Mercruiser Alpha One Parts and Repairs

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Mercruiser Manifold & Riser 4" Kit V8 GM 1985-2002

GLM Marine aftermarket manifold and riser kit 4 inch for V8 GM engines years 1983 and up

  • For 5.0L, 5.7L GM/Chevy 200, 228, 230, 898 and 260 models with 305/350
  • Kit includes screws, gaskets for installation (GLM 31100 and 30270)
  • Center rise exhaust manifold and elbow. Not compatible with 'log style'.
  • 30% more water flow area than the original OEM version
  • 3 year GLM Marine warranty

51230-51140 Exhaust manifold kit V8 350 305

51230-51140 Exhaust manifold kit V8 350-305

P/N 51230-51140 Exhaust assembly kit
Replaces 860246A10 and 98504A3

$333.95 US

$442.95 CDN

Included
P/N 51230 Manifold / 860246A10
P/N 51140 Riser / elbow assembly / 98504A3
P/N 31100 Mounting gasket / 27-33395
P/N 22381 Steel screws / 10-43749 x 4
P/N 30240 Riser gasket / 27-863724
P/N 13990 Drain plug with o-ring / 22-806926A1
P/N 21891 Plug 3/4-14 (Steel) / 22-41622

Customers who purchased P/N 51230-51140 also looked at:

Photo

Description / OEM #

Price (USD)

Price (Canadian)

51230 Manifold assembly 260

51230

P/N 51230 Port or starboard GM/Chevy V8 exhaust assembly with gasket.

860246Q11

$190.95

$251.95

89120

89120

P/N 89120 Upper bellow for 4 inch riser P/N 51140. Does not work with P/N 51110.

32-44348T

$34.95

$45.95

58232

58232

P/N 58232 Complete V8 port and starboard kit including gaskets, screws and drain plugs. For 5.0L 305 and 5.7L 350 GM/Chevy motors, center rise style.

Includes
P/N 51230 Assembly / 860246Q11 x 2
P/N 51140 Elbow (4 inch) / 807988A2 x 2
P/N 31100 Gasket / 27-33395 x 2
P/N 30240 Gasket / 27-863724 x 2
P/N 13991 90 degree hose fitting / 22-806926 x 2 P
/N 13992 Drain plug / 22-806608A02 x 2
P/N 80140 O-ring for plug / 25-45253 x 2
P/N 22381 Stud / 10-43749 x 8

$598.95

$790.95

89130-89120

89130-89120

P/N 89130-89120 Upper bellow and lower bellow set for 4 inch riser.

32-14358001-32-44348T

$59.95

$78.95

15201 Engine circulating water pump

15201 Water pump

P/N 15201 Circulating water pump for 5.0L 305, 5.7L 350 small block motors. Fits both metal composite timing chain cover

850399-1

 
Features include
Stainless Steel Backing Plate
Stainless Steel
Machined Brass Impeller
Bi-Directional & Balanced
Seal Cup & Spring

$96.95

$127.95

31100-30240 Gasket set

31100-30240

P/N 30240-31100 Installation gasket set. P/N 30240 x 2 and 31100 x 2 included.

$21.95

$28.95