Exhaust Manifold - for Mercruiser Big Block 7.4L - V8 Models 330, 340 and 454 MAGNUM - Replaces MerCruiser 7.4L part # 89011A8 - XL89011:
Inboard and Stern-Drive Units
CENTER RISER DIRECT REPLACEMENT
- Direct replacement water cooled exhaust manifold.
- Replaces MerCruiser part # 89011A8.
- Mercruiser direct replacement Big Block 7.4-Liter (454 cu.in.) and 8.2-Liter (502 cu.in.)
- Exhaust Manifold, Replaces Mercury 89011A8, 807078T08, Mallory Marine 9-40506, Sierra 18-1957-1, Osco 9011A, HGE 9011, GLM 51240.
- 3-year limited warranty.
- Material: Cast Iron
IN THE BOX
- Exhaust Manifold
- Head Gasket
- Gasket
- Mounting Hardware