Mercruiser 4.3L V6 Vortec Assembled Cylinder 18-4491 – Pair - Part #EQ-CH262NOA
Vortec design 8 bolt intake| Replaces casting # 12557113 & 12557114 – ASSEMBLED. Made from the highest grade cast iron.
EQ assembled heads include:
- 100% New OE type valves, seals, valve springs, and retainers
(OHC assemblies do not include cam & lifters)
All EQ cylinder heads outperform their competitors!
- Thicker deck for greater strength
- Improved design resists cracking
- Superior port finish for increased flow
- Water flow redesigned for greater thermal conductivity
- Hardened exhaust seats
- CNC machined guides and seats
- 25-point quality check on every head
- 3-angle valve finish
- Competitive pricing
Casting / OEM: