-16AN & -20AN Water Neck Adapters

Name: AutoPlumb -16AN & -20AN Water Neck Adapters - -16AN & -20AN Water Neck Adapters
Brand: AutoPlumb
SKU: 52799666651349
Price: 69.95 USD
Availability: InStock
Rating: 4.9029 (77 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$69.95

Quantity

Color

Black

Quantity

Description

No Welding - No Clamps required. Easily go from one water-neck size to another without the need of reducers, splices or clamps while maintaining the same hose size. Perfect for LS swaps when the pump is one size and the radiator is anoth...

Reviews

4.9

103 ratings

Super impressed by the quality and ease of installation. This is a really smart way to adapt a cooler or radiator if you want to use AN fittings but can't weld on bungs.

Mike · 2 days ago

1.5" to -16AN conversion.

Fit and finish of the 1.5" to -16 AN radiator fitting is outstanding. Leak free seal that is surprisingly sturdy. The hoses do not move after the connection. My hoses are 14" from the radiator connection to the water pump. Very little deflection mid hose. I definitely recommend these fittings.

Jeff · July 24, 2026

It works!!!!!!

So far everything is lining up very well and the A&N fitting is snug. Need to order three more than I will be completely done. Thank you for this amazing invention.

Anonymous · July 13, 2026

Delivery & Returns

Returns accepted within 120 days

AutoPlumb

4.9 (560)

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