Terms & Conditions

Appointment Policy

American Heritage Performance is Strictly by appointment only. We do not see or service drive up or stop by customers. All visits, regardless of reason, to American Heritage Performance must be scheduled and approved by American Heritage Performance management prior to arrival. An appointment can be made by calling us at 310-326-2399, by emailing us via the "Contact Us" portion of the website, and/or by emailing us at: HP@americanheritageperformance.com

Terms & Conditions

Return Policy

Returns must be made within 15 days upon receipt and require a "Return Merchandise Authorization" or "RMA" number. To obtain an RMA number, contact customer service at 310-326-2399 or email us at parts@americanheritageperformance.com

Returned items are subject to a 20% re-stocking fee. In order for products to be eligible for return or exchange, they must be received in proper condition. The customer is responsible for ensuring proper packaging to maintain the condition of the parts when returning them. Any parts received in damaged condition will not be eligible for return and will be returned to the customer at their expense.

All items considered for return must be in new non used condition and unopened packaging.

Terms & Conditions


No cancellations on custom Built to Order products (All Cylinder Heads and Engines are Custom Built to Order products). Once an order is placed for a Custom Build to Order Product, all sales are final.

20% cancellation fee on all orders canceled before shipping out (Does not apply to non cancelable Custom Built to Order products).

Terms & Conditions


All orders are fully insured, trackable and shipped via FedEx or United States Postal service unless otherwise stated.

Terms & Conditions

Cylinder Head Core Disclaimer

All core return cylinder heads must be fully assembled and in good re workable condition. We will not accept damaged heads as core returns. Damage can apply to cylinder head castings and/or cylinder head hardware.

We will only accept stock GM non-reworked cylinder heads as cores. We do not accept any previously reworked cylinder heads as cores.

The stock GM titanium intake valves have a hardness coating on them from the factory. This hardness coating is required to be 100% intact in order for the titanium intake valves to be re workable and accepted as core returns. If the titanium valve coating is damaged in any way, the valves will not be accepted as returns and the core return amount due to the customer will be deducted $110 per damaged intake valve.

Note: Once we receive core return heads, they take 5-15 business days to process (tear down and inspect) before the paperwork goes back to the office and the appropriate core return credit can be issued back to the customer. Once the core return credit is issued back to the customer's CC, it can take 2-5 business days for the core return amount to re appear on your CC (time it takes depends on customer's bank).

Terms & Conditions

Notes for Sending in of Cylinder Heads to be ReWorked

Cylinder Head must be fully assembled with valves and springs installed.

Remove rocker arms (unless also sending them in to be reworked) & rocker arm bolts.

Remove intake valve lash caps (you will need to reinstall these once you receive your reworked heads back).

Remove spark plugs.

Remove coolant temperature sensor.

Remove brackets and bolts from rear of cylinder heads.

Remove coolant block-off caps & block-off cap bolts at rear of cylinder heads (if equipped... Many LS7 heads have rivets installed in these holes from the factory vs having the coolant block-off caps and bolts.


American Heritage Performance is not responsible for any above listed parts that were not removed from the heads that should have been (as per listed above) prior to sending in cylinder heads.

Terms & Conditions


AHP offers a 3% paying by Cash (not check or money order, green cash only) discount to our in-house customers (vehicles being serviced at our shop and/or parts being picked up at our shop).

AHP no longer offers any other form of discount other than above mentioned to anyone other than AHP Dealers.

For additional information or to become an AHP Dealer, contact us @ HP@americanheritageperformance.com

Terms & Conditions

Parts not Provided by AHP

American Heritage Performance is not responsible for failures of parts provided by customers and full labor will be charged, plus any additional applicable diagnostic fees and/or labor charge for removal, repair (if applicable)/replacement and installation of said defective customer provided part at the customer's expense.

Please note that this means if you provide parts that are incorrect, damaged, and/or defective, you may be charged labor at our full shop rate of $165 per hour plus any applicable fees, etc...

Terms & Conditions

Engine Warranty

American Heritage Performance warrants its in house built Engines to be free from defects in workmanship and/or material for a period of 3 months or 12,000 miles. This only applies to AHP Engines installed and tuned in-house by AHP or 30 days for engines not installed and tuned in-house at American Heritage Performance.

Warranty excludes but is not limited to:

- Failure due to over-rev and or user error (abuse, misuse, or negligence resulting in damage)

- Failure due to over heating

- Racing/Track use (private or sanctioned)

- Improper tune or failure due to detonation

- Improper break-in

- Electronics failure

- Oil starvation and/or improper lubricant/oil

- Damage due to ingestion of foreign objects

- Damage due to vehicle accident

Terms & Conditions

Vehicle Service Warranty

American Heritage Performance guarantees all parts and services provided to be free from defects in workmanship and material for a period of 3 months or 12,000 miles. This only applies to parts supplied and installed by American Heritage Performance. We offer no warranty in any way on customer provided parts and associated service to install said customer provided parts.

Warranty excludes but is not limited to:

- Racing/Track use (private or sanctioned)

- Parts failure of non AHP provided part

- Electronics failure

- Failure of non AHP manufactured parts

- Damage or failure due to failure of other components or vehicle accident

- User error (abuse, misuse, or negligence resulting in damage)

- Failure due to overheating

- Failure due to detonation

- Pre-existing conditions

Terms & Conditions

Cylinder Head Guarantee

American Heritage Performance guarantees that its in-house build cylinder heads to be free from defects in workmanship and material at the time of customer receipt of cylinder heads and/or first startup of vehicle

Terms & Conditions

Vehicle and Parts Storage

American Heritage Performance does not store vehicles and/or parts for jobs that we are not actively working on and/or jobs that have been completed. American Heritage Performance offers no form of long-term vehicle storage and/or parts storage to anyone for any reason.

Vehicles not picked up after completion of work without proper and timely notification by the customer will be assesed no less than a $35 per day storage fee.

Parts removed from vehicles not picked up within 48 hours of vehicle leaving the shop and/or being picked up by the customer will be property of American Heritage Performance.

American Heritage Performance is not responsible for any parts not picked up after 48 hours. Any exceptions to the above will need to be in full written form with American Heritage Performance LLC's board members signature present. No other exception will be made for any reason.

Terms & Conditions

Privacy Policy

Your privacy is of great importance to us. By using our services, you are providing limited personal data to us. We only use and retain this personal data provided directly by you or by which it is clear that it has been supplied to us to be processed. Your privacy is of great importance to us, therefore, we process your personal data with the utmost care and in compliance with United States law. We will not provide any personal data to third parties without your permission. This privacy statement was last amended on the 29th of November 2017.