Do Shocks and Struts Need to Be Replaced in Pairs?

Replacing both shocks or struts on the affected axle is common when they have similar wear and one has failed. The two sides work together to control wheel and body movement. A newer damper on one side and a worn one on the other can respond differently over bumps. Ask what the shop found on each side and what the vehicle maker specifies. Monroe’s replacement guidance recommends fitting shocks and struts in axle pairs.

When is a pair the better choice?

The case is strongest when the dampers went into service together and one now leaks or performs poorly. The opposite damper has seen similar use even if it shows fewer obvious signs of wear. Ask for the findings for the front and rear separately if the estimate covers all four. A pair is the left and right of the same axle, and the correct left and right parts can have different numbers.

Can the shop replace just one shock or strut?

Tell the shop if the opposite side was recently replaced, and bring the invoice if you have it. An isolated impact to a nearly new unit or a recent exact match on the other side may change the recommendation. The shop should check the other damper, verify that the replacement matches the vehicle’s suspension package, and follow the manufacturer’s instructions. An electronic damper or a special suspension package can affect the parts or procedures required.

Ask what established the original damper’s failure. A shop can combine a ride evaluation, when safe, with checks for leakage, damage, and other causes of poor control. Monroe’s shock and strut inspection guide explains how technicians assess ride symptoms alongside physical condition.

What should be on the estimate?

Confirm the axle, quantity, and parts. For a strut job, ask whether the price includes complete assemblies or reuses springs and mounts that passed inspection. Those components affect what the quote covers. Monroe’s strut parts reference explains why mounts and protective parts can appear as separate line items.

Cooper Automotive offers steering and suspension service. If you request a side-by-side inspection, bring any prior invoices and ask whether a wheel alignment is part of the job. If the vehicle is hard to control, arrange a tow.