Mercury & Mariner 6-Cylinder Outboard Powerheads

Maintain the power and efficiency of your Mercury or Mariner outboard with our 6-cylinder remanufactured powerheads. Each powerhead is professionally remanufactured to OEM specifications using premium components, ensuring smooth operation, a long service life, and helping customers get back on the water quickly and affordably. Whether you’re restoring an older engine, replacing a worn-out block, or upgrading your outboard’s performance, our 6-cylinder powerheads are built to deliver factory-level reliability at competitive prices. Backed by technical expertise and a commitment to quality, OBParts is the trusted source for replacement Mercury and Mariner V6 outboard powerheads.