HPI Savage 21 13-Fin Engine Heat Sink Aluminium SAV1815 by GPM  [SAV1815]

13-fin alloy cooler for Savage 21 heads

This 13-fin alloy head sink is produced to match model SAV1815 and fits HPI Savage 21 cylinder heads. The added fins increase exposed surface area so heat is dispersed more evenly under prolonged load.

Designed specifically for HPI Savage 21 fitment, confirm head profile and mounting points before ordering. The unit is supplied as one set and installs externally without altering internal engine parts.

Fitting advice: verify clearance with body panels and adjacent components, line up the heat sink with existing head fixing points, and secure fasteners with correct engagement. Maintain routine engine checks and keep an eye on head temperatures during initial runs to confirm expected cooling behavior.

Use this 13-fin aluminium head sink as a direct aftermarket replacement to improve passive head cooling for compatible Savage 21 engines, and double-check mechanical clearance before extended use.