-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: 4.8772 (86 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$69.95

Quantity

Color

Black

Quantity

No welding or clamps required for installation, simplifying the process and reducing risk of leaks
Compatible with any water neck radiator, water pump, or thermostat housing for versatile use
Leak-proof and guaranteed against mechanical failure for reliable performance
Removable and reusable design for long-term cost savings and convenience
Patented construction ensures compatibility with both metal and plastic water necks

Summarized by Shop

4.9

114 ratings

Impressed with product, instructions, and ease of installation. Had to make call to company before purchase and the person was professional, knowledgeable, and polite. I recommend this product.

Mark · August 22, 2026

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 · August 1, 2026

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

Returns accepted within 120 days

Exclusions may apply. See full policy

AutoPlumb

4.9 (597)

Product description loading

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No welding or clamps required for installation, simplifying the process and reducing risk of leaks
Compatible with any water neck radiator, water pump, or thermostat housing for versatile use
Leak-proof and guaranteed against mechanical failure for reliable performance
Removable and reusable design for long-term cost savings and convenience
Patented construction ensures compatibility with both metal and plastic water necks

Summarized by Shop

4.9

114 ratings

Impressed with product, instructions, and ease of installation. Had to make call to company before purchase and the person was professional, knowledgeable, and polite. I recommend this product.

Mark · August 22, 2026

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 · August 1, 2026

1.5" to -16AN conversion.

Jeff · July 24, 2026

Returns accepted within 120 days

Exclusions may apply. See full policy

AutoPlumb

4.9 (597)

-16AN & -20AN Water Neck Adapters

Highlights

Description

Specifications

Reviews4.9(114)

Delivery & Returns

AutoPlumb

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