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Infiniti M56 Trunk Lid Lift Supports

Infiniti M56 Trunk lid lift supports

Trunk lid lift supports for your Infiniti M56 start at $11.95, with 3 options in stock from FCS and Tuff Support. These gas-charged struts hold the trunk lid open hands-free while you load and unload. When they fail, the lid falls unexpectedly — a safety hazard and a frustration that gets worse over time.

Signs your Infiniti M56 needs new trunk lid lift supports

  • Trunk lid drops slowly or slams shut on its own instead of staying open
  • Lid only stays open if propped with a stick or held by hand
  • Visible oil streaking or wet residue on the strut body — a sign of gas seal failure
  • Trunk feels unusually heavy or requires extra force to lift fully
  • Strut body is bent, corroded, or the end fittings are cracked or separated
  • Lid drifts down gradually over several minutes rather than holding a fixed position

Which trunk lid lift supports should you buy for your Infiniti M56?

The main decision is whether to match OE lift force or upgrade. Lift supports are rated in Newtons — too weak and the lid won't stay up, too strong and it opens too aggressively or strains the hinges. Always replace both supports at the same time, even if only one has failed visibly, because they wear at similar rates.

OE-Equivalent Replacement
Best for
Restoring factory behavior exactly
What you get
Matched lift force and stroke length; direct bolt-on fit; no adjustment needed
Heavy-Duty / Extended-Life
Best for
High-use vehicles or harsh climates
What you get
Reinforced seals, thicker gas charge, longer service life; same mounting as OE
Left Side Only
Best for
One-side failure confirmed by inspection
What you get
Single strut at lower cost; practical only when the other strut is recent and healthy
Complete Pair / Kit
Best for
Both struts worn or unknown replacement history
What you get
Matched force balance across both sides; best value and safest long-term outcome

Trunk lid lift supports brands we stock for your Infiniti M56

FCS
2 options · from $11.95
Tuff Support
1 option · from $16.95

Replacing trunk lid lift supports on a Infiniti M56

Easy⏱ 20–45 minutesFlat-blade screwdriver or trim pry tool (for clip-style end fittings)Socket set and ratchet (for bolt-style mounts)Safety prop rod or helper to hold trunk lid openNeedle-nose pliers (to remove retaining clips if present)

Prop the trunk lid securely open before touching any hardware. Remove the old strut by releasing the end fittings — clip types pry off with a flat tool, bolt types unscrew with a socket — then snap or bolt the new strut into place at both ends. Repeat on the second side, then lower and raise the lid several times to confirm it holds position evenly.

Frequently asked questions

How much does it cost to replace trunk lid lift supports on a Infiniti M56?
Parts start at $11.95 for the Infiniti M56 and most drivers replace them as a pair. Labor is minimal — typically under an hour at a shop — making this one of the more affordable exterior repairs. Doing it yourself brings total cost down to just the parts.
Can I drive my Infiniti M56 with a failed trunk lift support?
Yes, a failing lift support does not affect driveability, but it is a safety risk. A trunk lid that drops without warning can injure hands, arms, or anyone standing nearby. Replacing the supports promptly is low cost and eliminates that hazard entirely.
How long do trunk lid lift supports last on a Infiniti M56?
Most lift supports last several years under normal use, but lifespan depends on climate, trunk usage frequency, and strut quality. Cold weather shortens gas-charge life noticeably. If your Infiniti M56 is more than a few years old and the lid is sluggish, the supports are likely due for replacement.
Do I need to replace both trunk lift supports at the same time on my Infiniti M56?
Replacing both is strongly recommended. Even if only one has failed, the other is the same age and will typically follow within a short time. Mismatched struts cause uneven lid force, which can stress hinges and trim. Buying a pair also costs less per strut than two separate purchases.
Is replacing trunk lid lift supports on a Infiniti M56 a DIY job?
Yes — it is one of the more beginner-friendly exterior repairs. The struts clip or bolt onto ball-stud mounts at each end and require no special tools beyond basic hand tools. The most important precaution is safely propping the trunk lid open before starting so it cannot fall during the swap.
How do I know which lift support fits my Infiniti M56?
Fit is determined by strut length, stroke, Newton force rating, and end-fitting type — all of which vary by generation. Use the year, make, and model of your Infiniti M56 to filter results, and confirm the strut count your trunk uses (most use two). AutoBuffy's fitment filter handles this automatically for the Infiniti M56.

Shop trunk lid lift supports by year for the Infiniti M56

201320122011

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Trunk lid lift supports for other Infiniti models

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