HPI Savage 21 Precision Alloy Head Heat Sink 13 fins SAV1815 by GPM  [SAV1815]

Precision alloy head sink for Savage 21

This 13-fin aluminium head sink aligns with model SAV1815 and is intended for HPI Savage 21 cylinder head applications. The fin geometry increases exposed area to improve passive thermal transfer from the head to ambient air without modifying internal engine components.

Intended compatibility is with HPI Savage 21 cylinder heads; verify head mounting points and envelope clearance before purchase. The component is supplied as a single set designed to mount externally to the head profile and retain original engine internals unchanged.

Installation guidance for workshop use: confirm body and component clearances, ensure datum alignment with existing head fixings, and engage fasteners with appropriate thread engagement and seating. Continue routine engine maintenance and perform monitored test runs to validate head temperature behavior under load.

Use this 13-fin aluminium head sink as an aftermarket replacement to improve passive head cooling on compatible Savage 21 engines, and confirm mechanical clearance and alignment prior to extended use.