Caterpillar C13 Acert Exhaust Manifold C13-4409 *Please Verify Your OEM Number(s) Before Purchasing. *This product is not legal for sale or use in California. We can not ship this product to California. Upgrade to this Exhaust Manifold for Cat C-13 Acert KCB and LEE engines. Replaces OEM C13-4409, i... See More