Cobra Tek- CBK-HZ-6145-POL- Fits Chevy LS 45 Degree Swivel Water Neck Thermostat housing Polished Aluminum Finish, Fits Following Engines: 294, 427, 364, 294, 325, 262, 350, 325, 364, 376.

"Cobra Tek- CBK-HZ-6145-POL- Fits Chevy LS 45 Degree Swivel Water Neck Thermostat housing Polished Aluminum Finish, Fits Following Engines: 294, 427, 364, 294, 325, 262, 350, 325, 364, 376. ALUMINUM CHEVY LS 45 DEGREE SWIVEL WATER NECK POLISHED Details Meets or exceeds all original equipment specifications Unsurpassed quality for you can trust Validated for fit, form and function Designed for repair and everyday environment Fits Following Engines: 294 CID GM (LS) Small Block Generation III Fits Following Engines: 427 CID GM (LS) Small Block Generation IV Fits Following Engines: 364 CID GM (LS) Small Block Generation III Fits Following Engines: 294 CID GM (LS) Small Block Generation IV Fits Following Engines: 325 CID GM (LS) Small Block Generation V Fits Following Engines: 262 CID GM (LS) Small Block Generation V Fits Following Engines: 350 CID GM (LS) Small Block Generation III Fits Following Engines: 325 CID GM (LS) Small Block Generation III Fits Following Engines: 364 CID GM (LS) Small Block Generation IV Fits Following Engines: 376 CID GM (LS) Small Block Generation IV "