For more than ten years Caterpillar (CAT) has built mini excavators and sold its 100,000st unit in 2008. Mini excavators are very important to Caterpillar, producing in Japan and Desford, England. Because of their limited size these machines can be operated in places normal excavators cannot reach. Several of Mitsubishi’s diesel engines are perfectly suited for these mini excavators, for example diesel engine LE3, S3Q2, K4E-D31NSA, S6S and S4L-Y263KL.
Caterpillar offers a wide range of track loaders for the construction equipment industry. The 939C, 90hp is Caterpillar’s smallest track loader, it has a load capacity of a little over 1m3. The machine can be operated by using a joystick only and perfectly transmits power to both tracks. The Mitsubishi diesel engine S6S-DT is very suitable for the 939C.
| Cat-type | Cat-machine | Engine | Supplier | Engine-model |
| Skid steer loader | 277B | Mitsubishi | S4S-DT | |
| Skid steer loader | 287B | Mitsubishi | S4S-DT | |
| Skid steer loader | 287C | 3044C | Mitsubishi | S4S-DT |
| Skid steer loader | 297C | 3044C | Mitsubishi | S4S-DT |
| Excavator | 303CR | Mitsubishi | S3L2-E2 | |
| Excavator | 303SR | Mitsubishi | S3L2-E2 | |
| Excavator | 304CR | Mitsubishi | S4L2-E2 | |
| Excavator | 305SR | Mitsubishi | K4N-E2D | |
| Excavator | 301.5CR | Mitsubishi | L3E-W2 | |
| Excavator | 305CR | Mitsubishi | K4N-E1 | |
| Forklift | FD35-50 | Mitsubishi | S6S (IDI) | |
| Forklift | FD60-70 | Mitsubishi | S6S (IDI) | |
| Forklift | DP15 | Mitsubishi | 4DQ7 | |
| Forklift | DP18 | Mitsubishi | 4DQ7 | |
| Forklift | DP15 | Mitsubishi | S4Q2 | |
| Forklift | DP18 | Mitsubishi | S4Q2 | |
| Forklift | DP25 | Mitsubishi | S4S | |
| Forklift | DP30 | Mitsubishi | S4S | |
| Forklift | DP30K | Mitsubishi | S4S-51FL | |
| Forklift | DP40 | Mitsubishi | S6E | |
| Forklift | DP40 | Mitsubishi | S6S | |
| Forklift | DP60 | Mitsubishi | S6S | |
| Forklift | DP70 | Mitsubishi | S6S | |
| Forklift | DP80 | Mitsubishi | 6D16 | |
| Forklift | DP90 | Mitsubishi | 6D16 | |
| Forklift | GP15 | Mitsubishi | 4G63 | |
| Forklift | GP18 | Mitsubishi | 4G63 | |
| Forklift | GP25 | Mitsubishi | 4G63 | |
| Forklift | GP40 | Mitsubishi | 6G72 | |
| Forklift | GP40L | Mitsubishi | 6G72 | |
| Excavator | 307B | Mitsubishi | 4M40 | |
| Excavator | 307C | Mitsubishi | 4M40-E1 | |
| Excavator | 307C SB | Mitsubishi | 4M40-E1 | |
| Excavator | 308C | Mitsubishi | 4M40 | |
| Excavator | 308C CR | Mitsubishi | 4M40-E1 | |
| Excavator | 311B | Mitsubishi | S4K-T | |
| Excavator | 311C | Mitsubishi | S4K-DT | |
| Excavator | 311C U | 3064 T | Mitsubishi | S4K-T (DT) |
| Excavator | 312B | Mitsubishi | S4K-T | |
| Excavator | 312C | 3064 T | Mitsubishi | S4K-T |
| Excavator | 312C L | 3064 T | Mitsubishi | S4K-7 (DT) |
| Excavator | 313C SR | Mitsubishi | S4K-DT | |
| Excavator | 313C CR | Mitsubishi | S4K-DT | |
| Excavator | 314C LCR | 3064 T | Mitsubishi | S4K-T (DT) |
| Excavator | 315 | Mitsubishi | S6S-DT | |
| Excavator | 315C | Mitsubishi | S6S-DT | |
| Excavator | 315C L | Mitsubishi | S6S-DT | |
| Excavator | 317B | 3046 T | Mitsubishi | S6S-DT |
| Excavator | 318B | 3046 T | Mitsubishi | S6S-DT |
| Excavator | 318C | 3066 T | Mitsubishi | S6K-T (DT) |
| Excavator | 318C L | 3066 T | Mitsubishi | S6K-T (DT) |
| Excavator | 318C N | Mitsubishi | S6K-T (DT) | |
| Excavator | 320 | Mitsubishi | S6K-T | |
| Excavator | 320C | Mitsubishi | S6K-DT | |
| Excavator | 320C L | Mitsubishi | S6K-DT | |
| Excavator | 320C L VA | Mitsubishi | S6K-DT | |
| Excavator | 320C LN | Mitsubishi | S6K-DT | |
| Excavator | 320C LN VA | Mitsubishi | S6K-DT | |
| Excavator | 320C U | Mitsubishi | S6K-T | |
| Excavator | 320C LU | Mitsubishi | S6K-DT | |
| Excavator | 320C S | Mitsubishi | S6K-DT | |
| Excavator | 320C S | Mitsubishi | S6K-DT | |
| Excavator | 320C S VA | Mitsubishi | S6K-DT | |
| Excavator | 320C VA | Mitsubishi | S6K-DT | |
| Excavator | 320D | Mitsubishi | S6K-DT | |
| Excavator | 320DL | Mitsubishi | S6K-DT | |
| Excavator | 321B LCR | Mitsubishi | S6K-DT | |
| Excavator | 321C CR | Mitsubishi | S6K-DT | |
| Excavator | 321C LCR | Mitsubishi | S6K-DT | |
| Excavator | 323D L | Mitsubishi | S6K-DT | |
| Excavator | 323D LN | Mitsubishi | S6K-DT | |
| diesel engine | 3044C-T | Mitsubishi | S4S-DTDP | |
| diesel engine | 3044C DIT | Mitsubishi | S4S-DT | |
| diesel engine | 3046 | Mitsubishi | S6S-(DT) | |
| diesel engine | 3046T | Mitsubishi | S6S-DT | |
| diesel engine | 3064T | Mitsubishi | S4K-T (DT) | |
| diesel engine | 3066 | Mitsubishi | S6K-T | |
| diesel engine | 3066T | Mitsubishi | S6K-T (DT) | |
| diesel engine | 3066 ATAAC | Mitsubishi | S6K-DT | |
| Skid steer loader | 236B | 3044C | Mitsubishi | S4S-DT |
| Skid steer loader | 246B | 3044C | Mitsubishi | S4S-DT |
| Skid steer loader | 248B XPS | Mitsubishi | S4S-DT | |
| Skid steer loader | 256C | 3044C | Mitsubishi | S4S-DT |
| Skid steer loader | 262B | Mitsubishi | S4S-DT | |
| Skid steer loader | 262C | 3044C | Mitsubishi | S4S-DT |
| Skid steer loader | 268B XPS | Mitsubishi | S4S-DT | |
| Skid steer loader | 272C | 3044C | Mitsubishi | S4S-DT |
| Material Handling | 320C MH | Mitsubishi | S6K-DT | |
| Mini excavator | 301.6C | 3003 | Mitsubishi | L3E |
| Mini excavator | 301.8C | 3003 | Mitsubishi | L3E |
| Mini excavator | 302.5C | 3013 | Mitsubishi | S3L2 |
| Mini excavator | 303CR | Mitsubishi | S3L2 Z363SPH | |
| Mini excavator | 303.5C C | Mitsubishi | S3Q2-T | |
| Mini excavator | 303C CR | Mitsubishi | S3Q2 | |
| Mini excavator | 304C CR | Mitsubishi | S4Q2 | |
| Mini excavator | 305C CR | Mitsubishi | S4Q2-T | |
| Mini excavator | ZR 02 | Mitsubishi | K3B-31DS | |
| Mini excavator | ZR 12 | Mitsubishi | L3E-W262KL | |
| Mini excavator | ZR 15 | Mitsubishi | L3E-W262KL | |
| Mini excavator | ZR 25 | Mitsubishi | S4L-Y262KL | |
| Mini excavator | R 35 | Mitsubishi | S4L2-Y263KL | |
| Mini excavator | ZR 4 | Mitsubishi | K3E-31NSA | |
| Mini excavator | ZR 45 | Mitsubishi | S4Q2-Y262KL | |
| Mini excavator | ZR 8 | Mitsubishi | K4E-D31NSA | |
| Mini excavator | 303.5C CR | Mitsubishi | S3Q2-T | |
| Multiterreinlader | 267B | Mitsubishi | S4S-DT | |
| Rupsdozer | D3C | Mitsubishi | S6S-D | |
| Rupsdozer | D3C-DD | Mitsubishi | S6S-D | |
| Rupsdozer | D3G | Mitsubishi | S6S (DT) | |
| Rupsdozer | D3G LGP | Mitsubishi | S6S-DT | |
| Rupsdozer | D3G XL | 3046 T | Mitsubishi | S6S-DT |
| Rupsdozer | D4C | Mitsubishi | S6S-D | |
| Rupsdozer | D4G | Mitsubishi | S6S-(DT) | |
| Rupsdozer | D4G LGP | 3046 T | Mitsubishi | S6S-DT |
| Rupsdozer | D4G XL | Mitsubishi | S6S-DT | |
| Rupsdozer | D5C | Mitsubishi | S6S-DT | |
| Rupsdozer | D5D-DD | Mitsubishi | S6S-DT | |
| Rupsdozer | D5G | Mitsubishi | S6S-DT | |
| Rupsdozer | D5G LGP | 3046 T | Mitsubishi | S6S-DT |
| Rupsdozer | D5G XL | 3046 T | Mitsubishi | S6S-DT |
| Rupslader | 933C | Mitsubishi | S6S | |
| Rupslader | 933C Hystat | Mitsubishi | S6S | |
| Rupslader | 933C Hystat LGP | Mitsubishi | S6S | |
| Rupslader | 939 | Mitsubishi | S6S-DT | |
| Rupslader | 939C | Mitsubishi | S6S-DT | |
| Rupslader | 939C Hystat | Mitsubishi | S6S-DT | |
| Wiellader | 904B | Mitsubishi | S4Q2-T | |
| Wiellader | 906 | Mitsubishi | S4S-DT | |
| Wiellader | 906H | 3044C | Mitsubishi | S4S-DT |
| Wiellader | 907H | 3044C | Mitsubishi | S4S-DT |
| Wiellader | 908 | Mitsubishi | S4S-DT | |
| Wiellader | 908H | 3044C | Mitsubishi | S4S-DT |
| Wiellader | ZL 2B | Mitsubishi | K4D-61KL | |
| Wiellader | ZLS 2B | Mitsubishi | K4D-61KL |