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Infiniti Q50 Turbocharger Oil Lines

Infiniti Q50 Turbocharger oil lines

Turbocharger oil lines for your Infiniti Q50 start at low prices, with multiple options in stock from top OE-quality brands. The turbo oil line feeds pressurized, filtered engine oil to the turbocharger's center housing to lubricate and cool the shaft bearings. A cracked, clogged, or leaking line starves the turbo of oil within seconds, causing catastrophic bearing failure and a ruined turbocharger.

Signs your Infiniti Q50 needs a new turbocharger oil line

  • Blue or white smoke from the exhaust under boost, indicating oil burning inside the turbine housing due to bearing wear from oil starvation
  • Visible oil wetness, seeping, or dripping along the metal or braided line between the engine block and turbo center section
  • Oil puddle or residue on the underside of the turbo or on the exhaust manifold after the engine has sat overnight
  • Turbo whine, grinding, or rattling noise that worsens with throttle input, pointing to inadequately lubricated shaft bearings
  • Oil pressure warning light or low oil level with no obvious external leak on the engine block itself
  • Reduced boost pressure or sluggish throttle response caused by a partially collapsed or internally restricted feed line

Which turbocharger oil line should you buy for your Infiniti Q50?

The right turbo oil line depends on whether you need the feed line (high-pressure supply from the block) or the return line (low-pressure gravity drain back to the sump), and whether your application is stock or modified. OEM-equivalent lines are engineered for exact routing and connector fitment on the Infiniti Q50, while upgraded braided stainless lines suit higher heat or boosted performance builds. Always confirm the line position and fitting thread size before ordering.

OEM-Replacement Feed Line
Best for
Daily drivers restoring stock reliability
What you get
Exact-fit banjo or flare fittings, factory-spec inner diameter, and heat-resistant outer sleeve matched to the Infiniti Q50's routing
OEM-Replacement Return Line
Best for
Fixing oil drain-back leaks or collapses
What you get
Correct low-pressure hose or hard-line with stock flange connectors to ensure gravity drainage back to the pan without restriction
Braided Stainless Feed Line (AN fittings)
Best for
Modified or high-boost Infiniti Q50 builds
What you get
Stainless overbraid over PTFE inner core, rated for higher pressures and temperatures, with reusable AN fittings for custom routing
Complete Oil Line Kit (Feed + Return)
Best for
Full turbo rebuilds or replacement installs
What you get
Both lines supplied together, often with new crush washers and O-rings, eliminating the risk of mismatched hardware on the Infiniti Q50

Replacing turbocharger oil lines on a Infiniti Q50

Moderate⏱ 1–2.5 hoursCombination wrench set or flare-nut crowfoot wrenchesSocket set with extensionsDrain pan for residual oilTorque wrenchThread-cleaning tap or wire brush for block and turbo fittings

Begin by allowing the engine to cool completely, then drain residual oil from the lines using a drain pan before loosening the banjo bolt or flare fitting at both the engine block and the turbocharger center housing. Clean the seating surfaces on both ends, install the new line with fresh crush washers or O-rings, and snug the fittings firmly without over-tightening, which can crack banjo housings. After installation, idle the engine for several minutes and inspect both ends for seepage before driving the Infiniti Q50 under load.

Frequently asked questions

How much does it cost to replace turbocharger oil lines on a Infiniti Q50?
Parts start at low prices for a single line on the Infiniti Q50. A complete feed-and-return kit costs more but is often worth buying at once. If a shop performs the work, labor adds to the total since turbo lines can be buried under intake components or heat shielding, making access time the biggest variable.
Can I drive my Infiniti Q50 with a leaking turbo oil line?
No. Even a slow seep at the feed line can drop oil volume to the turbo bearings fast enough to score the shaft within minutes of driving under boost. Continued use risks destroying the turbocharger entirely, turning a low-cost line replacement into a major repair. Stop driving and fix the leak first.
What causes turbocharger oil lines to fail on a Infiniti Q50?
Heat cycling is the primary cause — the line expands and contracts thousands of times and the outer sleeve or metal fittings eventually crack or loosen. Carbon and sludge buildup from infrequent oil changes can also block the narrow internal bore of the feed line, starving the turbo even when the line looks intact externally.
Do I need to replace both the feed and return line at the same time on my Infiniti Q50?
Not always required, but strongly recommended during a turbo replacement or rebuild. If one line has failed due to age or heat damage, the other has lived the same hard life. Replacing both at once on the Infiniti Q50 eliminates a second teardown shortly after and ensures no weak link remains in the lubrication circuit.
Will a clogged turbo oil feed line always show a warning light on a Infiniti Q50?
Not reliably. The engine's main oil pressure sensor measures pressure at the block, not at the turbo fitting. A partially blocked feed line can read normal system pressure while delivering insufficient flow to the turbocharger center housing. The first symptom is often bearing noise or smoke, by which point bearing damage is already underway.
Are there crush washers or sealing rings I need to replace with the oil line on my Infiniti Q50?
Yes, and skipping them is a common source of leaks after installation. Banjo-style feed line bolts use soft aluminum or copper crush washers that deform once torqued and cannot seal properly if reused. Always install new crush washers — most quality replacement lines for the Infiniti Q50 include them, but confirm before purchasing.

More parts for your Infiniti Q50

Ignition Knock (Detonation) SensorCV Joint BootExhaust Pipe Flange GasketEngine Crankshaft SealA/C Refrigerant Discharge HoseFuel InjectorDirect Ignition Coil BootEngine Oil Pan

Turbocharger oil lines for other Infiniti models

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