Parts for your 2017 Nissan Serena-Gas struts

2017 Nissan Serena gas-struts: fitted, what they do, and when to replace

Based on technical documentation and parts catalogues, gas-struts are absolutely relevant to the 2017 Nissan Serena (C27). Nissan’s C27 Serena Service Manual (Body Exterior – Back Door) specifies a gas‑charged “back door stay” for the tailgate, with handling warnings typical of pressurised struts. The Nissan Electronic Parts Catalogue for the C27 also lists a Stay Assy–Back Door. Major aftermarket catalogues list tailgate gas springs for Serena C27 (2016‑on), including variants for the dual back door (flip‑up glass). The bonnet on most C27 trims uses a prop rod rather than gas-struts, so the struts apply to the tailgate and, where fitted, the upper glass panel.

On the Serena, gas-struts counterbalance the weight of the tailgate (and the flip-up glass on dual back door models), making it easy to lift and keeping it safely open. They’re sealed, nitrogen‑charged dampers that add controlled lift assistance and smooth closing, even on vehicles with power tailgate features—the motor does the driving, but the struts carry the mass and damping.

Over time, seals harden and gas pressure fades, especially with heavy use or cold weather. When that happens, the door feels heavier and may drift down—never ideal with kids or cargo under the tail. Common signs the Serena’s gas-struts are due:

• Tailgate won’t stay fully up or sags in wind or cold.
• Needs two hands to lift, or lifts jerkily.
• Oil mist on the shaft or body, or visible corrosion at the ball sockets.

Service advice for owners and fleets:

• Replace in pairs to keep lift and damping balanced.
• Support the tailgate with a prop or a helper during replacement—these doors are heavy.
• Match the exact spec: body style (with/without dual back door), trim, and any power tailgate system. Force rating and length must be correct.
• Keep the chrome shafts clean