If the core instructions are not listed on the products, please reach out to us for instructions via email or phone.

Powerhouse Diesel does not provide a label if you select (send in cores first) in some instances we do provide a label if you select (Send in core after)

what is a core charge? 

A core charge is what manufacturers place on a product to ensure they get your old part back because they use some of those components to build new products. Doing this helps keep the cost of production down so they can keep the price to the consumer down.