1966 Thermostats, Housings & Fillers

Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Satin Black Anodized, -20 AN Outlet, Chrysler, Dodge, Plymouth, Small Block, Each

Part Number: MCH-BTH-410-08

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Clear, Polished, -20 AN Outlet Size, Pontiac, Pontiac V8, Each

Part Number: MCH-BTH-106

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Clear, Polished, -20 AN Outlet Size, Ford, 289/302/351 Small Block Windsor, Each

Part Number: MCH-BTH-306

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Allstar Performance billet aluminum water necks fit most Chevy V8, accept most standard thermostats and swivel

Part Number: AAF-ALL30370

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Allstar Performance billet aluminum water necks fit most Chevy V8, accept most standard thermostats and swivel

Part Number: AAF-ALL30371

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Thermostat Housing, Aluminum, Blue Anodized, Swivel, 90 Degree, 1 1/4 in. Outlet, Chevy, Each

Part Number: PGP-PRP-6420

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Water Neck, Billet Aluminum, Blue, 90 Degree, -16 AN, Swivel, Chevy, Each

Part Number: SUM-371111-BL

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Estimated Ship Date: Jan 7, 2026 if ordered today

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Water Neck, Billet Aluminum, Red, 90 Degree, -16 AN, Swivel, Chevy, Each

Part Number: SUM-371111-RE

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Estimated Ship Date: Jan 7, 2026 if ordered today

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Thermostat Housing, Aluminum, Red Anodized, Swivel, 90 Degree, 1 1/4 in. Outlet, Chevy, Each

Part Number: PGP-PRP-6270

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Clear, Polished, -16 AN Outlet Size, Pontiac, Pontiac V8, Each

Part Number: MCH-BTH-105

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Satin Black Anodized, -16 AN Outlet Size, Pontiac, Pontiac V8, Each

Part Number: MCH-BTH-105-08

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Clear, Polished, -20 AN Outlet Size, Chevrolet, Small/Big Block, Each

Part Number: MCH-BTH-206

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Thermostat Housing, Aluminum, Red Anodized, Swivel, 90 Degree, -12 AN Outlet, Chevy, Each

Part Number: PGP-PRP-6273

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Water Neck, Zinc Alloy, Chrome Plated, Straight Up, O-Ring, Chevy, Big/Small Block, Each

Part Number: TRD-9647

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Estimated Ship Date: Jan 28, 2026 if ordered today

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Water Neck Spacer, Billet Aluminum, Black Anodized, Chevy, 1.500 in. Thick, Two 3/8 in. NPT Female Holes, Each

Part Number: KRS-KRC15375150

3.33 out of 5 stars ( 3 )

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Water Neck, Zinc Alloy, Orange Powdercoated, O-Ring, 45 Degree, Chevy, Big/Small Block, Each

Part Number: TRD-9928

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Block Off Plate, Water Neck, Manifold, Chevy/Mopar, Big Block, Chrome, Each

Part Number: MEZ-WN0007C

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Neck Spacer, Billet Aluminum, Clear Anodized, 1 in. Thick, Chevy, Chrysler, Dodge, Plymouth, Each

Part Number: MEZ-WN0028C

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Neck, Billet Aluminum, Chrome, -16AN Male, Straight Up, Chevy, Mopar, Big Block, Each

Part Number: MEZ-WN0916C

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Neck Plate, Billet Aluminum, Red Anodized, Straight Up, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0916R

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Polished, -16 AN Outlet Size, Ford, 390/406/427/428 Big Block FE, Each

Part Number: MCH-BTH-325-05

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Clear, Polished, -16 AN Outlet Size, Chrysler, Dodge, Plymouth, Small Block, Each

Part Number: MCH-BTH-409

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Satin Black Anodized, -16 AN Outlet Size, Ford, 390/406/427/428 Big Block FE, Each

Part Number: MCH-BTH-325-08

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Water Neck Base, Chrome, Mopar, Big Block, Each

Part Number: MEZ-WN0029C

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Thermostat Housing

Part Number: MEZ-WN0030C

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Estimated Ship Date: Nov 17, 2025 if ordered today

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