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
TELCO-TATA 9TD01089/3, HANOMAG 2962609M1, VOLVO 14044063, BAUER 240074, TELCO-TATA 9TD01120/03, DRESSER 624848C1, LIEBHERR 4098.108.16, BERCO ID427, CASE R29245, DRESSER-FURUKAWA 1254518H1, CATERPILLAR 3Y1129, POCLAIN-CASE POCLAIN ZKI233006, LIEBHERR 786500614, HANOMAG 374937128, TELCO-TATA TD01120/03, CATERPILLAR 2M8758, TELCO-TATA TD01089/3, HANOMAG 3254010M1, VPI V1S1859, CATERPILLAR 1S1859, CNH-FIAT NEW HOLLAND 76040849, POCLAIN-CASE POCLAIN P0233006S, SENNEBOGEN 2511018586, LIEBHERR 4091000, BERCO CR1105, INGERSOLL RAND 57070971, SENNEBOGEN 018586, VOLVO 44063, LIEBHERR 4097514, HANOMAG 2962609M, O-&-K-TEREX 111742, Surub papuc, REEDRILL V007409, LIEBHERR 7001689, LIEBHERR 7003775, HYUNDAI 81E-0023, Excavator, KOMATSU 207-32-E1134E, POCLAIN-CASE POCLAIN S0233006, JOHN DEERE T51523, ATLAS-TEREX, 1902E, LANDINI MASSEY FERGUSON 2895889M1, DRESSER-FURUKAWA 3194590R2, BENATI 2004014, PRIESTMAN 234855, BERCO CR1105A, VARIOUS 571108, ITM D01070A0N15
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
REEDRILL V007409, CATERPILLAR 2M8758, CASE R29245, SENNEBOGEN 2511018586, TELCO-TATA 9TD01089/3, LIEBHERR 4098.108.16, LIEBHERR 4091000, BAUER 240074, BENATI 2004014, POCLAIN-CASE POCLAIN S0233006, JOHN DEERE T51523, DRESSER-FURUKAWA 3194590R2, VARIOUS 571108, POCLAIN-CASE POCLAIN ZKI233006, HYUNDAI 81E-0023, POCLAIN-CASE POCLAIN P0233006S, Surub papuc, BERCO CR1105A, LIEBHERR 4097514, HANOMAG 374937128, INGERSOLL RAND 57070971, HANOMAG 2962609M, LANDINI MASSEY FERGUSON 2895889M1, LIEBHERR 7003775, TELCO-TATA 9TD01120/03, CATERPILLAR 1S1859, VOLVO 14044063, PRIESTMAN 234855, 1902E, BERCO ID427, LIEBHERR 786500614, ATLAS-TEREX, DRESSER-FURUKAWA 1254518H1, ITM D01070A0N15, KOMATSU 207-32-E1134E, O-&-K-TEREX 111742, VOLVO 44063, LIEBHERR 7001689, TELCO-TATA TD01120/03, SENNEBOGEN 018586, VPI V1S1859, HANOMAG 3254010M1, TELCO-TATA TD01089/3, BERCO CR1105, DRESSER 624848C1, Excavator, CNH-FIAT NEW HOLLAND 76040849, CATERPILLAR 3Y1129, HANOMAG 2962609M1