Description

AUTOLITE COPPER CORE SPARK PLUGS

SET OF 8

PART # 3923

* ABOVE PHOTO IS A FILE PHOTO. YOU WILL RECEIVE 8 OF PART #

AUTOLITE 3923

These are the spark plugs we strongly recommend for our NKB and Procomp heads. They can also be used for many other cylinder heads that require a plug of this thread depth. We have dyno proven this plug style and temp range to be perfect for use with our heads year round. These are especially recommended for warmer weather. Those running in very cold climates may want to step up one heat range. We did at one time run the hotter (5224) plug, but noticed detonation coming in under load on the dyno when the timing was set to its optimal position. Rather than back down on the timing, as this would reduce performance, we tried a set of these and the detonation went away. This plug is now used in most all of our engines and never have we noticed any fouling or issues with them. For those wanting a possibly better grade of spark plug, we offer the NGK high performance plugs also. See our other listings.

Electrode Tip Material:	Resistor
Manufacturer Heat Range:	D11
Resistor:	Suppressor
Spark Plug Reach:	3/4 in
Spark Plug Seat Type:	Gasket
Spark Plug Thread Size:	14 mm
Tip Configuration:	Power
Wrench Diameter:	5/8 in

Quantity: Sold as a set of 8

Reach (in): .750

Manufacturer heat range: 3

Below is a file photo. You will rec. a full set of 8 part number 3923

Very Important Note!

Our sales staff has limited technical knowledge on this product and are usually unable to answer many of the questions asked. We do not have any variations of this product other than what our listings show.

We are not responsible for collateral damage caused by the use of this product.

RETURN POLICY

Should a problem occur, please contact us. If a return is necessary, please contact us for an RGA number and return authorization. The RGA number must be included on the return label. If an item is returned without an RGA number, it will not be processed. A full description of what the problem is needs to be included with any returned product with your contact info, and proof of purchase. Even though you may have explained the problem to us, and been granted permission to return the product, we must have a written explanation and a contact number included with the product. It is also recommended that you include the name of the person from our company that you have been in contact with. You must send the item back to us in a trackable manner (USPS Priority Mail, FedEx, etc.) and keep the tracking info of the returned product. Please give ample time for returns to be processed. Following these guidelines will make the return process work as it should.

PAYMENT AND SHIPPING DETAILS.

We offer great discounts on shipping. You only pay the full shipping fee on the highest shipping cost of your items, and HALF PRICE shipping on all additional items. Few offer discounts on shipping such as this. Our checkout system will automatically calculate your shipping discount at the time of final payment, providing you consolidate your payment.

You may receive a verification and tracking number shortly after purchase, but this does not necessarily mean that your product has shipped. It would be fair to say that 98% of products will be going out the day the shipping label is issued. On occasion, the product may not ship out until the next day after the label has been issued. Most products purchased late in the day will not be shipped until the next day.

If you checkout and start over, the auto calculator will not recognize the multiple purchases, and there will be no shipping discount.