Caterpillar 3406B, 3306, 3406B, 3406C Oil Cooler Bonnet #8S4304

Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc. APM Heavy Duty is not affiliated with Caterpillar Inc. The use of Caterpillar part numbers is for reference only. All parts listed are aftermarket replacement parts that meet or exceed OEM specifications.

Photograph is generic.