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Mr. Gasket GM LS Water Neck Swivel - 30 Degree Angle - Polished

Fits 1997-2020 GM Gen III/IV LS Based Engines

PART# 2670NA

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Mr. Gasket Swivel Water Necks are great for engine conversion applications where engine/radiator inlet and outlet ports may be in different locations versus original equipment. The outlet rotates 360 degrees and has a 30 degree angle for versatility. Die-cast aluminum construction is strong, and durably resisting corrosion and is polished for looks. It has a thick mounting flange to prevent warping and provide a positive engine coolant seal. Included stainless steel Allen head cap screws mount flush with the top of the flange to provide a smooth, custom look. Designed for use with 1/2 inch radiator hoses.


  • Neck rotates 360 degrees 30 degree angle for maximum versatility in engine swaps
  • Die-cast aluminum for strength and durability and resist corrosion
  • Thick mounting flange prevents warping and provides a positive coolant seal
  • Polished for looks
  • Allen head stainless steel bolt mount flush to flange for custom look
  • Uses commonly available 1-1/2 radiator hose (casting I.D 1-3/16")


BrandMr. Gasket
Emission Code5
Product TypeWater Outlets
WarrantyLimited 90 Day
Part Number2670NA

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This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Note: Fits 1997-2020 GM LS Engines only, will not fit 2013-up Gen V engines. 1997-2003 & 2009 engines REQUIRE a 2004-2008 style thermostat. Use part number 6367 for 160 degree, or 6368 for 180 degree thermostat.

Warranty Information

Limited 90 Day: See Details


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