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Describe the job once and we'll match it with up to 3 diesel mechanics in Semaphore.

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Diesel Mechanics in Semaphore SA

5 diesel mechanics

About these results

Based here first, then diesel mechanics by rating, then related trades.

A business is Featured only when it holds our Featured plan; Featured is a listing plan, not a rating.

5 diesel mechanics based in or serving Semaphore; listings updated 7 Oct 2026.

  1. Based nearby, serving Semaphore

    These businesses aren't based in Semaphore but list it as a service area.

  2. Webb Marine Services

    Diesel Mechanics, Mechanics

    Based in Largs North SA · serves Semaphore

    Directions View profile Serves this area

    Diesel engine supplier and boat repair workshop in Largs North, SA, also selling industrial equipment and maintaining small engines.

    • Diesel servicing and repairs

    Based in Largs North SAServes Semaphore

    Closed · opens tomorrow 8:00 am

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  3. Cliffs Auto Repairs

    Mechanics, Auto Electricians, 4x4, Tyres, Diesel Mechanics

    Based in Alberton SA · serves Semaphore

    Directions View profile Serves this area

    Auto repair garage in Alberton, SA handling mechanical and electrical work, air conditioning, brakes, tyres and LPG conversions.

    • Brake and clutch repairs
    • 4x4 suspension
    • Car air conditioning

    Based in Alberton SAServes Semaphore

    Closed · opens tomorrow 8:00 am

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  4. Kym's Auto Repairs

    Mechanics, Auto Electricians, Diesel Mechanics

    Based in Birkenhead SA · serves Semaphore

    Directions View profile Serves this area

    Mechanic in Birkenhead, SA for vehicle servicing, electrical diagnostics, diesel engine work and air conditioning systems.

    Based in Birkenhead SAServes Semaphore

    Closed · opens tomorrow 8:00 am

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  5. LeFevre Auto Repairs

    Mechanics, Auto Electricians, Tyres, Diesel Mechanics

    Based in Osborne SA · serves Semaphore

    Directions View profile Serves this area

    Auto repair workshop in Osborne, SA for servicing, oil changes, transmission repairs and wheel alignment.

    • Oil change
    • Transmission and gearbox repairs
    • Wheel alignment and balancing

    Based in Osborne SAServes Semaphore

    Closed · opens tomorrow 7:30 am

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  6. Pro 4x4

    Mechanics, Tyres, Diesel Mechanics

    Based in Queenstown SA · serves Semaphore

    Directions View profile Serves this area

    Four-wheel-drive repairer in Queenstown, SA, handling oil changes, diesel servicing, exhaust repairs and tyres, wheels and rims.

    • Oil change
    • Exhaust, cooling and engine repairs
    • Diesel servicing and repairs

    Based in Queenstown SAServes Semaphore

    Closed · opens tomorrow 8:00 am

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No diesel mechanics on this page match all of these filters. Untick one, or clear the filters to see all 5 on this page.

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Tell us about the job and we'll match it with up to 3 diesel mechanics in Semaphore. Your contact details go only to businesses on a paid plan here, and after you send we tell you which businesses got them. Free, no obligation.

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Choosing diesel mechanics in Semaphore

Diesel mechanics for diesel servicing and repairs, injectors and fuel systems, DPF cleaning and truck repairs. Mechanics Directory lists 5 diesel mechanics in Semaphore SA. Listings show the services each business offers, and a rating where there is one.

What to check before you book

Getting started

  1. Describe the job. Your vehicle's make, model and year, what's wrong or what it needs, and when you need it done.
  2. Shortlist two or three. Use the filters above to narrow this page by website.
  3. Compare quotes. Or send one request and we'll match it with up to 3 diesel mechanics.
  4. Agree in writing. Confirm the price, what's included and when the vehicle will be ready before work begins.

Frequently asked questions

How do I choose between diesel mechanics in Semaphore?

Compare two or three. Ask whether they work on your make, and on light vehicles, trucks or machinery, whether they can come to you, and for a written quote for parts and labour. A business that is owner verified on Mechanics Directory has confirmed it runs the listing.

How much does a diesel service cost in Semaphore?

It depends on the vehicle or machine, the oil and filters it takes, and whether the injectors, turbo or DPF need work. Asking two or three local diesel mechanics for a written quote is the quickest way to see the going rate in Semaphore.

Do diesel mechanics need to be licensed?

Licensing depends on the work and the state. Modifications such as GVM upgrades need certifying under your state's rules, and outside Western Australia and the Northern Territory, modifications to heavy vehicles over 4.5 tonnes are regulated by the National Heavy Vehicle Regulator. In South Australia, ask the business which qualifications and licences apply to your job. Listings marked "Credentials listed" show a licence, accreditation or membership on the business's profile. We don't check it, so confirm it with whoever issued it.

What is DPF cleaning?

A diesel particulate filter (DPF) traps soot from the exhaust and burns it off on longer runs at highway speed. Lots of short trips can stop that happening, so the filter blocks and a warning light comes on. A diesel mechanic can check the filter and clean it or run a forced regeneration.

What does "serves this area" mean?

Some businesses are based in a nearby suburb but cover this area, including mobile mechanics and towing services that come to you. On suburb pages we list businesses based in the suburb first, then the ones that say they serve it.

How do free quotes work?

Tell us about the job once. We match your request with up to 3 diesel mechanics near you. A business on a paid plan here gets it with your name and contact details and can contact you directly. A business on the free plan sees the job and your suburb but not your details, so it can't contact you unless it upgrades. A business that hasn't claimed its listing sees your request only once it claims. After you send, we tell you which applies to each business. It's free and there's no obligation.