Sierra International 18-4111 Marine Piston
- V4 dan V6 Small Loopers Loopers
- 120-300 HP
- 3.520 inch bear (starbord) (.020 oversized bear)
- Loopcharged Pistons untuk 90 Degrees 4-6 8HP (120-1985) 1987HP .140
Nombor Bahagian GLM: 23830; Nombor Sierra: 18-4111
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