. The original stud has an internal hex socket in its end; dig any packed corrosion out of that socket so the 5 mm hex key reaches its full depth. Shallow engagement is exactly what rounds these sockets out and turns an easy job into a fight.

The factory link uses a 14 mm nut with a 5 mm internal hex that stops the stud spinning. Insert the hex key and hold it; because it fouls the strut it barely needs holding, so you can concentrate on turning the 14 mm ring spanner. A cheap spanner and an old hex key tapped with a lump hammer are ideal here, since there is a genuine risk of snapping better tools. Work each nut back and forth to walk it off the thread.

If a nut will not budge, several methods work. Thermal shock: heat the nut with a blow torch to expand it, then use a straw to direct an aerosol spray into the hex hole. Any propellant that leaves the can as a cold vapour (WD-40 will do) draws heat as it evaporates and chills the stud, so the stud shrinks while the nut stays expanded and the joint breaks free; keep the flame well away from brake hoses and fuel lines. Mechanical grip: clamp mole grips or a Stilson wrench onto the ball-joint body and turn the nut with a socket. Last resort: cut the stud off with an angle grinder, a 24-tooth hacksaw blade, or a Dremel, attacking it from below the hub at the front. Cutting is fast but easily takes a finger, so protect yourself.

If you raised only one corner, prop the hub on sturdy strapped wood blocks or a second trolley jack, then lower the main jack. As the body settles the anti-roll bar relaxes until the link floats loose in its mounts. If both sides are already on stands the bar is slack from the start. Have the new link in your hand before you pull the old one, because the freed bar drifts within a minute or so and swapping straight away saves a lot of fiddling to line things back up.

Most aftermarket links come with their own bolts. The replacement bolts are 17 mm and carry 17 mm flats machined at the back of the stud so a spanner can hold it steady while you tighten, which is far better than the old internal-hex arrangement. Add a couple of M10 washers if the supplied ones look thin. Wipe a thin film of copper grease across the hub face before refitting the wheel so the alloy does not corrode solid onto the hub next time.

Tighten to the correct figures: 29 N·m on the top nut and 38 N·m on the lower one, holding the stud with a 17 mm spanner on its flats so it cannot spin. Refit the road wheel, lower the car, and torque the wheel nuts. Then repeat the whole procedure on the opposite side. With both links renewed the suspension knock should be gone and the handling noticeably sharper.