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
C.M.W-(CHARLES-MACHINES) 107-364, LIEBHERR 4111100, MAIT 2904108, SAMSUNG-H.I. 9112-01201, CNH-FIAT NEW HOLLAND 79009851, KOMATSU 00131437, DRESSER 616209C1, BENATI 2001015, EXTEC VCR1250, TELCO-TATA TD01119/04, VPI V1M1408, KOMATSU 131437, LANDINI MASSEY FERGUSON 2961659M1, POCLAIN-CASE POCLAIN ZKI134536, LIEBHERR 4253411, Buldozer, POCLAIN-CASE POCLAIN PK134536, CNH-FIAT NEW HOLLAND 71401387, WIRTGEN 43499, VOLVO 044062, HYUNDAI 81E6-37030, POCLAIN-CASE POCLAIN K0134536, ATLAS-TEREX 0362007, LIEBHERR 7402313, DRESSER 311347R2, POCLAIN-CASE POCLAIN P2434592V, DAEWOO 2121-6014, TELCO-TATA 9TD01119/04, LANDINI MASSEY FERGUSON 2928706M1, CNH-FIAT NEW HOLLAND, A.B.G. 21076294, DRESSER 260714R1, LANDINI MASSEY FERGUSON 392826X1, HYUNDAI 81EL-25030, EURODAEWOO 9121-6005D11, SENNEBOGEN 3528013331, CATERPILLAR 1M1408, CASE R25688, CNH-FIAT NEW HOLLAND 579383, HANOMAG 2979125M, DAEWOO K1043367, REEDRILL V005767, JOHN DEERE CQ09338, LIEBHERR 4174947, LANDINI MASSEY FERGUSON 2979125M1, BERCO CR1250, VOLVO 14526392, BENATI 2001075, INGERSOLL RAND 57700858, DAEWOO 9121-6005, LIEBHERR 4122664, SIMIT 45482379, DAEWOO 9121-7004, VOLVO 020005225990, 7C-2, LIEBHERR 4129303, TELCO-TATA TD01583/3, TELCO-TATA 9TD01583/3, LANDINI MASSEY FERGUSON N1926, VOLVO SA9112-12001, JOHN DEERE T45097, BERCO CR1250B, LIEBHERR 4982173, E.W.K. 501518401, LANDINI MASSEY FERGUSON 1430747M1, JCB 200/61801, CNH-FIAT NEW HOLLAND 79004490, VERMEER 1181230011, LARSEN & TOUBRO V20134541, MECALAC 5230071, MAIT 2175047, CNH-FIAT NEW HOLLAND 4982173, DRESSER-FURUKAWA 3150627R1, LIEBHERR 7001334, JOHN DEERE T43322, Piulita, VOLVO 9112-12001, ITM D01060C0N17, LIEBHERR 7001439, JCB JNA0086, VOLVO 44062, JCB JNA0358, VOLVO 14044062, INGERSOLL RAND 56965270, VARIOUS 571009, DRESSER-FURUKAWA 1254381H1, CATERPILLAR 5W9828, JOHN DEERE-CAMECO CB01419006, GAMBETTI-BARRE M175903002, POCLAIN-CASE POCLAIN V2434592
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
EURODAEWOO 9121-6005D11, DRESSER-FURUKAWA 1254381H1, EXTEC VCR1250, CATERPILLAR 5W9828, Buldozer, JCB JNA0358, CNH-FIAT NEW HOLLAND 79009851, POCLAIN-CASE POCLAIN P2434592V, WIRTGEN 43499, DRESSER 260714R1, LANDINI MASSEY FERGUSON 2961659M1, VOLVO SA9112-12001, VOLVO 44062, LANDINI MASSEY FERGUSON 2928706M1, MAIT 2175047, HYUNDAI 81E6-37030, MAIT 2904108, CASE R25688, CNH-FIAT NEW HOLLAND 579383, CNH-FIAT NEW HOLLAND, INGERSOLL RAND 56965270, VARIOUS 571009, BENATI 2001075, JOHN DEERE T45097, LANDINI MASSEY FERGUSON 1430747M1, VOLVO 14526392, Piulita, SAMSUNG-H.I. 9112-01201, SIMIT 45482379, DRESSER 616209C1, BENATI 2001015, POCLAIN-CASE POCLAIN K0134536, KOMATSU 131437, VOLVO 9112-12001, TELCO-TATA 9TD01119/04, JOHN DEERE CQ09338, TELCO-TATA TD01119/04, LIEBHERR 4982173, CNH-FIAT NEW HOLLAND 79004490, VERMEER 1181230011, MECALAC 5230071, JCB 200/61801, JOHN DEERE T43322, LIEBHERR 7001439, LANDINI MASSEY FERGUSON 392826X1, LIEBHERR 7001334, LIEBHERR 7402313, CNH-FIAT NEW HOLLAND 4982173, BERCO CR1250, TELCO-TATA 9TD01583/3, VOLVO 020005225990, DRESSER 311347R2, INGERSOLL RAND 57700858, BERCO CR1250B, LARSEN & TOUBRO V20134541, GAMBETTI-BARRE M175903002, VOLVO 044062, SENNEBOGEN 3528013331, ITM D01060C0N17, DRESSER-FURUKAWA 3150627R1, TELCO-TATA TD01583/3, LIEBHERR 4122664, HANOMAG 2979125M, LIEBHERR 4111100, LANDINI MASSEY FERGUSON 2979125M1, HYUNDAI 81EL-25030, REEDRILL V005767, E.W.K. 501518401, ATLAS-TEREX 0362007, JCB JNA0086, DAEWOO 2121-6014, POCLAIN-CASE POCLAIN V2434592, LIEBHERR 4174947, KOMATSU 00131437, DAEWOO K1043367, POCLAIN-CASE POCLAIN PK134536, DAEWOO 9121-7004, LIEBHERR 4129303, C.M.W-(CHARLES-MACHINES) 107-364, VPI V1M1408, DAEWOO 9121-6005, A.B.G. 21076294, JOHN DEERE-CAMECO CB01419006, CATERPILLAR 1M1408, CNH-FIAT NEW HOLLAND 71401387, LIEBHERR 4253411, VOLVO 14044062, LANDINI MASSEY FERGUSON N1926, 7C-2, POCLAIN-CASE POCLAIN ZKI134536