Utilajul de constructii a fost testat pe santiere aflate la o altitudine mare si in lucrari realizate la temperaturi scazute. Astfel, cumparatorii buldozerului Komatsu D65-17 sunt convinsi ca utilajul va respecta norma Tier 4 in orice imprejurare. Puterea motorului acestui buldozer Komatsu variaza intre 208 si 222
GCK, LIEBHERR 7001688, TELCO-TATA TD01120/04, KOMATSU 01803-E0202E, POCLAIN-CASE POCLAIN, TESMEC T00-2600-126, VPI V1S1860, POCLAIN-CASE POCLAIN V2334504, SENNEBOGEN 018585, BERCO CR1967, VOLVO 140440645, Excavator, INGERSOLL RAND 56969264, VOLVO 44064, VARIOUS 571109, CATERPILLAR 1S1860, REEDRILL V007410, ITM D0108000N17, CATERPILLAR 1A4019, DRESSER 616226C1, POCLAIN-CASE POCLAIN ZKI234504, HYUNDAI 81E7-0022, LIEBHERR 7003772, SENNEBOGEN 2528018585, TELCO-TATA TD01089/4, O-&-K-TEREX 42452, POCLAIN-CASE POCLAIN E0050018, CASE R29246, BAUER 49335, CNH-FIAT NEW HOLLAND 76040850, DRESSER-FURUKAWA 3194591R1, LIEBHERR 4111000, POCLAIN-CASE POCLAIN V0234504, BLOUNT 31001809, LARSEN & TOUBRO W20134542, HANOMAG 3254012M1, LIEBHERR 4130.246.16, Piulita, CNH-FIAT NEW HOLLAND 87582723, HANOMAG 2895890M1, TELCO-TATA 9TD01089/4, VOLVO 14044064
In timp ce modelele standard ale Seriei 3 beneficiază de o transmisie hidrostatică cu două viteze, care permite utilajelor să se deplaseze cu viteze cuprinse între 0-20 km/h, noul 121E HTS, împreună cu alte două modele mai mari, utilizează o unitate hidrostatică cu două trepte în combinaţie
SENNEBOGEN 2528018585, BAUER 49335, VOLVO 140440645, INGERSOLL RAND 56969264, KOMATSU 01803-E0202E, DRESSER-FURUKAWA 3194591R1, VPI V1S1860, TELCO-TATA TD01120/04, VARIOUS 571109, CNH-FIAT NEW HOLLAND 87582723, BERCO CR1967, POCLAIN-CASE POCLAIN ZKI234504, VOLVO 44064, GCK, CATERPILLAR 1S1860, ITM D0108000N17, TESMEC T00-2600-126, LIEBHERR 7001688, CATERPILLAR 1A4019, TELCO-TATA TD01089/4, REEDRILL V007410, BLOUNT 31001809, POCLAIN-CASE POCLAIN, O-&-K-TEREX 42452, SENNEBOGEN 018585, VOLVO 14044064, POCLAIN-CASE POCLAIN V0234504, POCLAIN-CASE POCLAIN E0050018, POCLAIN-CASE POCLAIN V2334504, LIEBHERR 4111000, TELCO-TATA 9TD01089/4, LIEBHERR 4130.246.16, Excavator, LIEBHERR 7003772, Piulita, CNH-FIAT NEW HOLLAND 76040850, HANOMAG 2895890M1, DRESSER 616226C1, HYUNDAI 81E7-0022, LARSEN & TOUBRO W20134542, CASE R29246, HANOMAG 3254012M1