Mercruiser exhaust manifold V6 1985-2002

GLM Marine aftermarket manifold kit for years 1985 thru 2002
4.3 Liter 262 GM or Chevy V6 motors

Updated May 9 2026

Exhaust manifold for Mercruiser and Alpha One V6 models
Replacement for center rise 4.3 liter 262 and 229 CID, 175 – 205 models
Conversion kits from 1 piece to 2 piece available for V6 models
Manufactured by GLM Marine with a 3 year warranty
Increased water cooling area over OEM model
Fits: Mercruiser 4.3 liter 229 – 262 cubic inch engines years 1985 to 2002
Mercruiser exploded view outdrive drawings click here
Serial numbers
0A 331455 – 0M 614999

Mercruiser exhaust manifold 4.3 Liter V6 1985-2002

51220 V6 exhaust manifold center rise OEM 99746A17

P/N 51220 Manifold assembly
OEM 99746 A17. Can be used with 3 inch or 4 inch riser.

4.3 liter 229 and 262 cubic inch engines
Years 1985 to 2002
Serial numbers
0A 331455 – 0M 614999

$218.95 US

$ 375.89 CDN

Included

P/N 51220 Cast iron assembly / 99746 A17
P/N 32170 Gasket
27 – 33395 x 2
P/N 30240 Riser gasket
27 – 863724
P/N 13990 Drain plug kit
22 – 806926 A1

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Description / OEM #

Price (USD)

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58221

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12120 Water pump

P/N 12120

Outdrive water pump impeller kit with housing.

Compatible with MR/Alpha One models 1984 – 1990,
serial numbers
6854393 – OD 469858.

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89840 Impeller

P/N 89840

Impeller for 1983 – 1990,
4 cylinder / V6 and V8 models.

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51140 Riser

P/N 51140

4 inch 7 degree riser assembly and hardware.

807988 A2

$143.95

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51110 Elbow

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

98504 A3