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

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Diesel Mechanics in Wallacia NSW

15 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.

15 diesel mechanics based in or serving Wallacia; listings updated 7 Oct 2026.

  1. Based nearby, serving Wallacia

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

  3. OutWest Trucks and Machinery

    Diesel Mechanics

    Based in Emu Plains NSW · serves Wallacia

    Directions View profile Serves this area

    Diesel and hydraulic specialists in Emu Plains, NSW, repairing diesel engines and servicing hydraulics on trucks and heavy machinery.

    • Truck maintenance
    • Machinery servicing
    • Routine maintenance

    Based in Emu Plains NSWServes Wallacia

    Closed · opens 7:00 am

    Get a quote

  4. St Quintin Truck Repairs

    Mechanics, Diesel Mechanics

    Based in Saint Marys NSW · serves Wallacia

    Directions View profile Serves this area

    Truck repair and diesel engine specialists in Saint Marys, NSW, servicing heavy vehicles across Sydney's west.

    • Truck and bus repairs

    Based in Saint Marys NSWServes Wallacia

    Closed · opens 7:00 am

    Get a quote

  6. Truck Mechanic

    Mechanics, Diesel Mechanics, 4x4, Tyres, Caravan Repairs

    Based in Rossmore NSW · serves Wallacia

    View profile Serves this area Est. 2013

    Truck mechanic in Rossmore, NSW for heavy truck servicing and repairs, diesel engine work, diagnostics and mobile breakdown help.

    • Truck Services
    • Diesel Engine Services
    • On-The-Spot Diagnostics

    Based in Rossmore NSWServes Wallacia

    Open now · 24 hours

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  7. Access Tec Pty Ltd

    Mechanics, Diesel Mechanics

    Based in Emu Plains NSW · serves Wallacia

    Directions View profile Serves this area

    Mobile plant mechanic in Emu Plains, NSW for on-site welding, dynamic balancing and track pin press work on heavy machinery.

    • Mobile Plant Mechanic's
    • On-Site Welding
    • On-Site Dynamic Balancing

    Based in Emu Plains NSWServes Wallacia

    Open now · 24 hours

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  8. Emu Car Care

    Mechanics, Auto Electricians, Tyres, Diesel Mechanics

    Based in Emu Heights NSW · serves Wallacia

    Directions View profile Serves this area

    Mechanical and auto electrical workshop in Emu Heights, NSW, handling oil changes, diesel engine repairs and tyre replacements.

    • Oil change

    Based in Emu Heights NSWServes Wallacia

    Closed · opens 7:30 am

    Get a quote

  9. Pedders Suspension & Brakes Penrith

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

    Based in Penrith NSW · serves Wallacia

    Directions View profile Credentials listed Serves this area Est. 1950

    Suspension and brake shop in Penrith, NSW for suspension repairs, brake repairs, wheel alignments and towbar fitting.

    • Brake Repairs
    • Suspension Repairs
    • Wheel Alignment

    Based in Penrith NSWServes Wallacia

    Closed · opens 7:30 am

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  10. Penrith Engine Services

    Mechanics, Diesel Mechanics

    Based in Penrith NSW · serves Wallacia

    Directions View profile Serves this area

    Diesel mechanic in Penrith, NSW for diesel engine repairs and maintenance, plus oil changes.

    • Oil change

    Based in Penrith NSWServes Wallacia

    Closed · opens 8:30 am

    Get a quote

  11. Perkins Automotive

    Mechanics, Auto Electricians, Tyres, Diesel Mechanics

    Based in Emu Plains NSW · serves Wallacia

    Directions View profile Serves this area

    Mechanical workshop in Emu Plains, NSW, handling diesel engine work, car air conditioning and tyres.

    • Car air conditioning

    Based in Emu Plains NSWServes Wallacia

    Closed · opens 8:00 am

    Get a quote

  12. Qwikfit-Tyres and Mechanics

    Mechanics, Tyres, Diesel Mechanics, Caravan Repairs

    Based in Horsley Park NSW · serves Wallacia

    Directions View profile Serves this area

    Automotive workshop in Horsley Park, NSW for oil changes, tyre fitting, batteries and truck repairs.

    • Oil change
    • Car batteries
    • Truck and bus repairs

    Based in Horsley Park NSWServes Wallacia

    Closed · opens 7:00 am

    Get a quote

  14. Transformance Mechanical Engineering

    Mechanics, Auto Electricians, 4x4, Diesel Mechanics

    Based in Emu Plains NSW · serves Wallacia

    Directions View profile Serves this area Est. 2014

    Mechanical engineering workshop in Emu Plains, NSW for logbook servicing, performance tuning, suspension setups and inspections.

    • Log Book Servicing
    • Performance Oriented Wheel Alignments
    • Petrol Vehicle ECU Tuning Services

    Based in Emu Plains NSWServes Wallacia

    Closed · opens 8:30 am

    Get a quote

No diesel mechanics on this page match all of these filters. Untick one, or clear the filters to see all 15 on this page.

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Tell us about the job and we'll match it with up to 3 diesel mechanics in Wallacia. 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 Wallacia

Diesel mechanics for diesel servicing and repairs, injectors and fuel systems, DPF cleaning and truck repairs. Mechanics Directory lists 15 diesel mechanics in Wallacia NSW. 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 listed credentials and 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 Wallacia?

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 Wallacia?

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 Wallacia.

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 New South Wales, a business that repairs vehicles needs a motor vehicle repairer licence from NSW Fair Trading, and the people doing the work generally need a tradesperson certificate (some minor work is exempt). You can check a licence on the NSW Government's online licence check. In New South Wales, autogas (LPG) work is regulated under the Gas and Electricity (Consumer Safety) Regulation 2018; ask for the autogas licence. 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.