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Sierra 18-1987-1 Exhaust Manifold Conversion Kit GM V8 Small Block

Original price $1,500.00 - Original price $1,500.00
Original price
$1,500.00
$1,500.00 - $1,500.00
Current price $1,500.00

Sierra 18-1987-1 Exhaust Manifold Conversion Kit GM V8 Small Block

  • GM V8 Small Block Exhaust Manifold Conversion Kit
  • Designed to convert all Mercruiser 305 & 350 cu. in. engines with log style exhaust manifolds and raw water cooling to the newer more efficient center rise manifolds
  • Kit includes (2) center rise exhaust manifolds; (2) exhaust elbows; (1) thermostat housing; (1) thermostat cover; (1) thermostat; and all the hoses; hardware; gaskets and instructions needed to install
  • Not for use on engines with high mounted power steering pumps
  • Replaces Sierra 18-1987

This is a complete exhaust conversion kit for most 1977 to 1982 Mercruiser sterndrive 5.0L (305) and 5.7L (350) engines that came with raw water cooled end rise (log) style manifolds and risers. This kit will convert those exhaust systems to the newer Mercruiser center rise style which is more efficient. This kit includes everything needed including directions. OE Replacement: 77234; 77235; 76351; 60426; 49964 Fits Engines: Mercruiser GM V-8 Small Blocks with end riser (log) style manifolds **NOTE-NOT FOR USE ON ENGINES WITH HIGH MOUNT POWER STEERING PUMPS. NOTE: This Manifold Kit is designed to convert all Mercruiser Stern Drive Engines with GM 305 & 350 CID Blocks thathave Log Style Exhaust Manifolds and Raw Water Cooling to the Newer More Efficient Center Rise Manifolds.Kit includes: (2) center rise manifolds; (2) exhaust elbows; (1) thermostat housing; 1 thermostat cover; (1) thermostat; all hoses; hardware; gaskets plus complete instructions to do the job right. This manifold kit is designed to convert all Mercruiser stern drive engines with GM 305 & 350 CID blocks that have log style exhaust manifolds and raw water cooling to the newer more efficient center rise manifolds. This Manifold Kit is designed to convert all Mercruiser Stern Drive Engines with GM 305 & 350 CID Blocks that have Log Style Exhaust Manifolds and Raw Water Cooling to the Newer More Efficient Center Rise Manifolds