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
INGERSOLL RAND 57070971, LIEBHERR 786500614, BENATI 2004014, TELCO-TATA 9TD01089/3, TELCO-TATA TD01089/3, HANOMAG 374937128, O-&-K-TEREX 111742, LANDINI MASSEY FERGUSON 2895889M1, VOLVO 44063, BAUER 240074, CATERPILLAR 3Y1129, LIEBHERR 4091000, LIEBHERR 4098.108.16, PRIESTMAN 234855, TELCO-TATA TD01120/03, LIEBHERR 7001689, CATERPILLAR 1S1859, VPI V1S1859, DRESSER-FURUKAWA 1254518H1, LIEBHERR 4097514, D7C, HANOMAG 2962609M1, CATERPILLAR 2M8758, SENNEBOGEN 2511018586, JOHN DEERE T51523, VARIOUS 571108, POCLAIN-CASE POCLAIN S0233006, CNH-FIAT NEW HOLLAND 76040849, SENNEBOGEN 018586, ITM D01070A0N15, BERCO CR1105, HANOMAG 3254010M1, POCLAIN-CASE POCLAIN ZKI233006, LIEBHERR 7003775, KOMATSU 207-32-E1134E, CATERPILLAR, HYUNDAI 81E-0023, VOLVO 14044063, TELCO-TATA 9TD01120/03, POCLAIN-CASE POCLAIN P0233006S, CASE R29245, Buldozer, BERCO CR1105A, DRESSER-FURUKAWA 3194590R2, BERCO ID427, REEDRILL V007409, Surub papuc, DRESSER 624848C1, HANOMAG 2962609M
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
HANOMAG 2962609M, CASE R29245, KOMATSU 207-32-E1134E, O-&-K-TEREX 111742, LIEBHERR 4098.108.16, TELCO-TATA TD01089/3, JOHN DEERE T51523, Buldozer, POCLAIN-CASE POCLAIN ZKI233006, CATERPILLAR, BERCO ID427, LIEBHERR 4097514, TELCO-TATA 9TD01089/3, BENATI 2004014, VPI V1S1859, SENNEBOGEN 018586, REEDRILL V007409, CATERPILLAR 2M8758, LIEBHERR 7003775, TELCO-TATA TD01120/03, VARIOUS 571108, D7C, HANOMAG 2962609M1, INGERSOLL RAND 57070971, HANOMAG 3254010M1, DRESSER-FURUKAWA 3194590R2, VOLVO 14044063, LIEBHERR 7001689, LIEBHERR 4091000, PRIESTMAN 234855, BERCO CR1105, POCLAIN-CASE POCLAIN P0233006S, CATERPILLAR 3Y1129, HANOMAG 374937128, SENNEBOGEN 2511018586, LANDINI MASSEY FERGUSON 2895889M1, BAUER 240074, CATERPILLAR 1S1859, Surub papuc, POCLAIN-CASE POCLAIN S0233006, VOLVO 44063, DRESSER-FURUKAWA 1254518H1, HYUNDAI 81E-0023, TELCO-TATA 9TD01120/03, ITM D01070A0N15, DRESSER 624848C1, CNH-FIAT NEW HOLLAND 76040849, BERCO CR1105A, LIEBHERR 786500614