Exhaust Manifold 3937478 for Cummins 4B3.9 QSB5.9 CM850 Engine

Buymachineryparts always want customers to be satisfied with their shopping experience, so the return policy is very important to to ensure their own interests.

To assure customer satisfaction we made this procedure as clear as possible.

We offer 30-day guarantee on receipt of parts.

(For all non-warranty Replacement parts only. Original parts are of no return)

If you received defective quality, damaged or incorrect parts, Please contact us within 30 days for retrun or exchange.

Return / Exchange Conditions & Freight Responsibility

Note: 

Please check whether the product is in good condition before return, We do not accept parts that have

already been installed or not in new condition. If parts are damaged,

please send us the pictures asap for confirming.

Return / Exchange Steps:

1, Contact us via email: sales@buymachineryparts.com, send us pictures for quick confirmation.

2, We will send you the return address after confirmation within 24 hours then waiting for the retrun.

3, After receiving the return and checking that there is no problem, we will resend the order or make refund.

• Refund through Paypal will be received immediately.
• Refund through Credit Card will be received in 5 work days(We will refund and send you the slip,handle time is for bank)

please contact us first for return or exchange,

buyers must ship the package per the instructions provided by the

customer service representative.

Not allowed returns will be rejected.