Parts for Caterpillar 3412E - Oil Section Loading... 1 Oil Pump for Caterpillar 3412, 3412C and 3412E For engines with serial prefix numbers: 3JK, 60M, 7BL, 7HG, 9BR, RLR, RTY & REA. Price: $ 966.06 Qty: ^ Pictures In Stock Add to Cart 2 Oil Cooler core for Caterpillar 3412, 3412C and 3412E engines . Price: $ 941.80 Qty: ^ Pictures In Stock Add to Cart 3 Oil Cooler installation kit for Caterpillar 3412 engines For two coolers Price: $ 52.20 Qty: ^ Details In Stock Add to Cart 4 Seal-O-Ring for Oil Cooler, Caterpillar 3406,3408, 3412 One per oil cooler Price: $ 7.48 Qty: ^ Details In Stock Add to Cart