Manley Nissan Patrol 40.5mm Race Master Intake Valves (Set of 12)

If you're rebuilding the top end of your Nissan Patrol engine for serious performance, you'll want to consider these Manley Race Master intake valves. These aren't your average stock replacements; they're built for engines that see a lot of action, especially those running up to 8000 RPM. They're designed to handle the stress of racing applications, whether you're hitting the drag strip, an oval track, or bracket racing.

What sets these valves apart is their construction. They're made from a high-quality stainless steel that's known for holding up well under high temperatures and pressures. The stems are chrome-plated, and the tips are hardened, which adds a significant layer of wear resistance where it counts. You'll also notice the swirl-polished under-head areas and the fully machined faces; these details help improve airflow into the combustion chamber, which can make a difference in how efficiently your engine breathes and performs. Manley offers these in a Race Master straight stem design, which is what you're looking at here, and a Race Flo shape, so you can pick what best suits your engine's specific needs.

This set includes 12 intake valves, enough for a typical V6 or V8 engine. While these are intake valves, Manley also recommends their stainless steel exhaust valves for alcohol-fueled engines, showing their commitment to reliable performance in demanding conditions. If you're building a performance engine, using well-made components like these valves is a smart move to ensure longevity and consistent power.