1966 Thermostats, Housings & Fillers

Water Necks and Thermostat Housings, Stock Style, Steel, Natural, Heater Bypass Provision, Ford, Each

Part Number: RNB-902-1042

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

Thermostat, Failsafe, High-flow, 160 degrees, Copper/Stainless Steel, Buick, Cadillac, Chevy, Olds, Pontiac

Part Number: WSN-557160

Not Yet Reviewed

Estimated Ship Date: Dec 26, 2025 if ordered today

Water Necks and Thermostat Housings, 90 degree, Swivel, Aluminum, Polished, 1.500 in. Outlet Size, Chrysler, Dodge, Plymouth, Big Block, Each

Part Number: MCH-BTH-412-05

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Water Neck, Aluminum, Black Powdercoated, 45 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6252

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/17/2025

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

Part Number: MCH-BTH-206-05

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

Water Neck, Billet Aluminum, 90 Degree, Swivel, -20 AN, Chevy, Each

Part Number: PFF-10-2120

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Free Shipping
• Special Order

Water Neck, Cast Aluminum, Copper Plated, O-Ring, 45-Degree, Chevy, Big/Small Block, Each

Part Number: SUM-371100CPR

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

Water Neck, Replacement, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: FSS-84841

2.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/17/2025

Water Neck, Billet Aluminum, Polished, 90 Degree, Pontiac, Each

Part Number: CTR-80-051

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

High Flow Thermostat-180 Degrees

Part Number: SNN-2006-180

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

Water Necks and Thermostat Housings, 90 degree, Swivel, Aluminum, Satin Black Anodized, 1.500 in. Outlet Size, Pontiac, Pontiac V8, Each

Part Number: MCH-BTH-102-08

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Water Neck, Aluminum, Black Ceramic, 75 Degree, Chevy, Big/Small Block, Each

Part Number: WND-6255

1.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/17/2025

Water Neck, 90 degree, Billet Aluminum, Clear Anodized, Chrysler, Dodge, Plymouth, Each

Part Number: CVS-TSH9ACL

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Water Neck, Steel, Chrome, Straight Up, Chrysler, Dodge, Plymouth, Big/Small, Each

Part Number: MIL-65730

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/17/2025

Water Neck Spacer, Billet Aluminum, Black Anodized, Chevy, 1.000 in. Thick, Two 3/8 in. NPT Female Holes, Each

Part Number: KRS-KRC15375000

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Monday 11/17/2025

Water Neck, Billet Aluminum, Black Anodized, O-Ring, 90 Degree, 16 AN, Chevy, Big/Small Block/V6, Each

Part Number: CVS-TSH6ABK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

• Drop Ship
• Special Order

Water Neck, Offset Adapter Style, Billet Aluminum, Polished, Chevy, Each

Part Number: CHH-3300-001P

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Water Neck, Aluminum, Chrome Plated, O-Ring, 45 Degree, Chevy, Small Block, Each

Part Number: PRO-66209

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

Water Neck, Aluminum, Black Anodized, O-Ring, 75 Degree, 1.250 in. Outlet, With Filler Neck for Radiator Cap, Chevy, Small/Big Block, Each

Part Number: HSE-4910-383-202

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Thermostat, 195 Degree, High-Flow, Copper/Steel, Each

Part Number: EMP-309

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/17/2025

Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Clear, Polished, -16 AN Outlet Size, Chevrolet, Small/Big Block, Each

Part Number: MCH-BTH-205

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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

Part Number: PGP-PRP-6423

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

• Drop Ship
• Special Order

Water Neck, Low-Profile, 90 degree, Aluminum, Black Anodized, -16 AN Outlet Size, Chevrolet, Each

Part Number: AAF-ALL30380

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Free Shipping
• Special Order

Water Neck, Swivel, 90 degree, Billet Aluminum, Black, O-ring Sealing Style, Ford, Small Block Windsor, Each

Part Number: CSI-9110AN16BLK

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: PGP-PRP-6570

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Special Order