Expansion Block Valve for Caterpillar 355-1791
Expansion Block Valve for Caterpillar replaces OEM numbers 355-1791, 387-5681. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Caterpillar Compactor: 825K, 826K, 836K – Replaces OEM Number 355-1791
Fits Caterpillar Track Dozer: D6T, D6T XL – Replaces OEM Number 387-5681
Fits Caterpillar Truck: 730 Articulated, 735 Articulated, 740 Articulated – Replaces OEM Number 355-1791
Fits Caterpillar Wheel Dozer: 824K, 834K – Replaces OEM Number 355-1791
Fits Caterpillar Wheel Loader: 950L Wheel, 950M Wheel, 962L Wheel, 962M Wheel, 966M Wheel, 972M Wheel, 980M Wheel, 982M Wheel, 988K Wheel, 990K Wheel – Replaces OEM Number 355-1791
Please verify the OEM reference number and equipment fitment before ordering.








