Part Description BACK Caterpillar 3406B (Stock # P-228409) Oil Coolers Price to be quoted Quantity 1 Add to Cart Part Type Oil Coolers Serial# 4N640 Part# 4N640 Engine Make Caterpillar Engine Model 3406B Casting# 4N640 Condition Used Description USED CATERPILLAR 3406B OIL COOLER END