Rocker Cover Bolt Seal Washer – Royal Enfield 570128/F

NOW SOLD AS A SET OF 5 PCS FROM 21ST APRIL 2026 

The 570128/F Seal Washer Washer Seal (Rocker Cover) is an authentic Royal Enfield part that ensures a reliable oil-tight seal around the rocker (valve) cover bolts on UCE engines. Crafted from premium crush-resistant material, this washer prevents oil seepage in the cylinder head assembly and maintains correct valve cover torque settings. A factory-installed component, now available for seamless engine servicing or restoration.

🔍 Key Features:

• OEM Part Number: 570128/F

• Specifically designed for rocker cover bolt sealing

• Made from oil-resistant, crushable composite for tight seal

• Withstands high engine temperatures and vibration

• Genuine OEM quality, identical to factory spec 

✅ Compatibility:

Fits Royal Enfield UCE and pre-BS6 models, including:

• Bullet 350/500 (UCE/KS/ES)

• Classic 350/500 (EFI & carbureted)

• Electra 350 UCE

• Thunderbird 350/500 Series

• Classic 500 EFI

• (Also can be found in gasket repair kits for these engines) 

⚠️ Not compatible with Reborn/Meteor/J-series engine models.

📦 Package Includes:

• 1 x Seal Washer (Part No. 570128/F)

❓ FAQ:

Q1: What does this washer do?
✅ It seals the rocker (valve) cover bolt to prevent oil seepage, crucial for maintaining engine integrity.

Q2: Which models use this part?
✅ Fits UCE engines found in Bullet 350/500, Classic 350/500, Electra, Thunderbird 350/500, and Classic 500 EFI. 

Q3: Is this a genuine Royal Enfield part?
✅ Yes — 570128/F is OEM and matches factory specifications for sealing performance.

Q4: Should I replace it during servicing?
💡 Yes. Washers are form-fit parts and should be replaced whenever the head cover is removed to ensure proper seal and torque.