US Diesel Parts FAQ

When making an order through US Diesel Parts you are agreeing to the below terms of service and related terms for returns, warranty and customer obligations for core return and eligibility for qualifying acceptance for each in question.

As you browse through our website, you'll notice that we do offer free shipping on many items. Our free shipping offer is only good for select items that are marked to include free shipping, and the order must be shipped to an address within the lower 48 states within the United States. Orders shipping outside of the United States (lower 48) do not qualify for free shipping. Also, if you return an item for a refund that included Free Shipping, then the shipping charges that we paid to deliver it to you will be deducted from your refund.

All sales shipping to California require a City & County Sales Use Tax. We apologize for this inconvenience. If you are unsure of your local tax rates, please see: https://www.cdtfa.ca.gov/taxes-and-fees/rates.aspx

UPS / FedEx orders that are placed by 12pm MST on Monday through Friday (except holidays) will generally ship on the same day. Orders placed after 12pm MST will ship the following business day.

Some products have build-times or extended processing times but are typically noted for how long it may take before shipment. Build-Time does not include the time for arriving after shipping - Example: if an item has a 2-3 day Build-Time, it will take 2-3 days to build and will then ship out. It then take as long a time for delivery as was selected for shipment method.

We cannot guarantee same day shipments or what carrier is used on orders that are drop-shipped from other warehouses due to item availability, different time zones and warehouse policies. If there are any known delays then we will attempt to contact the customer as soon as possible. If it is important that you receive your item by a specific date, then please call us to verify availability and discuss shipping options.

When you finalize your online order with us, you will have the choice of using several options from UPS. However, sometimes we may have to use an equal service from the another carrier depending on where your order is shipping from and the final destination of your order. If we do use another carrier such as USPS or FedEx, then we will make every attempt to see that you still receive the item as fast or faster than the UPS service that you chose. If it is important to you that a particular shipping service is used, then please call or email prior to your order to discuss your options.

If the item you ordered isn't immediately available to ship, then we will make every effort we can to contact you. However, many other things can affect the delivery time of your order such as:

• time of day the order was placed
• weekends or holidays
• increment weather
• mechanical problems
• back-ordered item

Please keep in mind that expedited delivery services do not apply to weekends or holidays. For example, if you order an item on a Friday and choose UPS Next Day Air, it will arrive on the following business day (not Saturday). If you need an item to be delivered on a weekend or holiday, then please call us at (800) 823-4444 to discuss your options.

Shipping companies do not guarantee delivery times during major holidays or during increment weather. Please allow extra time for deliveries during these times. You can also contact us to verify availability and to discuss expedited shipping options if it is important that you receive your order by a specific time.

We no longer ship internationally. The main reasons for this is our industry deals in many products that require a core return for rebuild and re-manufacture. The costs to do so internationally have gone up considerably and the reliability of receiving a usable core back have gone down in turn. The other reason is that the taxes, tariffs and other border-charges have become wildly erratic - enough so that, until brought to order, we are washing our hands of it.

Yes! We do ship to Alaska, Hawaii.. However, shipments to those areas are excluded from our Free Shipping offers. It should also be noted that our website isn't very good at calculating shipping charges outside of the lower 48 states, so the shipping rates calculated during checkout may be subject to additional shipping charges. This is rare, and if it does happen, then we will contact you.

Yes, we are happy to ship to APO/FPO address' through our website. However, if you experience any problems with an APO/FPO address during checkout, then please call us and we will help complete your order over the phone.

We do NOT ship to Freight Forwarders. There are no exceptions. If you place an order and use a freight forwarding company as a delivery address, then your order will be canceled and refunded.

Occasionally the manufacturers we order our parts from can run into production problems that may prevent us from keeping those items on our shelf at all times. If you order an item that we don't have in stock, then we'll contact you to let you know that your order has been placed on backorder. This means that we intend to fill your order as soon as your item(s) are available.

Items that were purchased with a gift certificate cannot be returned for cash refunds. If you purchase a product with a gift certificate and wish to return it, then you will be issued a new gift certificate in the amount of the original purchase of the item. Restocking fees will be deducted from the new gift certificate issued.

Returns of non-defective items for refund are subject to a restocking fee to cover costs associated with handling and invoicing. The restock charge is calculated on the total cost of your original invoice (not including shipping costs). Restock charges do not apply to warranty returns or exchanges for items of equal or greater value.

USDieselParts.com is an online extension of Gomer’s Diesel, which is a real “brick and mortar” facility that began business in 1938 and is still going strong in Missoula, MT. We have a 20,000 square foot facility with a customer showroom, parts department, fuel injection and turbocharger rebuild shop, a vehicle repair shop with 7 bays, 3 vehicle lifts and a Mustang MD-1100 dyno. We have a full staff of dedicated and knowledgeable folks that can help you with any diesel related questions you have and find the parts you need quickly.

Some products on our website include a free Gift Certificate that is good towards your next online purchase at USDieselParts.com. When you purchase an item that includes a free Gift Certificate, you will be sent a unique code that you can use during your next online purchase to redeem your Gift Certificate. This unique code is only redeemable by the purchaser of the original product.

Items that were purchased with a gift certificate cannot be returned for cash refunds. If you purchase a product with a gift certificate and wish to return it, then you will be issued a new gift certificate in the amount of the original purchase of the item. Restocking fees will be deducted from the new gift certificate.

Occasionally the manufacturers we order our parts from can run into production problems that may prevent us from keeping those items on our shelf at all times. If you order an item that we don't have in stock, then we'll contact you to let you know that your order has been placed on backorder. This means that we intend to fill your order as soon as your item(s) are available.

We do everything we can to ensure that the prices our site are correct, for our products and for those sold through us from multiple manufacturers. Sometimes errors are made. Products prices from so many manufacturers can change on a daily basis. Part #'s can change - be superseded - be on back-order - or may even be no longer available.

Prices may be changed at any time without notice and we reserve the right to change our product's prices at any time without further notice. However, if you have ordered a part or product that is no longer available, has changed in price or was priced in error - this can be handled in a few different ways:

• We will always try to come to an agreement on the changed cost or even a discount off the correct cost if a product was priced in error.
• If a product has been superseded we will either try to send out the updated part for a matched price or contact you if the price difference between the two is too great.
• If a product has gone into back-order status we will contact you with an estimated time the part will be available again or to see if a similar part will work if available.
• If a product is no longer available we will contact you to see if a similar part will work and an agreement on cost can be made.
• If an agreement cannot be reached, for any reason, the full cost of the order will be refunded before the order is canceled.

Gomers Inc. and/or US Diesel Parts is not liable or obligated to sell a product at an advertised price if the pricing was made in error. We try very hard to keep our prices competitive and fair but DO NOT condone the use of bait-and-switch tactics. Please understand that mistakes can be made and we will always try to work with a customer or client to come to an amicable agreement.

• Core: A Core is simply your old part or part's. When a product is sold as rebuilt or remanufactured, you have to send in your old part so it can be rebuilt to sell to the next customer. This is VERY important because many parts are no longer in production. The only way to get them now is to rebuild an old part back to new or better quality. Some parts have become so rare that the only way to get a working one is to send in that part to have it rebuilt and then sent back to you. This means if you don't have a part for a core you may not be able to get a replacement at all. Common automotive parts you will see asking for old parts as "Core's" are batteries, power-steering pumps, injectors, fuel pumps, engines, transmissions, etc...

• Core Charge: The Core Charge is a dollar amount the manufacturer has valued your old part is worth to them if you were to NOT send back a part to be rebuilt. This charge depends upon the cost of the item and also the rarity of cores to rebuild. If a part is hard to find the core charge can end up being more than cost of the part itself. The manufacturer wants to make sure it's worth it to you to send in a core for refund but also worth it to them if you decide NOT to send one. If you don't send in a core, you don't get a core refund.

• Core Refund: A Core Refund is the money you get back once you send in your core! Please see "Core Acceptability" to help ensure get a full refund.

In order for a core to be accepted for a refund it MUST meet the following criteria:

• Cores must NOT be overly damaged and must in a re-buildable condition - If its been in a fire, has a cracked case, or has been overly corroded like it has been underwater, it will not be accepted. If your Core is damaged and/or un-repairable you may only receive a partial refund or no refund at all. Please keep this in mind if going to a salvage yard in need of a core.
• Cores must be Like-For-Like. You cannot send in a part from a different model, make, or year. Example: you cannot send in a Chevy Transmission core if you bought a Dodge Transmission.
• Cores must be returned within the 45 day return window - No exceptions will be made unless you contact us before then to extend the return time.

Accepted Cores that are in good shape will almost always receive a full refund for the core charge. A Core will be considered in good shape if it is rebuildable. This just means that even if it doesn't function correctly or is worn out, the manufacturer can still fix it.

A part with a core charge has the option to either pay the core charge amount or "Send Core in first, pay no core charge: $0.00".

This option is there if you intend to send in your old parts before the new/remanufactured parts are shipped.

We CANNOT ship your new part until your core is received and accepted or a core charge is paid!

If you order a part while selecting to pay no core charge, and then select expedited shipping (overnight, 2nd or 3rd day), your part will not ship until your core is received and accepted and will then ship at your chosen shipping speed.

1. Verify that you are not over the 45 day return time for returning a core. If you are, please call to find out if your return time can be extended before continuing to return the core.
2. Put your core part into the box or packaging that the new part arrived in. Please remember to place parts that are dirty or may leak fuel/oil in a plastic bag.
3. You can print a Core Return Slip with your name and order # to put in the box with your core. This will help us get you a refund as quickly as possible for your core return.
4. Ship the package as directed below. Unless specified, shipping charges for the core are the responsibility of the purchasing party.

Small part cores should be returned directly to the address below. If you have an engine or transmission core, please call us on our toll free # 1(800)823-4444 to verify the return location.

Core returns must be sent & received within 45 days after your new part arrives to you. If we have not received your core after 45 days, or been contacted with information on when the core will arrive, the order will be marked as "No Core Returned" and the core charge will no longer be refundable.

If a core return has gone over the 45 day return limit, the cash value of that non-return is then used to purchase another core to keep the remanufacturing process going. This ensures a rebuilt product will be available for the next customer.

Refunds are quick! A refund will be made through the purchasers’ payment method typically on the same day it is received. From there is depends upon the purchasers’ bank or account on how fast the refund shows up as available. Accounts such as PayPal are almost instant while some bank accounts can take up to 3 to 10 days to process.