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
DRESSER 1254380H1, LIEBHERR 4982171, VARIOUS 571008, LIEBHERR 4097515, A.B.G. 21076286, INGERSOLL RAND 56965262, VERMEER 118120001, MAIT 2901221, Buldozer, LIEBHERR 4253410, LIEBHERR 7001485, C.M.W-(CHARLES-MACHINES) 107-365, HANOMAG 2979124M, LANDINI MASSEY FERGUSON 3089873M1, JCB JNA0295, LANDINI MASSEY FERGUSON 2979124M1, DRESSER-FURUKAWA 319325231R1, 76W-2476-UP, LANDINI MASSEY FERGUSON 2928705M1, LANDINI MASSEY FERGUSON 2979939M1, MAIT 2175046, VOLVO 14016545, VOLVO 18065840, CATERPILLAR 7H3597, CATERPILLAR 5H8756, CNH-FIAT NEW HOLLAND 79031606, ITM D04100A0N15, TELCO-TATA 9TD01119/03, SENNEBOGEN 013343, LANDINI MASSEY FERGUSON 1430746M1, INGERSOLL RAND 57700866, TELCO-TATA 9TD01583/2, VOLVO 16545, REEDRILL V005766, LANDINI MASSEY FERGUSON 2979121M1, CATERPILLAR 5W9827, LIEBHERR 4157879, JOHN DEERE T45096, SIMIT 45482377, LIEBHERR 4091100, VPI V7H3597, TELCO-TATA TD01119/03, JOHN DEERE CQ09337, D4E, LANDINI MASSEY FERGUSON 4906550M1, JOHN DEERE T121478, JOHN DEERE T43323, BERCO CR1251, E.W.K. 501518501, GAMBETTI-BARRE M175903001, Surub papuc, TELCO-TATA TD01583/2, CNH-FIAT NEW HOLLAND 79004489, DRESSER-FURUKAWA 3193523R1, JCB JNA0362, HYUNDAI 81EL-25020, POCLAIN-CASE POCLAIN W0033071, JOHN DEERE-CAMECO CB01419009, CNH-FIAT NEW HOLLAND 4982171, CATERPILLAR, BENATI 2001074, EXTEC VCR1251, INGERSOLL RAND 57407405, CASE 295318A1, BERCO CR1251A
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
VPI V7H3597, Surub papuc, ITM D04100A0N15, JOHN DEERE CQ09337, JCB JNA0295, LANDINI MASSEY FERGUSON 3089873M1, JOHN DEERE T45096, LANDINI MASSEY FERGUSON 2979124M1, SENNEBOGEN 013343, CATERPILLAR 5W9827, INGERSOLL RAND 57407405, VOLVO 16545, POCLAIN-CASE POCLAIN W0033071, LIEBHERR 4091100, LIEBHERR 4253410, CNH-FIAT NEW HOLLAND 4982171, TELCO-TATA TD01583/2, LIEBHERR 7001485, HYUNDAI 81EL-25020, 76W-2476-UP, CNH-FIAT NEW HOLLAND 79004489, C.M.W-(CHARLES-MACHINES) 107-365, VOLVO 18065840, SIMIT 45482377, LANDINI MASSEY FERGUSON 2928705M1, LIEBHERR 4157879, INGERSOLL RAND 57700866, Buldozer, LANDINI MASSEY FERGUSON 2979939M1, LANDINI MASSEY FERGUSON 1430746M1, LANDINI MASSEY FERGUSON 2979121M1, MAIT 2901221, DRESSER-FURUKAWA 3193523R1, HANOMAG 2979124M, BENATI 2001074, CNH-FIAT NEW HOLLAND 79031606, TELCO-TATA 9TD01583/2, EXTEC VCR1251, LANDINI MASSEY FERGUSON 4906550M1, TELCO-TATA TD01119/03, CASE 295318A1, MAIT 2175046, JOHN DEERE T121478, BERCO CR1251A, JOHN DEERE T43323, LIEBHERR 4982171, A.B.G. 21076286, CATERPILLAR 7H3597, DRESSER-FURUKAWA 319325231R1, E.W.K. 501518501, GAMBETTI-BARRE M175903001, VARIOUS 571008, JCB JNA0362, D4E, REEDRILL V005766, LIEBHERR 4097515, DRESSER 1254380H1, INGERSOLL RAND 56965262, VOLVO 14016545, TELCO-TATA 9TD01119/03, BERCO CR1251, JOHN DEERE-CAMECO CB01419009, CATERPILLAR, CATERPILLAR 5H8756, VERMEER 118120001