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Freightliner truck repairs

Our services

Freightliner & International truck specialists

When it comes to Detroit DD13 and DD15 engine rebuilding, our team brings proven expertise refined right here in South Africa's demanding heavy-duty trucking environment. We've built a strong track record servicing large-scale fleets, including extensive rebuild work for Kelrn Logistics, one of the region's major fleet operators. Our technicians understand the unique stresses these engines face under South African road and load conditions, from long-haul routes to heavy freight demands. Whether it's a single truck or an entire fleet, we deliver DD13 and DD15 rebuilds that restore performance, durability, and confidence on every trip.

Freightliner & american brand truck expertise

Factory-level diagnostics for Detroit DD13/DD15 and Cummins ISX/X15 engines.Fast turnaround, minimal fleet downtime.Warrantied rebuilds for peace of mind.Keeping your trucks on road.Diesel Particulate Filter (DPF) cleaning or replacement.Experience with International, Kenworth, Western Star, Freightliner and Peterbilt trucks.

Customer satisfaction guaranteed

Freightliner/International repairs we handle

Freightliner trucks (Cascadia, M2, Columbia, Coronado, etc.) are workhorses, but certain systems tend to need attention more than others. Here's a rundown of the most common repairs our technicians handle:

Freightliner Engine

Detroit Diesel's DD13 and DD15 engines are the backbone of countless Freightliner and Western Star fleets, and when they need a rebuild, precision is everything. Our technicians specialize in complete DD13 and DD15 engine rebuilds, tearing down each unit to inspect, measure, and restore every component to factory specifications. Using genuine and OEM-quality parts, we address common wear points like piston rings, injectors, turbochargers, and cylinder liners to bring back the horsepower and torque these engines are built for. Whether you're facing a major failure or planning ahead for preventative overhaul, we deliver rebuilt DD13 and DD15 engines that perform reliably mile after mile.

We rebuild your entire engineWe replace all six cylindersTurbocharger repair or replacementWe fit new pistons and ringsWe fit new main bearingsWe reseal every critical gasketWe install six new injectors

Freightliner Gearbox

Freightliner and Western Star trucks run on a range of transmissions, from Eaton Fuller manuals to Detroit's own DT12 automated manual, and each one demands a different approach to get right. Our technicians specialize in complete gearbox rebuilds and repairs across Eaton Fuller, Detroit DT12, Allison, and Meritor transmissions, diagnosing everything from worn synchronizers to clutch and shift actuator failures. Using genuine and OEM-quality parts, we address common wear points like gears, bearings, seals, XY shifter linkages, and electronic shift controls to restore smooth, reliable power delivery. Whether you're running manual, automated manual, or full automatic transmissions, we deliver rebuilt gearboxes that shift right and hold up mile after mile.

We rebuild your entire gearboxWe service Eaton Fuller transmissionsWe repair Detroit DT12 unitsWe fit new gears and bearingsWe replace worn synchronizersWe reseal every critical gasketWe repair XY shifter assemblies

Electrical

Battery and alternator issuesWiring harness chafing/corrosion (common on older units)ECM/ECU fault codes and sensor troubleshootingHeadlight/marker light assemblies (Cascadias in particular have known housing issues)

Brakes

Air brake chamber and valve replacementBrake pad/shoe and drum/rotor wearABS sensor faults

Suspension & Steering

Air ride suspension bag/leak repairsShock absorber replacementSteering linkage and tie rod wearKing pin and bushing wear

Drivetrain

Clutch replacement (manual transmissions)Transmission issues (especially older Eaton/Fuller units, or DT12 automated manuals)U-joint and driveshaft repairsDifferential leaks/wear

HVAC

Cab heater core or blend door failuresA/C compressor and condenser issues (common in Cascadias)

Cab & Body

Door hinge and latch wearWindshield wiper motor issuesDash cluster/gauge failures

Fleets we service

Freightliner Columbia & Coronado

Long-haul conventional cabs, kept on the road with dealer-level diagnostics and genuine repairs.

Freightliner conventional cab hauling a flatbed trailer

Cascadia & M2 fleets

From DPF regens to DEF dosing faults, we keep modern Freightliner fleets compliant and moving.

International trucks

Our experience extends beyond Freightliner to other international heavy truck brands.

Logistics & freight fleets

Servicing the trucks that keep freight and logistics operators moving across the Northern Cape.

Kenworth & other brands

Multi-brand expertise means one call covers your whole mixed fleet, not just your Freightliners.

Why Freightliner owners choose Impact

Specialists in Cummins and Detroit Diesel enginesJaltest and Launch dealer-level diagnostic equipmentExperienced with Cascadia, M2, Columbia and Coronado modelsComfortable working across International, Kenworth, UD, MAN and Volvo trucks100% mobile — we come to your breakdownBacked by our 6-month / 10,000km workmanship warranty

Benefits of using us

We're good at finding problemsWe use modern diagnostic machinesOur team is up to date with the latest repair trendsWe back up our workmanship with a warrantyWe can work on various vehicle types, from cars to trucksWe use quality parts when replacing parts on a vehicleWe're reliable

Our pricing

Normal business hours:
8am - 5pm (mon - fri), 8am - 1pm (sat/public holidays)

Item	Cost
Labour rate per hour	R600.00
Travel costs per/km	R10.00

After hours: 5pm - 8am

Item	Cost
Labour rate per hour	R850.00
Travel costs per/km	R10.00

Read our Google Reviews.

Hear what our clients have to say

Clive Maistry

"My experience with Impact Mobile was terrific from the initial call! I had an issue with my Engine Light. They called, made an appointment for a time convenient for me, and drove through to my offices to assist. Well impressed for a mobile auto service! I must say 5 stars and thumbs up to the team!! #Recommended"

Vumile Sivile

"Good evening Froncois and your colleague. Thank you for your great service in such a short time, I have requested your help this morning and indeed you did not disappoint, keep up the good work, I like the fact that you give a detailed report of your work. Thank you kindly."

Lyle Dolan Idas

"Impact mobile auto electricians knowledgeable, dependable, They swiftly and accurately identified the issue with my vehicle and executed the necessary repairs with impressive efficiency and skill. The quality of their work was evident, resolving the problem effectively and getting me back on the road safely. Their commitment to high standards, even under pressure, was truly commendable.

Ready to get your Freightliner back on the road?

We come to you to fix it on-site, whether you're at the mall, office, or roadside.