Royal Enfield 574145/D Exhaust Valve – OEM Exhaust Valve for Himalayan & Scram 411 (BS4–BS6)

Ensure engine integrity and optimal exhaust clearance with the Royal Enfield 574145/D Exhaust Valve. Built to OEM specifications for the Himalayan 411cc and Scram 411 (Euro IV–V) platforms, this valve delivers precise fit and combustion seal performance.

Crafted from hardened steel with accurate stem diameter and seal seat finish, it replaces worn, burnt, or bent exhaust valves to restore engine power and prevent compression loss. Designed for exact OEM valve guide tolerances, it bolts into place without machining. Best installed with new valve stem seals and abide by OEM torque specs. Ships with fast delivery and customer support from Underthehood.co.in.

✔️ Key Features & Benefits

• ✅ Genuine OEM Part 574145/D—used in factory builds of Himalayan 411 and Scram 411.

• ✅ Built to Royal Enfield valve spec for sealing, hardness, and compatibility.

• ✅ Direct-fit replacement—no custom grinding or machining needed.

• ✅ Restores compression and combustion efficiency.

• ✅ Ideal when removing head or diagnosing misfire, blue smoke, or lost power.

📋 Compatibility Table

📦 Technical Specifications

• Part Number: 574145/D (Exhaust Valve)

• Material: Hardened alloy steel per OEM spec

• Application: Exhaust valve for 411cc engines

• Qty: Sold individually

• Installation Tip: Replace valve stem seal simultaneously

❓ Frequently Asked Questions

Q1: Does this fit Himalayan 411cc?
✅ Yes—official OEM part for Himalayan 411 variants.

Q2: Compatible with Scram 411 too?
✅ Yes—same engine platform uses this exhaust valve.

Q3: Can I use it on Classic 350 or Bullet 500?
❌ No—different valve dimensions; not compatible.

Q4: Should I also replace inlet valve or seals?
✅ Recommended—replace exhaust stem seal  and inspect inlet valve during head service.

Q5: Is it a genuine part?
✅ Yes—574145/D is OEM-certified and matches factory-spec Royal Enfield part.