Hex Head Rocker Cover Seal Bolt (Rocker Cover Mounting Screw) for Royal Enfield UCE 350/500 & Continental GT 535 – 570129/H (M7x1 x 64)

Royal Enfield 570129/H is the genuine hex head rocker cover mounting screw, commonly called the rocker cover seal bolt. It clamps the rocker/valve cover on UCE engines and is designed to work with the sealing washer system so the top-end stays oil-tight under heat cycles and vibration. If you’re seeing oil seepage from the rocker cover, recurring “wet” engine fins, or a bolt that’s been rounded/over-torqued during valve/tappet work, replacing this fastener is the clean, OEM-correct fix—especially on export bikes and high-mileage UCE motors.

This part is also searched as: “rocker cover bolt”, “tappet cover bolt”, “valve cover seal bolt”, “Rocker cover mounting screw M7”, “570129-H bolt”.

Before you buy: Confirm it’s a UCE engine (not J-Series) and verify thread/length M7x1 x 64 on your old bolt (photo match recommended). The OEM spec is listed as M7x1 x 64 in UCE parts documentation.

Key Features 

• Genuine Royal Enfield part number: 570129/H

• Part type: HEX.HEAD SCREW_ROC_COVER_MTG (Seal Bolt / Rocker Cover Bolt)

• Size/spec: M7 x 1 pitch, 64 mm length (as listed in parts catalogue)

• Helps prevent rocker cover oil seepage when used with the correct sealing washer (washer usually sold separately)

• Correct replacement for listings that show 570129-H / 570129 formats (same base PN format used by sellers)

• Ideal during: tappet/valve service, rocker cover gasket work, top-end reseal, stripped/rounded bolt replacement

• Return-prevention: M7 bolts are uncommon—do not substitute M6/M8 “lookalikes”

• OEM fit and finish for proper torque/clamp behavior vs generic hardware

Compatibility Table

Variants

No variants.

FAQs

1) Fitment: Will this fit all Royal Enfield 350s?
No. It fits UCE 350 engines (older Classic/Bullet/Electra UCE). It is not for J-Series 350 (Reborn/Meteor/Hunter/Bullet J). Use your RC copy/engine type or share a photo of the old bolt for confirmation.

2) Fitment: How do I confirm before ordering?
Match (a) your bike is UCE engine, and (b) your old bolt measures/spec matches M7x1 x 64. A clear photo of the removed bolt + rocker cover area is the fastest verification method.

3) OEM vs aftermarket: Why buy genuine for a simple bolt?
Rocker cover bolts are torque-sensitive and work with sealing washers. OEM maintains correct thread quality, head sizing, and clamp behavior—generic bolts often cause seepage, thread damage, or rounding during service.

4) Installation: Any precautions while fitting?
Install clean threads, start by hand (avoid cross-threading), and torque evenly in sequence with the other rocker cover fasteners. Replace the sealing washer if it’s flattened/hardened to prevent leaks.

5) Symptoms: What issue does this solve?
Commonly fixes: oil seepage at rocker/valve cover, damaged/rounded bolt head from previous service, and poor clamping after repeated heat cycles.

6) Returns-prevention: What should I send to verify if I’m unsure?
Send: (1) bike model + year, (2) engine type confirmation UCE, and (3) close-up photo of the old bolt + length measurement. Without this, wrong orders are common because M7 is uncommon and similar-looking bolts exist.