The Enginetech V4451 exhaust valve features a 1.590" head diameter, 0.3136" stem (8mm nominal), and 4.914" overall length with a chrome-plated stem. Fits 2007-2018 GM/Chevrolet 6.0L/6.2L applications.
Important Notes
- Sold individually as a single valve. Order the quantity required for your engine configuration (typically one per cylinder per valve position).
- Chrome-plated stem provides a hard, low-friction wear surface for extended service life.
- Always verify head diameter, stem diameter, overall valve length, and groove count against the OE valve being replaced before installation - valve dimensions vary across engine families and a visual match alone is not sufficient.
Specifications
| Part Number | V4451 |
| Valve Type | Exhaust Valve |
| Head Diameter | 1.590" |
| Stem Diameter | 0.3136" (8mm nominal) |
| Valve Length | 4.914" OAL |
| Stem Finish | Chrome Stem |
| Number of Grooves | 1 |
| Weight | 0.125 lbs |
| OEM Cross-Refs | Elgin: E5215, Fed. Mogul: V4741, General Motors: 12582719, SBI: 13042 |
Vehicle Fitment
2008-2017 GM 6.0L / 364 OHV V8 16V LS Series Vortec GM 4.000" Bore; 2008-2015 GM 6.2L / 376 OHV V8 16V LS Series Vortec Naturally Asp. 4.065" Bore; 2007-2018 GM/Chevrolet 6.0L / 364 OHV V8 16V LS Series Vortec GM 4.000" Bore; 2007-2014 GM/Chevrolet 6.2L / 376 OHV V8 16V LS Series Vortec Natural Asp. 4.065" Bore.
Product Video
Watch the Enginetech exhaust valve overview: https://youtu.be/G487Dw8HtII
Watch the Enginetech exhaust valve overview: https://youtu.be/eLaQHop7rH8
Enginetech standard valves are stock-replacement engine valves produced from OE grade materials or better, engineered with the production engine rebuilder in mind. Face runout, stem finish, and stem diameter tolerances are held to some of the tightest standards in the internal engine parts industry, and every valve is inspected by on-site engineers against a documented quality plan before it leaves the plant. The line covers domestic, import, and common high-performance applications across a full range of head diameters, stem diameters, and overall lengths, with chrome-plated and nitride-hardened stem finishes available where the engine's operating conditions call for the upgrade. Always verify head diameter, stem diameter, valve length, groove count, and any oversize stem requirement against the original valve being replaced before installing, as multiple valve configurations can share the same vehicle nameplate.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
