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Mercury Montego Alignment Shims

Mercury Montego Alignment shims

Alignment shims start at $13.95 at AutoBuffy, where you'll find 1 options from Mevotech Supreme. An alignment shim is a precisely machined wedge or flat spacer inserted at control arm, strut, or axle mounting points to correct camber, caster, or toe angles. When shims wear, corrode, or go missing after suspension work, tire wear accelerates sharply and the Mercury Montego pulls or wanders.

Signs your Mercury Montego needs new alignment shims

  • Uneven tire wear — feathering or excessive wear on one edge of the tread that returns shortly after a fresh alignment
  • Persistent pull to one side even after a professional alignment adjustment
  • Steering wheel sits off-center on a straight, level road
  • Camber or caster readings that are out of spec and cannot be corrected within the adjuster's range of travel
  • Visible corrosion, cracking, or deformation on the existing shims during suspension inspection
  • Clunking or subtle shifting sensation at a control arm or strut mount after hitting a pothole or curb

Which alignment shim should you buy for your Mercury Montego?

The right shim depends on which angle you are correcting — camber, caster, or toe — and which mounting location on the Mercury Montego is out of range. Shims are sold in specific thickness increments, so confirming your current out-of-spec reading in degrees before ordering lets you select the correct wedge angle or stack thickness without guessing.

OE-spec flat shim
Best for
Restoring factory alignment after suspension component replacement
What you get
Exact original thickness to bring angles back to baseline; typically stamped steel or machined aluminum
Tapered wedge shim (camber/caster correction)
Best for
Dialing in camber or caster on vehicles with limited OE adjustment
What you get
A precision-ground wedge that adds a fixed degree of correction; available in several angle increments
Eccentric / slotted bolt shim kit
Best for
Maximum adjustability on strut-type front suspensions
What you get
Combines an oversized slot or cam bolt with shim plates to allow fine-tuning across a wider correction range
Rear axle toe shim
Best for
Correcting rear toe on solid-axle or twist-beam setups with no other adjustment provision
What you get
Flat or tapered shim placed between the axle housing flange and the frame mount to shift toe in or out

Alignment shims brands we stock for your Mercury Montego

Mevotech Supreme
1 option · from $13.95

Replacing alignment shims on a Mercury Montego

Moderate⏱ 1–3 hours (plus alignment rack time)Floor jack and jack standsSocket and breaker bar setTorque wrenchPry bar or alignment pin for hole alignmentWire brush and penetrating oil for corroded hardware

Raise and support the Mercury Montego safely, then remove the wheel and unbolt the control arm or strut mount fasteners at the shim location. Slide the old shim out, clean the mating surfaces, and install the new shim oriented correctly before snugging the fasteners. Torque all mounting hardware to the manufacturer's specification with the suspension at ride height, then take the Mercury Montego to an alignment rack immediately to verify and fine-tune all angles.

Frequently asked questions

How much does it cost to replace alignment shims on a Mercury Montego?
Parts start at $13.95 for a single shim or basic kit on the Mercury Montego. A full set covering all four corners costs more. Add shop labor for the alignment itself — typically one to two hours on a rack — and the total job usually runs noticeably more than the parts alone.
Can I drive my Mercury Montego with worn or missing alignment shims?
You can drive short distances, but it is not advisable. Without correct shims the Mercury Montego runs out-of-spec alignment continuously, which chews through tires unevenly, stresses wheel bearings and ball joints, and can make the vehicle handle unpredictably under hard braking or cornering. Replace them as soon as the problem is confirmed.
Do alignment shims need to be replaced every time I do suspension work on my Mercury Montego?
Not automatically, but they should be inspected every time a related component is removed. Shims that are corroded, bent, or have shifted out of position should be replaced. Reusing compromised shims makes it impossible to hold a stable alignment, and a fresh alignment will drift back out of spec quickly.
How do I know which shim thickness or wedge angle my Mercury Montego needs?
Start with a proper four-wheel alignment printout showing how many degrees each angle is out of spec. Each degree of camber or caster correction corresponds roughly to a specific wedge angle; shim manufacturers publish conversion charts. Match the required correction angle to the available increment closest to it, erring on the conservative side.
Are alignment shims a permanent fix or a temporary workaround for my Mercury Montego?
A correctly sized shim installed to factory torque specs is a permanent repair, not a patch. OE designs use shims intentionally at specific mounting points. The fix becomes temporary only if an underlying structural issue — bent control arm, damaged subframe mount — is not addressed first, causing the shim to shift or compress over time.
Will adding alignment shims on my Mercury Montego affect ride quality or handling?
Corrective shims restore the geometry the suspension was designed to run, so ride quality and handling typically improve. Running excess shim thickness beyond the specified correction range, however, can alter steering feel or introduce bump-steer. Stay within the manufacturer-recommended correction range and verify with a post-install alignment to confirm all angles are within spec.

Shop alignment shims by year for the Mercury Montego

200720062005

More parts for your Mercury Montego

Engine Timing Chain KitEngine Timing SetHeadlight Dimmer SwitchHVAC Blower MotorControl Arm Bushing KitHVAC Automatic Temperature Control (ATC) RelayEngine Exhaust Valve KitEngine Intake Valve Kit

Alignment shims for other Mercury models

Mercury VillagerMercury Sable