
to Work
Your local
Diesel Specialist
HTSL Diesel Mechanical has been looking after heavy vehicles across the Waikato since 2003. Based in Te Awamutu, we offer honest advice, expert servicing, and professional diesel maintenance and repairs to keep trucks moving.
From scheduled truck maintenance to breakdown support, we do the job properly, first time. Straight-talking, hardworking, and locally owned, HTSL is here to keep you safe, compliant, and ready for the road.
MORE THAN JUST YOUR
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 looking after heavy vehicles across the Waikato since 2003. Based in Te Awamutu, we offer honest advice, expert servicing, and professional diesel maintenance and repairs to keep trucks moving.
From scheduled truck maintenance to breakdown support, we do the job properly, first time. Straight-talking, hardworking, and locally owned, HTSL is here to keep you safe, compliant, and ready for the road.

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.

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.

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.

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

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.

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


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
See what our
customers are saying
Book Your Job Now
Or Request Expert
Advice
Our team will reach out to you soon.