Mercruiser Alpha One Parts and Repairs

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Mercruiser Exhaust Manifold 5.0-5.7L V8 1983-2002

5.0L / 5.7L 260 manifold assembly with gaskets for GM motors

  • Manufactured by GLM Marine with a 3 year warranty
  • Increased water cooling area over OEM model
  • Port or Starboard
  • Fits MCM / MIE GM V-8 (305, 350 & 377 cid) engines
  • Years 1983 to 2002

51230 Mercruiser exhaust riser OEM 860246Q11

51230 Mercruiser exhaust riser OEM 860246Q11

P/N 51230 Manifold assembly - OEM 860246A10. Can be used with 3 inch or 4 inch riser.

$190.95 US

$251.95 CDN

Included
P/N 51230 Cast iron assembly / 860246A10
P/N 31100 Gasket / 27-33395
P/N 30240 Riser gasket / 27-863724

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Description / OEM #

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58232 GLM manifold kit

58232 GLM

P/N 58232 Complete V8 manifold and 4" riser set with hardware and gaskets. For port and starboard.

$599.95

$791.95

31100-30240 Gasket set

31100-30240

P/N 31100-30240 Gasket set. 1 manifold gasket and 1 riser gasket.

$9.95

$12.95

12120 Water pump

12120 Water pump

P/N 12120 Outdrive water pump impeller kit with housing. Compatible with MR/Alpha One models 1984 - 1990, serial numbers 6854393-OD469858.

$35.95

$46.95

89120 Upper hose

89120

P/N 89120 Upper bellow for 3 inch and 4 inch riser (P/N 51110 or 51140 shown below).

32-44348T

$34.95

$45.95

51110 Elbow

51110 Elbow

P/N 51110 3 inch 15 degree elbow assembly with studs and gasket.

98504A3

$147.95

$194.95