CORE GM WATER PUMP TOP FITTING -20AN LONG LS1/LS2/LS3/LS7 CHEVY

Custom water neck fitting for most LS1, LS2, LS3 LS6, and LS7 style engines. This water neck is machined here in the USA from a solid piece of 6061-T6 aircraft grade billet aluminum. It presses in place of the factory steel push in piece accepts a -20AN fitting. Simply pull out the factory 1.5" barbed fitting and press or weld this unit in place.

The press in fitting is available in a short version as well as -20AN and -16AN sizes. This fitting has a 1.299" base. It will only fit some Genuine GM  pumps and may be too lose for some aftermarket pumps. For aftermarket pumps, we recommend running our CORE-10629 top fitting with a 1.310" base. It will also work with many of the 4.8L, 5.3L, or 6.0L truck water pumps.

OEM GM LS water pump.

CORE Performance products are warranted to be free from defects in material and workmanship for a period of 90 days from the date of purchase. CORE Performance electronic components and products are warranted to be free from defects in material and workmanship for a period of 30 days from the date of purchase. If the any part does not meet the limited warranty criteria an RMA number will have to be initiated to set up an exchange or refund.

The part must be returned to CORE Performance with an RMA number assigned to it, and if it is in acceptable condition, CORE Performance will issue credit directly to the customer. In addition, CORE Performance limited warranty specifically does not apply to products which have been modified or altered in any way, subjected to adverse conditions such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion or faulty repair, or used in racing activities or competitive applications other than those recommended by CORE Performance. This warranty does not warrant and disclaims all liability for products used in racing activities and/or applications, other than those specifically recommended by CORE Performance.