Summit Racing Thermostats, Housings & Fillers

Water Neck, Cast Aluminum, Polished, O-Ring, 90-Degree, Chevy, Big/Small Block, Each

Part Number: SUM-371101

4.58 out of 5 stars ( 53 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 160 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Chevy, Pontiac, GMC, LS, Each

Part Number: SUM-365-160

4.24 out of 5 stars ( 38 )

Estimated Ship Date: Tuesday 9/2/2025

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

Part Number: SUM-371100

4.52 out of 5 stars ( 98 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 180 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Chrysler, Dodge, Jeep, Hemi, Each

Part Number: SUM-362-180

4.14 out of 5 stars ( 36 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 160 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Housing, Chevy, Pontiac, Each

Part Number: SUM-363-160

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Thermostat Housing, Cast Aluminum, Polished, 60 Degree, Swivel, Chevrolet, LS, Each

Part Number: SUM-370998

3.82 out of 5 stars ( 11 )

Estimated Ship Date: Tuesday 9/2/2025

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

Part Number: SUM-371100B

4.06 out of 5 stars ( 18 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 160 Degree, Copper/Brass, Stainless Body, Chevy, GMC, Cadillac, LS, V8, V6, Each

Part Number: SUM-366-160

4.27 out of 5 stars ( 11 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Cast Aluminum, Black Powdercoated, O-Ring, 90-Degree, Chevy, Big/Small Block, Each

Part Number: SUM-371101B

3.33 out of 5 stars ( 6 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Cast Aluminum, Polished, O-Ring, 75 Degree, Chevy, Big/Small Block, Each

Part Number: SUM-371101-15

2.6 out of 5 stars ( 5 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 187 Degree, WithThermostat Housing, Copper/Brass, Stainless Body, GM, Each

Part Number: SUM-367-187

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

Radiator Hose Filler, Inline, Aluminum, Natural, 1.5 in./1.5 in., Each

Part Number: SME-2202

4.53 out of 5 stars ( 17 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck Spacers, Aluminum, Polished, 1.00 in. Thickness, Chevrolet, Each

Part Number: SUM-371200

2.5 out of 5 stars ( 4 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Thermostat Housing, Cast Aluminum, Black, 60 Degree, Swivel, Chevrolet, LS, Each

Part Number: SUM-370998B

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 180 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Housing, Chevy, Pontiac, Each

Part Number: SUM-363-180

3.67 out of 5 stars ( 9 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Cast Aluminum, Black Powdercoated, O-Ring, 15-Degree, Chevy, Big/Small Block, Each

Part Number: SUM-371102B

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, O-ring, Steel, Chrome, 45 degree, Ford, Small Block Windsor, Each

Part Number: SUM-G3805-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Cast Steel, Zinc Alloy, Chrome Plated, Straight, Chevy, Big/Small Block, Each

Part Number: SUM-G3803

4.93 out of 5 stars ( 14 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Steel, Chrome Plated, 45 Degree, Oldsmobile, V8, Each

Part Number: SUM-376003

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 160 Degree, Bypass Valve, Copper/Brass, GM, Each

Part Number: SUM-367-160

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Aluminum, Chrome Plated, Swivel, 60 Degree, Chevrolet, LS, Each

Part Number: SUM-370995

3.67 out of 5 stars ( 12 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck, Thermostat Housing, Cast Aluminum, Polished, Straight, Chevrolet, LS, Each

Part Number: SUM-370997

1.57 out of 5 stars ( 7 )

Estimated Ship Date: Tuesday 9/2/2025

Water Neck Spacers, Aluminum, Black Anodized, 1.00 in. Thickness, Chevrolet, Each

Part Number: SUM-371201

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 9/2/2025

Thermostat, 160 Degree, Copper/Brass, Mopar, Each

Part Number: SUM-368-160

2.17 out of 5 stars ( 6 )

Estimated Ship Date: Tuesday 9/2/2025

Radiator Hose Filler, Inline, Aluminum, Black, 1.5 in./1.5 in., Each

Part Number: SME-2202-11

3.0 out of 5 stars ( 5 )

Estimated Ship Date: Tuesday 9/2/2025