Return Policy.

Customer Refund Policy & Motor Warranty


All returns must be sent back with in 30 days of ordering. Items sent back after 30 days will be returned at customer expense . Your original, or copy of the invoice must be included with the item. See below for more return and warranty info, as well as RA # required for returns. Shipping amount in not refundable! No returns on used parts.

90 days warranty is to the original purchaser of any motor and or parts only. Once the motor and or parts change hands, the warranty is null and void.



Product or Parts Returned:

1-Customer did not want
2-Customer ordered wrong parts
3-Customer changed mind

Cash refund less 15% restocking fee or full amount if customer prefers a credit to used later.

Product Returned Because We Sent Wrong Part:

Replace part or full refund or credit (as preferred)

Product Returned Because Defective:

Replace part or full refund or credit (as preferred)

No Returns On Electrical Items

There is a 15 % charge for any motor orders submitted, then canceled, because, we incur expenses with our machine shop as soon as we process the order.

Special Order Items:

Special order items must be paid for in advance of ordering as many of these items we do not keep in stock. No refunds will be given unless the order is not shipped, then a 15% restocking fee is charged.  No exceptions.

Kit Motors:

No returns on ‘kit’ motors after any assembly has started. Prior to assembly a 25% restocking fee will apply.

* NOTE* RA Number

Returns, require a “RA”, return authorization number.

Please call 1-937-217-6926 , or E-Mail [email protected] for the number. If merchandise is returned, without the number, it can get mixed with incoming parts shipments, proper credit is not given.

Remanufactured Motors:

90 days, From the Purchase Date, Limited to Manufacture of Parts Warranty and Labor

* Warranty,90 days from the date of purchase for the sake of continuity, will begin on the date we ship the motor. This is a date we can control, we are not able to control the date you receive the motor, or the installation date.


Note on core returns for motors:
We must have all core motor / parts back with in 30 days or you will be charged the core charge and we reserve the right to cancel your 90 day warranty. Cores are very important to us and must be returned in a timely manner.

If you feel you have a warranty issue, please do not disassemble the motor with out written permission from us. To do so will void your warranty.

Motor Orders – Deposits And Refunds

Placing an order requires a $100.00 deposit
Balance due is 50 % at time the build begins, then remaining balance due at shipping, or pick up.

Cancellation of a motor order after the order has been processed and the deposit has been taken, will constitute forfeiture of your deposit due to shop labor incurred as well as machine shop fees incurred.

If you place a order and the motor has been built, ready to ship, then you cancel the refund is less 25 % of your funds paid. This for cost of labor, machine work done, and paid for parts purchased not normally stocked, as well as items we can not re use, or return. No Exceptions.



Overheating, head gasket failure, cracked block or head, is not covered due to the nature of the problem, as we are not able to control the parts (cooling system, radiator, water pump, fan sensor, heater core etc.) that may have lead to the failure, and or the preventive maintenance required to prevent this from occurring. It is the customers responsibility to have a cooling system that is up to par, and maintain same.

If a motor is returned due to overheating, and the problem is found to be not a parts failure, the owner (customer) will be responsible for the labor as to tear down, and re build as well as parts required.

Oil Leaks:

Oil leak warranty is limited to parts only. If an oil leak is noted or develops within the 90 day warranty, we do offer the failed part replacement only. Labor charges are not covered.

Oil & Coolant Level Re Man Motor:

During the warranty period it is the customers responsibility to closely monitor the the oil level, and coolant level. Low oil can result in bearing damage, with motor failure. If an oil leak should develop it must be repaired immediately. The same pertains to the coolant system. Coolant must be maintained at the proper level or overheating and motor damage will occur.

No warranty will apply if the motor is damaged due to oil or coolant neglect.

Cracked Blocks:

We guarantee the block to be good at time of shipping, and start up. However, we do not guarantee the block from either internal, or external cracks due to freeze up from, no, or insufficient anti freeze, and or any other reasons such as casting defects that can show up later.

Blocks do not “just crack” later on, if the block is good at time of delivery, and start up, the block would be deemed good. If shown that a defective piston, or other motor part, caused the crack, this would be covered by warranty.

Cracked Head:

We guarantee the head to be good, and free of defects at the time of sale.

Each head is pressure tested to insure it is sound, as well as all injectors holes are inspected, a injector is threaded in to each hole, then torqued to its (55-58lbs) correct value. The same applies to the glow (14-18 lbs) plug holes. Everything that requires inspecting is done prior to our installing a head on a block, the same for the sold outright heads.

If a complete motor is sold (we installed the glow plugs, and injectors), the coverage is full, and for the 90 day period. If a long block is sold (customer, or shop installs the glow plugs and injectors), the warranty does not cover cracks, in, at, or around the glow plugs, or injectors ! Using the incorrect tool, or excessive torque will crack, strip, or ruin the head.

The same applies to heads sold outright cracks are not covered as we have no control over how the head is handled once it leaves our shop. There are no exceptions to the above.

* Labor Expenses *

Any and all labor charges to install a motor, or part, are entirely the expense of the customer, as well as any parts required, but not supplied by us, and deemed necessary by the installing shop and agreed to by the customer.

The same applies to a part that must be returned for warranty reasons. We will repair or replace the part at our discretion, but do not pay labor expenses for removal or re installation.

All repairs must be authorized by AC Machining, if there is an instance that requires work to be done by any one other than AC Machining the cap on hourly charge for labor is $45.00 / hour.  This MUST be authorized by us prior to any repairs being made or your warranty will be null and void.  No exceptions.

Oil Pressure Related Failure:

Covered is the oil pump itself. If suspected, you must send it to us for testing. We have a test bench, if found to be at fault, we will replace it with a new pump.

Other oil pressure related problems are not covered due to the nature of the problem. We can not control the oil used, oil change intervals, oil filters used (we have known cheap oil filters to shed the material to the system), as well as any debris that may have entered the system through the oil filter hole or by other means.

Timing Belt / Initial Set Up -Internal Damage:

Timing belt maintenance, adjustment, and replacement are strictly up to the customer. We can not warranty any damage done by timing belts, either on the complete motor, or the long block. Belt miss-adjustment, or failure, can do a great deal of damage. New motors, are of course not shipped with internal damage. Any internal damage done must be assumed done by shop, or customer set up.

Oil changes, and failure to check, and maintain the correct level is a condition we can not control. The motor can be severely damaged by too low an oil level, or to long between oil changes. Customer is responsible for the initial oil fill, as well as all changes, and maintaining the correct level. See your tag that comes with your re built motor for the recommendations.

Injection Pump Warranty:

Sold separate, or installed on our re built motors.

(*Note* Once sold, injection pumps may not be returned for a refund, only for repair / replacement. Even if in the – under some circumstances, we may offer a credit, less the 15 % re-stocking fee, but only for very hard to get pumps, again no cash or credit card refunds – original unopened package.)

You must install a new fuel filter at time of installation as well as each 7500 miles while the pump is under warranty. Receipts must be provided.

The injection pump are warranted for 90 days, unlimited miles. You must return it with in the allotted time for repairs, should the need arise.

If the pump is found to be tampered with, seals broken, adjustments made, modifications etc., other than idle, the warranty is void. If the internals of the pump are found to contain foreign matter (debris from your fuel system), the warranty is also void.

If the injection pump is ruined due to the timing belt being over tensioned (this will take out the shaft bearings and internals) the pump warranty is void.


If a kit motor is purchased the warranty is strictly parts only.

If the part caused the problem, the work (parts and labor, our shop for labor only), is covered by the 90 day warranty.

“Customer Commissioned Builds”

These are motors we build, that are shipped to us by customers, in lieu of purchasing a “exchange motor” . Essentially we build your old core motor, then ship it back to you. No core charge is required or incurred.

Note: Motor block and heads are inspected prior to the builds. All precautions are taken to make sure the motor and associated parts supplied to us are good to rebuild. We do not, however, warranty the “soundness” of the motor past the initial build, that is if any parts are later found to be internally (crack etc.) bad we will not assume responsibility for same, as these are parts supplied to us by the customer, not our own selected parts.

Sometimes these motors are damaged beyond the “normal” rebuild and will require additional parts (i.e camshaft, extensive head repair etc.), if this is the case, we will notify your prior to any work being done.or parts purchased .

In the case where one of these “Customer Commissioned Builds” builds is not paid for in a timely (which is discussed at the time the build is agreed to by both parties) fashion, we then send you a check for what we pay for “core motors” then the motor is sold to cover expenses and profit.

Tool Warranty:

All Tools are warranty to be free of defects at time of sale. If a tool is found to be defective, we will replace (no refunds), or repair the tool, at our discretion.

* Note * Shipping Charges Are Not Refundable

Warranty Work:

Any warranty work must be approved in advance. We generally do not pay other shops to do work. We, in most cases, must have the part returned to us, to be inspected, then repaired as necessary.

We can not control the quality of the work at other shops.

In some cases, we will “work out”, a repair with a customer’s shop. However, we must be apprised of the entire job, cost etc. in advance, then agree to it.  These cases will also have a labor expense cap of $45.00/hour and must be authorized prior to any work being done.

All warranties, motors or parts, are parts replacement, or repair, at our discretion. No refunds.

*Note* Warranty is limited to the failed part, the part, only the failed part, is to be returned. i.e. bad crank, send only the crank etc.

Ship only the failed part, parts that require disassembly are charged at the rate of $55.00 per hr.

A Note on Bio-Diesel or Vegetable Oil

We, as well as our injection pump re builder WILL NOT warranty our motor, injection pump, or any associated part of same, if any Bio-Diesel Or Vegetable Oil product is used for fuel. The motors, injection pumps and associated parts are designed to be run on what the motor was engineered by VW for diesel fuel. Run other that Diesel Fuel, and your run the risk of damage.

No Warranty coverage if any product other than diesel fuel is used.


* Used Parts Warranty *

30 Days

Limited to replacement of like item, or refund, if we do not have a replacement part.

Core Charge Information:

We do not charge a core charge, however we do need all core’s returned in a timely manner. 30 days from date of shipping your motor, or parts. No exceptions, without prior contact, and our issuing an extension.

In the case were a core charge is required due to a purchased part, from a supplier, we require the core back with in 30 days (No Exceptions), for a credit, or refund to be issued.

Good cores are extremely important to keep our business going. It is the responsibility of the customer to return any, and all core’s we request in the course of a sale. The customer must pay shipping. We reserve the right to charge your credit card, or invoice you, for the appropriate amount (see below), if you decide to retain the core(s), or the core(s) are damaged to the point they can not be re built or the core is not of like make.

Heads Mechanical ====$250.00 ea.
Heads TDI ==========$250.00 ea
Heads Hydraulic ======$250.00 ea.
Crank ==============$75.00 ea.
4 Rods =============$150.00 (4)
Heads Turbo==========$250.00 ea.
Turbochargers ========$250.00 ea.
Block Complete========$275.00 ea.
Block’s TDI ===========$350.00
Block Complete Turbo ===$275.00 ea.
Injection Pumps ========$100.00 ea.
Injection Pumps Turbo ===$150.00 ea.
Vanagon Pumps =======$150.00 ea.
Vanagon Oil Pan =======$300.00 ea.
Injectors =============$15.00 ea.

Cores must be in like condition to the part you receive, i.e. a turbo head requires a
turbo core, injection pumps the same and so on. We reserve the right to reject
cores because of condition, incomplete etc.

* Note * If the core part in question is not returned within 30 days of shipping your replacement item, the core charge will be applied. At that point if the customer’s part is returned, after the 30 days, we simply return the part.

Installed Parts:

Any and all parts removed from packaging and
installed on a motor will be considered  used parts.We can not resell parts that have been installed, and or handled, as new parts. We do not take back installed parts for this reason.

* Invoice Note *

Refunds as stated on your invoice, may be “cash”, check, card reimbursement, and or a credit, to be used later. This in accordance with the condition (must be in original box, clean, and resellable as new) of the returned parts.

Broken parts will be returned to customer, no credit will be issued in this case.

No exceptions.