Mercury 8M0142290 | Oil Cap Assembly for V6, V8 & V10 OutboardsGenuine replacement Mercury Oil Cap Assembly 8M0142290 for 3.4L V6, 4.6L V8 and 5.7L V10 outboards.175-225hp 3.4L V6 Fourstroke (2B529482 & up)200-300 4.6L V8 FourStroke(2B529482 & up)350-400 5.7L V10 FourStroke (3B266064 & Up)150R-500R 3.4L V6 , 4.6L V8,350/400/425 5.7L V10 Verado (Serial 3B266064-UP)Key Product Features Fits the following Mercury outboards: 175-225hp 3.4L V6 FourStroke (2B529482 & up), 200-300 4.6L V8 FourStroke (2B529482 & up)and 350-425 5.7L V10 FourStroke (3B266064 & up).; Also fits Mercury Racing 3.4L V6, 4.6L V8 and 5.7L V10 150R-500R outboards; Contains cap with O-Ring installed; Cap is made of a polyamide resin; Material tested for durability and longevity in tough marine environments; Mercury parts and accessories are backed by decades of experience in engineering, testing and manufacturing to provide the best fit, function and performance;