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Kooks Headers & Exhaust Warranty INFORMATION

Kooks Headers & Exhaust offers a limited lifetime warranty, covering material and workmanship, to the original purchaser for the original vehicle on which the product was installed. Kooks products installed on competition applications or made with mild steel will carry a 1-year limited warranty also covering material and workmanship. Discontinued/Obsolete Parts will not be covered, but can be sent in for an estimate on repair.

This warranty shall apply only if Kooks identifies a material or workmanship defect on the examined product, at which time Kooks will repair or replace the product. Kooks is not responsible for any loss, inconvenience, or damage including, but not limited to, installation or removal costs, shop fees, or other expenses.

Kooks Warranty Registration must be completed upon receipt of the product to receive warranty coverage. Failure to file Warranty Registration will void Kooks warranty terms. Kooks will not warranty any products that have been damaged due to collision, mis-use, improper installation, removal, or modification, i.e. cut, welded, wrapped, etc. Ceramic coating does not void this warranty, however the coating is not covered.

Claimed defective products may only be returned to Kooks with a Returned Merchandise Authorization (RMA) number and will be shipped at the buyer’s expense, unless otherwise stated by a Kooks representative. Kooks is not liable for products damaged in transit during the RMA process. Returns and/or warranty claims will not be considered without a copy of your sales receipt. Kooks reserves the right to refuse a return and/or warranty claim if any of the above criteria are not met. The returned product will need to include your name, address, daytime phone number, RMA number, and a copy of your sales receipt.

Kooks does not guarantee any specific sound or performance gains after the installation of our products. Due to a variety of factors, Kooks strongly recommends that all customer vehicles are Dyno tuned after the installation of our long-tube header systems. If you have any questions, please contact us at tech@kooksheaders.com.

Kooks Mufflers

Kooks Headers & Exhaust Mufflers come with a 1-year limited replacement warranty. The muffler in question would need to be assigned an RMA number and will be subject to the same warranty policy outlined above. If Kooks determines that the failure was caused by impact damage, the claim will be denied. If Kooks determines that there was a manufacturing defect, the muffler will be repaired or replaced and shipped back to the customer at no charge. If Kooks finds neither impact damage or manufacturing defects on the muffler in question, we can offer a replacement muffler at a discounted rate.

Catalytic Converters

Standard high-flow race cats are meant only for use on naturally aspirated vehicles. Any application with forced induction must have Green cats to be eligible for Kooks warranty terms. Furthermore, we strongly recommend upgrading to our Green cats if the vehicle will be producing more than 550 RWHP.

Kooks Headers & Exhaust Green Cats (EPA Certified) come with a 2-year/ 50k mile limited warranty, while our standard high-flow race cats come with a 1-year limited replacement warranty. The catalytic converter in question must be returned for inspection following the RMA procedure outlined above. If Kooks determines there was a manufacturing defect, the part will be replaced and shipped back to the customer at no cost. If Kooks determines the failure was not related to a manufacturing defect, we can offer a replacement catalytic converter at a discounted rate.

Unauthorized Vendors

Kooks products purchased through any unauthorized vendors (including but not limited to Amazon, Ebay, etc.) will not be eligible for return or warranty claims.


Warranty Registration

Please either upload a photo of your label or manually input the Work Order Number found here on the label

Warning / California (Proposition 65)

Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm. These chemicals can be in the products that Californians purchase, in their homes or workplaces, or that are released into the environment. By requiring that this information be provided, Proposition 65 enables Californians to make informed decisions about their exposures to these chemicals. 

Proposition 65 also prohibits California businesses from knowingly discharging significant amounts of listed chemicals into sources of drinking water. 

Proposition 65 requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm. This list, which must be updated at least once a year, has grown to include approximately 900 chemicals since it was first published in 1987.

For more information, please visit www.p65warnings.ca.gov.

Warning / California (CARB)

California laws prohibit the use of any aftermarket exhaust part or system that modifies, removes or replaces original equipment catalysts unless the California Air Resources Board has issued an Executive Order regarding such part or system or unless the part or system is exempted by being used only on racing vehicles on closed courses. Neither Kooks Headers and Exhaust nor any of their subsidiaries make any representation that any of their parts or systems has received such an Executive Order or that any of their parts or systems conform with the racing vehicles exemption. The purchasers are entirely responsible for informing themselves of applicable California laws and to comply with those laws.

Unauthorized Vendors

Kooks products purchased through any unauthorized vendor (including but not limited to): Amazon and Maryland Speed will not be warrantied by Kooks. Likewise, returns from any unauthorized vendor will not be accepted by Kooks.

Continue With Jet-Hot

Products that receive jet hot coating are not eligible for exchange or return and excluded from additional discounts. Would you like to continue with your purchase?