Allstar Performance Thermostats, Housings & Fillers

Water Neck, Aluminum, Polished, O-Ring, 15 Degree, Chevy, Big/Small Block/V6, Each

Part Number: AAF-ALL30173

4.66 out of 5 stars ( 41 )

Estimated Ship Date: Today

Water Neck, 90 Degrees, Swivel Style, O-ring Seal, 1.5 in. Outlet, with Hardware, Aluminum, Black Powdercoated, Matte Finish, Chevy, Gen I, Each

Part Number: AAF-ALL30270

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Water Necks and Thermostat Housings, 75 Degree, Swivel Style, Aluminum, Black Powdercoated, Matte Finish, O-ring Seal, with Hardware, Each

Part Number: AAF-ALL30273

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Water Neck Spacer, Billet Aluminum, Black Anodized, 1.00 in. Thick, Chevy V8, Each

Part Number: AAF-ALL30375

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

Water Necks and Thermostat Housings, Allstar Performance Aluminum Water Necks, 45 degree, Swivel, Aluminum, O-ring, Each

Part Number: AAF-ALL30271

Not Yet Reviewed

Estimated Ship Date: Today

O-Ring Water Neck 16AN

Part Number: AAF-ALL30376

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• Special Order

Water Neck, Chevy, Straight, Aluminum, Black Powdercoated, -20 AN Outlet Size, Chevrolet, Each

Part Number: AAF-ALL30377

Not Yet Reviewed

Estimated Ship Date: Dec 26, 2025 if ordered today

• Special Order