The Enginetech EM4407 exhaust valve features a 1.181" head diameter, 0.2146" stem (5.5mm nominal), and 4.499" overall length with a nitride-hardened stem. Fits 2000-2022 Acura/Honda/Saturn 3.0L/3.2L/3.5L/3.7L applications.
Important Notes
- Sold individually as a single valve. Order the quantity required for your engine configuration (typically one per cylinder per valve position).
- Nitride-hardened stem surface resists wear and galling in high-temperature and high-load applications.
- 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 | EM4407 |
| Valve Type | Exhaust Valve |
| Head Diameter | 1.181" |
| Stem Diameter | 0.2146" (5.5mm nominal) |
| Valve Length | 4.499" OAL |
| Stem Finish | Nitrided Stem |
| Number of Grooves | 1 |
| Weight | 0.25 lbs |
| OEM Cross-Refs | Acura: 14721P8EA00, DNJ Rock: EV263, DNJ Rock: EV287, Elgin: E5123, Fed. Mogul: V4688, General Motors: 12582198 |
Vehicle Fitment
- 2000-2003 Acura 3.2L / 3210 SOHC V6 24V J32A1 89.00mm Bore
- 2001-2003 Acura 3.2L / 3210 SOHC V6 24V J32A2 89.00mm Bore
- 2004-2008 Acura 3.2L / 3210 SOHC V6 24V J32A3 89.00mm Bore
- 2005-2008 Acura 3.5L / 3471 SOHC V6 24V J35A8 89.00mm Bore
- 2009-2014 Acura 3.5L / 3471 SOHC V6 24V J35Z6 89.00mm Bore
- 2014-2020 Acura 3.5L / 3471 SOHC V6 24V J35Y4, J35Y6 89.00mm Bore
- 2009-2014 Acura 3.7L / 3664 SOHC V6 24V J37A4 90.00mm Bore
- 2003-2005 Honda 3.0L / 2997 SOHC V6 24V J30A4 86.00mm Bore
- 2006-2007 Honda 3.0L / 2997 SOHC V6 24V J30A5 86.00mm Bore
- 2008-2012 Honda 3.5L / 3471 SOHC V6 24V J35Z2 89.00mm Bore
- 2008-2012 Honda 3.5L / 3471 SOHC V6 24V J35Z3 89.00mm Bore
- 2013-2017 Honda 3.5L / 3471 SOHC V6 24V J35Y1 89.00mm Bore
- 2017-2020 Acura 3.0L / 2997 SOHC V6 24V JNA2 Diesel 86.00mm Bore
- 2001-2002 Acura 3.5L / 3471 SOHC V6 24V J35A3 89.00mm Bore
- 2003-2006 Acura 3.5L / 3471 SOHC V6 24V J35A5 89.00mm Bore
- 2013-2018 Acura 3.5L / 3471 SOHC V6 24V J35Z2 89.00mm Bore
- 2014-2022 Acura 3.5L / 3471 SOHC V6 24V J35Y5 89.00mm Bore
- 2007-2013 Acura 3.7L / 3664 SOHC V6 24V J37A1 90.00mm Bore
- 2010-2013 Acura 3.7L / 3664 SOHC V6 24V J37A5 90.00mm Bore
- 2002-2022 Honda 3.5L / 3471 SOHC V6 24V J35A4 89.00mm Bore
- ...and 10 additional applications
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.
