Welcome Aboard!

10% savings across all ranges sitewide for new customers · Terms apply

FLASHSALE26

Volvo Penta 390HP 4-Stroke Marine Engine Parts

(1 products)

This page supports Volvo Penta 4‑Stroke 390 HP marine engines by helping you find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Volvo Penta collection. Scroll to the bottom to start browsing parts for this engine, and remember you can use the collection’s “Filter & Sort” controls to narrow results by horsepower, year range, and part category.

Browse All Volvo Penta Parts

How to Identify Your 390HP Model

  • Locate the identification plate: Volvo Penta places a metal tag on the engine (typically on the intake manifold, rocker cover area, or flame‑arrestor bracket) and on the drive/transom shield. Record the full model name and the product/serial number.
  • Read the model code and suffix: Gasoline V8 model names often include displacement and fuel system (e.g., 8.1GXi). The suffix (e.g., -B, -C, -D, sometimes with an extra F for factory freshwater cooling) denotes revision differences that affect parts.
  • Note control/system features: Some later engines include electronic shift/throttle systems; electronics and cooling components may differ by model revision.
  • Confirm the drive model for gearcase parts: SX/DP series (e.g., SX‑A, DP‑S, DPH) require drive‑specific impellers, anodes, seals, and propeller hardware. Record the exact drive designation from the transom shield tag.

Engine Platform Overview

V8 Gasoline EFI — 8.1L (Typical output range ~375–420 HP)

Feature Description
Configuration EFI 4‑Stroke V8 sterndrive/inboard, raw‑water or factory freshwater‑cooled variants
Common Models Examples include 8.1Gi / 8.1GXi families with revision suffixes (e.g., -C, -D, -E; “F” indicating factory freshwater cooling)
Advantages Strong torque, steady charging output, and robust cooling flow for heavy boats and high‑load operation
Notes Match parts by full engine model and suffix; verify drive (SX/DP/DPH) for prop, anode, and seal compatibility

V8 Gasoline EFI — 5.7L (Related platform, lower output)

Feature Description
Configuration EFI 4‑Stroke V8 sterndrive/inboard; earlier carb/EFI variants exist
Common Models 5.7Gi / 5.7GXi families with multiple suffix revisions
Advantages Broad parts availability; efficient cruise fuel economy on matched hulls
Notes Some ignition, cooling, and fuel components are platform‑specific—do not mix 5.7L and 8.1L parts without verifying fit

Routine Maintenance & Service Parts

Intervals below are general guidelines for gasoline 4‑Stroke V8 marine engines. Always follow the official Volvo Penta service schedule for your exact model and drive.

Item Interval* Remarks Parts Link
Engine oil & filter Every 100 hours or annually Use marine‑grade oil that meets OEM spec; warm engine before draining Volvo Penta Service & Maintenance Kits
Gear oil (sterndrive) Every 100 hours or annually Change sooner if water intrusion is suspected; reseal as needed Volvo Penta Collection
Spark plugs Inspect every 100 hours; replace 200–300 hours (usage dependent) Use correct heat range and gap for your model revision Spark plug
Fuel filter / water separator Every 100 hours or annually Drain bowl for water; replace element to prevent hesitation/power loss Volvo Penta Fuel filters
Raw‑water pump impeller / kit Every 200 hours or 1–2 seasons Replace sooner after any overheat or dry‑run event Volvo Penta Water Pump Repair Kits
Anodes (engine & drive) Inspect monthly; replace at ~50% wear Choose alloy for your water (zinc, aluminum, or magnesium) Volvo Penta Anodes
Bellows (sterndrive) Inspect annually; replace 2–3 years Cracked bellows can sink a boat; check for oil/fuel damage Bellow

*Intervals are typical for gasoline sterndrive V8s; environment and duty cycle may require shorter intervals.

Frequently Used Parts Categories

Common Symptoms & Quick Checks

Symptom Check First Related Parts
Weak water stream or overheat alarm Clogged intake screens, worn impeller, thermostat stuck, low anode condition Water pump repair kit/impeller, thermostat, anodes
Poor acceleration / power loss Fuel quality, water in separator, restricted fuel filter, fouled plugs, over‑pitched prop Fuel filter element, spark plugs, propeller
Hard starting / rough idle Battery state, starter draw, vacuum leaks, key sensors (ECT/MAP) connections Starter motor, gaskets/hoses, engine sensors
Gearcase noise or metal in gear oil Oil level/condition, water intrusion via seals, prop shaft runout Lower unit seal kit, shims/bearings, fresh gear lube

FAQs

Are parts interchangeable between different years or platform revisions?

Often no. Volvo Penta model suffixes (e.g., -B, -C, -D) reflect configuration updates. Cooling, ignition, sensors, and ECU calibrations may differ. Match parts to your complete model name and serial number, and confirm the drive model for gearcase items.

When should I replace the raw‑water impeller?

As a preventive service, replace every 200 hours or 1–2 seasons—sooner after any overheat, debris ingestion, or dry running. Always inspect the pump housing and replace the full kit if wear is evident.

How often should the sterndrive gear oil be changed?

Typically every 100 hours or annually. Change immediately if the oil looks milky, has metal fines, or after propeller‑wrenching events that may stress seals.

What information helps confirm part compatibility?

Provide the complete engine model and suffix, product/serial number, the sterndrive model (e.g., SX‑A, DP‑S, DPH), and details on your cooling configuration (raw vs. factory freshwater‑cooled). Photos of the ID tag and the old part help avoid guesswork.

Ready to find the right components for your Volvo Penta setup? Browse the main brand collection and use Filter & Sort to narrow by horsepower, year, and part type.

Shop Volvo Penta Parts

If you’re unsure about your model, send us a clear photo of the nameplate and the part you need—we’ll help verify compatibility.
View as
Back to top

Compare /5