Brand: CSR Performance Manufacturer's Part Number: CSR 914C Part Type: Water Necks and Thermostat Housings Product Line: CSR Intake Manifold Water Filler Necks Summit Racing Part Number: CSI-914C UPC: 816905003547 Water Neck Style: 90 degree Swivel: Yes Material: Aluminum Color: Clear Coating Type: Anodized Sealing Style: O-ring Thermostat Included: No Mounting Hardware Included: Yes Heater Bypass Provision: No Quantity: Sold individually. Notes: Radiator hose inlet size is 1.50 in. Includes a filler neck top with a provision for radiator cap. No overflow fitting is included. CSR Intake Manifold Water Filler Necks Mount one of these CSR water necks on your manifold， and you'll have an easy way to top-off your cooling system and still have a provision for overflow. Precision-machined from lightweight 6061-T6 billet aluminum， they'll bolt right onto your manifold or an existing 2 in. spacer. Each of these necks comes with stainless steel hardware; a cap is not included.