FPT N-67 Marine Diesel Service: Expert maintenance, diagnostics, and repowers for Ventura, Oxnard, Channel Islands Harbor & Santa Barbara by 805 Marine Mechanic — your inboard marine diesel specialists.
FPT N-67 Marine Diesel Engine Specifications, serviced by trained technicians at 805 Marine Diesel Mechanic. Servicing Ventura, Oxnard, Channel Islands Harbor & Santa Barbara. FPT Boat Mechanic.
Why boat owners choose the FPT N-67
- High power & torque density in a compact, inline-6 package
- Low fuel consumption and reduced emissions
- Structural stiffness for lower vibration and noise
- Service intervals up to 600 hours under proper operation
The FPT N-67 combines Italian engineering with proven marine durability. It’s built for quiet, efficient propulsion across a wide range of commercial and recreational applications throughout Ventura County and the Santa Barbara Channel. Owners value its balance of specific output and longevity, especially when engines rack up hours on charter schedules, patrol runs, or multi-day trips to the outer islands.
General specifications
- Engine model: FPT N-67
- Configuration: Inline 6-cylinder, 4 valves per cylinder
- Displacement: 6.7 L
- Bore × stroke: 104 × 132 mm
- Aspiration: Turbocharged with aftercooler
- Fuel system: Common-rail electronic injection
- Electrical: 12V or 24V options
With a modern common-rail system, the N-67 achieves fine atomization and precise timing, improving throttle response and keeping smoke low under transient loads. A robust block and bedplate design contributes to stiffness, which limits vibration, protects mounts and couplings, and reduces fatigue on nearby equipment.
Performance & power ratings
Power output options
- 370 HP (272 kW) @ 3000 RPM
- 420 HP (309 kW) @ 3000 RPM
- 480 HP (353 kW) @ 3000 RPM
These ratings allow installers to match duty cycles, from pleasure craft seeing intermittent WOT, to commercial vessels cruising at steady load day after day.
Maximum torque
- 1228 Nm @ 1800 RPM (370 HP)
- 1355 Nm @ 1800 RPM (420 HP)
- 1515 Nm @ 1800 RPM (480 HP)
High torque at modest RPM helps the boat climb onto plane and hold speed in chop without excessive fuel burn.
Actual fuel burn depends on propeller load, hull condition, and duty cycle. We can baseline your N-67 with sea‑trial data and optimize for your route profile.
Dimensions, weight & systems
| Item | Specification |
|---|---|
| Length × width × height | ~1222 × 754 × 974 mm |
| Dry weight | ~650 kg (varies by rating & accessories) |
| Cooling | Heat‑exchanger (closed loop) with raw‑water circuit |
| Coolant capacity | ~25 L (installation dependent) |
| Oil capacity | ~16 L (model dependent) |
| Emissions | IMO Tier II, with Tier III options as applicable |
Compact external dimensions improve service access in tight engine rooms. The heat‑exchanger layout is compatible with keel‑cooling alternatives where required.
Marinization: designed for the mission
MARINIZATION — Lay‑out and specific settings are focused on marine duties. Both engine and turbocharging cooling systems are optimized for the mission. To make installation easier (and help prevent leakage), the oil cooler, oil pump, water pump, and blow‑by system are integrated into the engine design.
Reliability & serviceability — Plateau‑machined cylinder walls and oil‑cooled pistons reduce wear. Up to 600 hours between oil and filter changes helps minimize downtime, especially for commercial operators in Channel Islands Harbor and Ventura.
Tip: Pair the N‑67 with quality engine mounts and align shafting to spec after launch. Re‑torque mounts post‑sea‑trial when the rubber settles for the quietest ride.
Expert FPT N‑67 service in Ventura County & beyond
At 805 Marine Diesel Mechanic, our factory‑trained techs support N‑67 installations across Ventura Harbor, Oxnard, Channel Islands Harbor, and Santa Barbara with:
- Routine maintenance — oil & filters, coolant service, valve checks, belts/hoses
- Engine diagnostics — ECU scans, sensor testing, injector pop‑tests
- Repairs & overhauls — injectors, turbos, pumps, top‑end work
- Repower projects — alignment, controls integration, commissioning
- Emergency dockside repairs — fast turnaround to get you back underway
We bring a diesel‑only focus to every job—no gasoline or outboard work—so your inboard receives specialized attention from techs who do this every day.
Efficiency, reliability & emissions
The N‑67’s common‑rail injection and precise turbo‑aftercooler pairing deliver clean combustion and strong specific output. For owners operating in sensitive waters or regulated routes, Tier III options and careful prop‑load matching help meet environmental targets without sacrificing performance.
In real‑world duty, we often find that modest pitch adjustments and attention to bottom condition create outsized gains in fuel economy. Our team can pull sea‑trial logs, plot fuel‑flow against speed, and recommend propeller tweaks or hull maintenance intervals to keep you in the sweet spot.
Owner maintenance tips for the Santa Barbara Channel
Monthly checks
- Inspect raw‑water strainer after kelp‑heavy trips
- Verify coolant level/condition; top with approved mix
- Clean battery terminals; check charge state
- Look for salt crust around cooler end caps and hose barbs
Seasonal service
- Pre‑summer cooler cleaning & pressure test
- Mid‑season fuel filtration refresh for charter/commercial use
- Winterization for lay‑ups to reduce corrosion risk
- Alignment check after haul‑out or hard docking events
Keep a simple log: engine hours, filter dates, coolant changes, and any temperature/pressure anomalies. Patterns reveal issues early.
Installation considerations & prop matching
Correct installation makes the difference between a good engine and a great propulsion system. We verify shaft angles, align couplings within tolerance, and ensure cooling water routing minimizes air‑entrapment. On planing hulls, match the prop to hold recommended WOT RPM with a light load; this leaves margin for growth and heavy days. On displacement and semi‑displacement hulls, we target a continuous duty point in the fat of the torque curve to protect the engine from chronic overloading.
- Confirm ventilation for combustion and alternator cooling—avoid hot‑soak after long idle.
- Mount the raw‑water strainer at/below waterline with straight, short suction hose runs.
- On electronic controls, validate throttle mapping so helm inputs translate linearly.
- Log WOT and cruise data after commissioning (speed over ground, fuel burn, EGT if available).
Case study: Channel Islands charter upgrade
A sportfisher based in Channel Islands Harbor reported sluggish acceleration and rising fuel burn mid‑season. After borescope inspection, injector balance checks, and a cooler descale, we sea‑trialed with calibrated fuel‑flow. A small propeller pitch reduction, fresh bottom, and ECU parameter verification restored cruise efficiency. Result: quicker time‑to‑plane, smoother mid‑range, and double‑digit percentage fuel savings on their common routes to Anacapa and Santa Cruz.
Helpful links
- FPT N‑67 Marine Diesel Engine Specifications (site reference)
- FPT Boat Mechanic — local service page
FPT N‑67 — Frequently asked questions
How often should I service my N‑67?
Under typical use, oil & filters at up to 600 hours. Local conditions, high idle time, or heavy commercial duty may shorten intervals. We’ll tailor a plan to your hours and mission.
Do you support repowers and ECU calibration?
Yes. We handle repowers end‑to‑end and perform diagnostics/parameter checks to ensure proper mapping and performance.
Do you offer mobile dockside service?
Yes — Ventura Harbor, Oxnard, Channel Islands Harbor, and Santa Barbara Marina.
Do you work on gas or outboards?
No. 805 Marine Mechanic specializes in inboard marine diesel only.
Ready to book service?
From Ventura to Santa Barbara, our mobile inboard diesel team brings factory‑trained care to your slip. We’ll evaluate your N‑67, baseline performance, and build a maintenance plan that keeps you on schedule and under budget.