Thermostat Housings, Filler Necks & Water Restrictors

There are a number of thermostat housings and water necks to help you locate your radiator hose in the right direction or dress-up the top of your engine. JEGS offers several straight, swivel, 90 degree and angled water necks in chrome, billet aluminum and other materials! Get the thermostat housing to fit your needs!

Featured JEGS Brand Thermostat Housings and Filler Necks

JEGS Aluminum Thermostat Housing
$17.09
(8)

JEGS Aluminum Thermostat Housing
$17.09
(5)

JEGS LS Thermostat Housing Black (Hard Anodized)
$35.09
(1)

JEGS Intake Manifold Fill Neck Kit Clear Anodize
$64.94
Individual Products Product Groups
Cooling, AC & Heating Thermostat Housings, Filler Necks & Water Restrictors

Spectre LS 160° Thermostat And Housing Kit Includes: LS Swivel Thermostat Housing
LS 160° Thermostat And Housing Kit
Includes:
  • LS Swivel Thermostat Housing
  • 160° Low-Temp Thermostat
    View Details
    • $43.94
    Estimated to ship directly from the manufacturer on 08/27/18
    Lowest Price Guarantee

    Spectre LS 160° Thermostat And Housing Kit Includes: LS Straight Thermostat Housing
    LS 160° Thermostat And Housing Kit
    Includes:
  • LS Straight Thermostat Housing
  • 160° Low-Temp Thermostat
    View Details
    • $43.94
    Estimated to ship directly from the manufacturer on 08/27/18
    Lowest Price Guarantee

    JEGS Aluminum Thermostat Housing
    Aluminum Thermostat Housing
  • Small Block Chevy
  • Big Block Chevy
  • 1-1/2" Hose
  • O-Ring Seal
  • 45° Swivel
  • Polished
    Includes:
  • Hardware
    View Details
    • $17.09
    Ships Monday
    Lowest Price Guarantee
    (8)

    JEGS Aluminum Thermostat Housing
    Aluminum Thermostat Housing
  • Small Block Chevy
  • Big Block Chevy
  • 1-1/2" Hose
  • O-Ring Seal
  • 90° Swivel
  • Polished
    Includes:
  • Hardware
    View Details
    • $17.09
    Ships Monday
    Lowest Price Guarantee
    (5)

    JEGS Water Restrictor Discs
    Water Restrictor Discs
  • Made in the USA
    Includes:
  • (1) 5/8" ID (Gold) Restrictor
  • (1) 3/4" ID (Blue) Restrictor
  • (1) 1" ID (Red) Restrictor
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    • $5.39
    Ships Monday
    Lowest Price Guarantee
    (2)

    JEGS Inline Radiator Hose Fill Neck 1-1/2"
    Inline Radiator Hose Fill Neck
  • 1-1/2"
  • Includes 1/8" NPT x 5/16" Hose Overflow Fitting
  • Made in the USA
    View Details
    • $22.49
    Estimated to ship on 10/05/18
    Lowest Price Guarantee
    (5)

    JEGS Aluminum Thermostat Housing
    Aluminum Thermostat Housing
  • Small Block Chevy
  • Big Block Chevy
  • 1-1/2" Hose
  • O-Ring Seal
  • 45° Swivel
  • Black
    Includes:
  • Hardware
    View Details
    • $17.09
    Ships Monday
    Lowest Price Guarantee
    (4)

    JEGS Aluminum Thermostat Housing
    Aluminum Thermostat Housing
  • Small Block Chevy
  • Big Block Chevy
  • 1-1/2" Hose
  • O-Ring Seal
  • 15° Swivel
  • Polished
    Includes:
  • Hardware
    View Details
    • $17.09
    Ships Monday
    Lowest Price Guarantee
    (8)

    Proform Mopar Chrome Water Neck Fits all Mopars 1978 and Earlier
    Mopar Chrome Water Neck
  • Fits all Mopars 1978 and Earlier
  • Fits Small/Big Block Chevy (Must use Mopar Thermostat)
  • Straight
    View Details
    • $11.99
    Ships Monday
    Lowest Price Guarantee

    Spectre Thermostat Housing Fits 1997-Later LS Engines
    Thermostat Housing
  • Fits 1997-Later LS Engines
  • 30° Swivel Neck
  • Fits 1.27" ID Radiator Hose
  • Polished Aluminum
  • Bolts Included
    View Details
    • $19.99
    Ships Monday
    Lowest Price Guarantee