Fits for: Chevy 283 302 305 327 350 400 396 427 454 502 SBC and BBC engines. Features: Material: Stainless Steel, Aluminum. Type:8455 Water Neck Finish: Chrome Plated. Color: Silver Sealing Style: O-Ring Features: Superior Material Made of high quality aluminum alloy and chrome plated material to ensure good performance of the water neck. Sealing Type 45° swivel polished water neck with O-ring for better sealing. Complete Accessories Comes with with 2 stainless steel Allen bolts and an O-ring. All tested before shipping All products have been tested for performance and to ensure the accurate parameter for your vehicle. Package includes: 1 x Polished Aluminum Water Neck