Genuine MAN marine parts

As an authorized MAN Engines dealer, we supply genuine MAN parts built to the exact tolerances of your engine, sourced through MAN’s authorized network and supported by our experienced parts advisors. Right here on the San Rafael Canal.

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Factory-spec components for commercial and recreational diesel engines, available for pickup or shipped nationwide.

A part that matches the engine, not just the gap it fills

Marine diesels run hard in an unforgiving environment. The difference between a genuine MAN component and a near-equivalent shows up in heat, salt, and hours — which is exactly where it costs you the most.

Warranty integrity

Factory parts keep your engine’s coverage intact and your service history clean — no questions about what went in.

Common-rail precision

Injectors, pumps, and sensors built to MAN’s tolerances protect fuel-system performance and emissions compliance.

Built for salt water

Cooling, raw-water, and seal components rated for the marine duty cycle — not a generic substitute that fails early.

Real availability

We source through MAN’s network and draw on one of the region’s largest marine parts inventories to keep you moving.

Parts for scheduled service, wear items, and the unexpected

If it carries a MAN part number, we can source it. The categories below cover the items that come up most across routine maintenance and repair.

Filtration & Fluids

  • Fuel, oil, and air filters
  • Water-separator elements

  • Approved oils and coolants

  • Service interval kits

Cooling & raw water

  • Raw-water pump impellers and pumps
  • Heat exchanger and aftercooler cores
  • Thermostats and seawater strainers
  • Coolant hoses and clamps

Fuel & injection

  • Injectors and injector seals
  • High-pressure fuel pumps
  • Fuel lines and fittings
  • Common-rail components

Belts & drive

  • Serpentine and V-belts
  • Tensioners and idler pulleys
  • Damper and coupling components
  • Alternator and pump drive parts

Electrical & sensors

  • Alternators and starters
  • Temperature, pressure, and speed sensors
  • Engine harnesses and connectors
  • Control units and displays

Gaskets & seals

  • Head and manifold gaskets
  • Crankshaft and camshaft seals
  • Oil pan and valve cover gaskets
  • O-rings and sealing kits

From workboats to motoryachts

We supply parts across MAN’s marine diesel range — common-rail engines built for both heavy commercial duty and high-output recreational use. Have your engine’s model and serial number ready and we’ll match parts to your exact configuration.

Not sure which family you’re running? Send us a photo of the engine nameplate and we’ll identify it for you.

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MAN i6

730–850 hp · 12.4 L in-line six

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MAN v8

1,000–1,300 hp · 16.2 L V8

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MAN v12

1,400–2,000 hp · 24.2 L V12

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MAN v12X

2,000–2,200 hp · 29.6 L V12

Tell us the engine, We’ll handle the rest

Online MAN parts ordering is coming as we complete dealer onboarding. For now, the fastest path is a direct request to our parts desk — you’ll talk to someone who knows these engines.

1. Send your details

Share your engine model, serial number, and the part you are looking for. A nameplate photo is plenty to start.

2. We confirm & quote

We verify the correct MAN part for your configuration, confirm availability, and send pricing and lead time back to you.

3. Pick up or ship

Collect at our San Rafael counter or have it shipped to your dock. Installation through our service shop is available.

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Get the right part the first time

Our parts team works alongside the technicians who service these engines every day. Reach out and we’ll get you sorted.

  • nate@helmutsmarine.com
  • 619 Canal St, San Rafael, CA 94901
  • Monday – Friday | 8am – 5pm
    Saturday | 9am – 1pm Parts Dept. only and prescheduled boat pick up/drop offs.

Send us a message

Unparalleled Expertise