Royal Enfield Himalayan 450 Cam Chain Tensioner (Hydro-Mechanical) – RLG00120/D (Replaces RLG00060/A)

If your Royal Enfield Himalayan 450 is developing timing chain noise, inconsistent idle sound, or you’re doing a preventive engine refresh, the RLG00120/D Cam (Timing) Chain Tensioner is the correct genuine replacement tensioner for the H450 (Sherpa 450) platform. This is a hydro-mechanical cam chain tensioner designed to maintain correct chain tension across heat cycles and RPM changes—helping reduce slap/noise, protecting guides, and supporting smoother engine operation.

Dealer microfiche catalogs list this as the new H450 timing chain tensioner and confirm it as a replacement for RLG00060/A. 
Unlike aftermarket options that may have inconsistent spring rates or sealing quality, an OEM-spec tensioner is built for long-term reliability and correct fitment—important on a modern liquid-cooled engine.

Fitment is confirmed for Himalayan 450 only (do not buy for Interceptor/GT 650 or older Himalayan 411). The Himalayan 450 is a BS6 model in India. 

Key Features 

• Genuine Royal Enfield cam/timing chain tensioner (H450)

• Part No: RLG00120/D (often searched as “RLG00120”)

• Hydro-mechanical design for stable cam chain tension

• Listed as H450 “Tendeur chaine dist” in dealer microfiche catalogs 

• Replaces older part: RLG00060/A 

• Helps reduce timing chain rattle / slap (when wear/noise is tensioner-related)

• Direct-fit replacement (no jugaad/alteration when matched to correct model)

• Ideal during timing chain / guide inspection or top-end service

• Supports smoother idle sound consistency (when tension is the root cause)

Compatibility Table (PLEASE CHECK PART NUMBER BEFORE PURCHASE)

Variants

• Single option: RLG00120/D (1 unit)

FAQs 

1. Is RLG00120/D the cam chain tensioner for Himalayan 450?
   Yes. Dealer microfiche catalogs list RLG00120/D as H450 timing chain tensioner (“tendeur chaine dist H450”). 

2. What’s the difference between RLG00120/D and RLG00060/A?
   RLG00120/D is listed as the new/replacement for RLG00060/A. 

3. Will this fit Interceptor 650 / Continental GT 650?
   No. This part is for Himalayan 450 timing chain system. Throttle cable part numbers like 576047/A are unrelated. 

4. Do I need this if my engine is noisy?
   Only if diagnosis points to timing chain tension/guide noise. If unsure, verify with a mechanic and share your VIN for exact confirmation.

5. Is this OEM or aftermarket?
   This part number is listed in genuine dealer catalogs and in Royal Enfield parts references.