
to Work
Your local
Diesel SpecialistS
HTSL Diesel Mechanical has been proudly servicing heavy vehicles throughout the Waikato since 2003. Located in Te Awamutu, we provide honest advice, expert servicing, and reliable diesel maintenance and repairs to keep your trucks on the move.
From routine maintenance to urgent breakdown support, we get the job done right—first time, every time. Locally owned, straight-talking, and hardworking, HTSL is committed to keeping you safe, compliant, and road-ready.
MORE THAN JUST
LOCAL TRUCK MECHANICS
SERVICES
Reliable mechanical support for trucks and trailers. Whether it’s fault finding, brake work, or sorting the jobs others won’t touch, our team knows how to get it done.
PARTS
We stock a wide range of parts for heavy vehicles, including genuine Cummins components and quality aftermarket options. Fast turnaround, trusted brands.
OFFERS
Keep an eye out for specials on authorised parts, unbeatable service deals, and special package offers.
TE AWAMUTU DIESEL MECHANIC SPECIALISTS
HTSL Diesel Mechanical has been proudly servicing heavy vehicles throughout the Waikato since 2003. Located in Te Awamutu, we provide honest advice, expert servicing, and reliable diesel maintenance and repairs to keep your trucks on the move.
From routine maintenance to urgent breakdown support, we get the job done right—first time, every time. Locally owned, straight-talking, and hardworking, HTSL is committed to keeping you safe, compliant, and road-ready.

OUR DIESEL
SERVICES INCLUDE

Servicing
We offer three levels of mechanical servicing - Service A, B, and C - so you can choose the best fit for your vehicle and maintenance schedule.

Truck Parts
We carry quality parts for all makes and models. If it’s on a truck or trailer, we’ll either have it or can source it for a quick and easy delivery.

Brake Systems
We check the braking system for wear, imbalance, or faults, making sure your vehicle can stop safely under all conditions.

Diesel Motors Rebuild
Your engine is the heart of your truck. If it needs rebuilding or replacing, we’ll get it sorted with the care and technical precision it deserves.

Mechanical & Electrical Repairs
Our team handles all mechanical and electrical repairs, from minor wiring issues to major component faults. We diagnose fast and fix properly.

Filtration
As Fleet guard stockists, we supply a large range of filters to suit most engines. Whether it’s oil, air or fuel, clean filtration keeps your systems running cleanly and efficiently.

Steering & Suspension
From play in the steering to worn-out shocks, we inspect everything that affects handling, ride stability, and control.

Drive Train
We can rebuild, replace, and recondition automatic and manual gearboxes. Whether it’s major work or minor fixes, we’ll get you back on the road.

Truck & Trailer Maintenance Repairs
Whether it’s tyres, suspension, load anchors or lights, we handle the day-to-day wear and tear that comes with running trucks and trailers.

Genuine Cummins Parts
As an authorised Cummins agent, we stock a wide range of genuine parts, including turbos, gaskets, water pumps, sensors, and AdBlue system components.

Load Anchorage Systems
We ensure your tie-downs, lashing points, and anchorages are secure and compliant, so your load stays where it should.

Diagnostic Fault Finding
Using advanced diagnostic tools, we accurately pinpoint faults, then carry out the necessary repairs to clear codes and restore performance.

Trailer ABS Diagnostics & Repairs
ABS faults can impact braking and compliance. We use specialist gear to diagnose and repair trailer ABS issues to get you road-ready.

Trailer parts
From airbags and brake parts to bushes and couplings, we supply durable, road-ready trailer parts for regular maintenance, upgrades, and repairs.

Tyres & Wheels
We check tread depth, pressure, and overall tyre condition, as well as wheel integrity and correct fitment.

PVA & COF
Our service pit is fully equipped for pre-vehicle inspections and CoF checks. Whether you're preparing for certification or need repairs post-inspection, we’ve got it covered.

Major Component Overhaul
We rebuild engines, gearboxes and diffs in-house, saving time and ensuring every component is overhauled to spec by trusted hands.

Lights, Mirrors & Glazing
We inspect all lighting, reflectors, mirrors, and glass for visibility, alignment, damage, and compliance with relevant laws and regulations.

Electrical Repairs
Lights not working? Faulty wiring? Our team can diagnose and repair most electrical issues, from minor fixes to full rewiring.

Vehicle Accessories and cleaning
We stock trusted brands of truck wash, degreasers, interior cleaners and more. Ask us about the best products to keep your cab clean and your rig looking sharp.

Seat Belts & Safety Features
We verify that all seat belts and related safety features are present, working, and meet required safety standards.

Brake Servicing & Repairs
We inspect, repair and replace brakes to keep your stopping power sharp. From pads to drums, we’ll make sure you’re safe to drive.

Preventive Maintenance Repairs
We’ll help you catch small problems before they become big ones. Our preventive maintenance repairs are all about uptime and safety.


YOUR LOCAL
COF PROVIDER
Get your Certificate of Fitness sorted by RTC, our partner of choice. Based out of our HTSL Diesel Mechanical workshops, RTC carries out inspections to make sure your vehicle meets road safety standards. For peace of mind ahead of time, they also offer pre-vehicle inspections (PVA), giving you the chance to sort out repairs before your COF test. And best of all, if anything needs fixing, the HTSL team can usually take care of it for you.
WHY CHOOSE
HTSL?
Approved Cummins Service and Repair Agent
Local, family-owned business
Extensive parts available in stock
Independent COF
provider
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